What this report is
This is the Atlanta Regional Commission's (ARC) CBI regional congestion report: an automated, data-driven analysis of recurring traffic congestion across Interstates, Arterials in ARC's 21-county metro Atlanta planning area. It is built directly from 5-minute interval probe vehicle speed data, not survey or anecdotal input — every number in the other tabs traces back to the record counts below.
This report is not the official FHWA CBI Tool software and should not be represented as such — it is an independent, custom-built implementation of the published CBI methodology, adapted and altered by ARC for the Atlanta region's specific corridor network, data sources, and reporting needs. Per the CBI Tool Software License Agreement, this adaptation is plainly identified here as an altered version of the FHWA CBI concept, not a redistribution of the original software, and FHWA / the U.S. Government do not endorse this implementation. For the full technical write-up, see the CBI Technical Report document.
Data source
NPMRDS (National Performance Management Research Data Set) from INRIX,
covering passenger vehicles and trucks. Scope: the 21 counties in ARC's Atlanta region
planning area, 17,388 TMC (Traffic Message Channel) road segments, weekdays only
(Monday–Friday — no weekend data exists in the source, which is why weekday and
hourly breakdowns in this report never include Saturday/Sunday) from January 1
through December 31, 2025. Source probe fields: speed, historical average speed,
reference (free-flow) speed, travel time, and data density; volume/AADT figures are
from NPMRDS2 2025. Road functional classification (Interstate / Expressway / Arterial
/ Collector / Local) follows the FHWA f_system code carried in the TMC
metadata.
Methodology, in brief
For each analyzed corridor, every day's speed readings are scanned for periods where traffic drops below 70% of free-flow reference speed. Recurring patterns across the year are grouped into discrete recurring bottlenecks — specific locations that congest on a predictable basis — and ranked by a severity index combining how often they occur, how large a queue they produce, and how much speed drops. A small number of corridors — typically beltways like I-285, where congestion runs fairly uniformly along a long stretch rather than concentrating at one point — fall back to a segment-by-segment occurrence profile instead of a single ranked list when no one location stands out enough to qualify as a discrete peak.
In practice, this means an Arterial's occurrence percentage should be read as "how often this location sees sustained slow travel, including routine signal/stop-sign operation" rather than "how often something is abnormally wrong" the way it can be read on a freeway. The ranking within Arterials is still meaningful for comparing locations against each other, and the peak hour/day patterns still point at real commute-driven congestion layered on top of that baseline — but absolute occurrence numbers are not directly comparable between Arterials and Interstates/Expressways, and a 95–100% Arterial occurrence figure does not mean that location is congested nearly as severely as a 95–100% Interstate figure would. This is a known, general limitation of applying freeway-oriented bottleneck detection to signalized roads, not specific to this implementation — field verification (signal timing plans, turning movement counts) is recommended before acting on any single Arterial location in isolation.
Because this effect is strongest on rural, lower-lane-count Arterials — fewer through lanes concentrate traffic through the same signals and stop signs that inflate the occurrence baseline — Arterial corridors with any rural segment are excluded from the region-wide Top Bottlenecks ranking shown elsewhere in this report, so they don't outrank genuinely severe freeway interchange bottlenecks on a metric that isn't directly comparable. Their own bottlenecks are still fully analyzed and reported in each corridor's own section and Word report — only their participation in the network-wide ranking is affected.
That corridor-level rule catches rural Arterials, but the same underlying mechanism — a flat, non-time-varying reference speed that misreads ordinary signal-cycle or short ramp-segment noise as congestion — also shows up on individual bottlenecks located on otherwise fully-urban Arterial corridors. A second, more direct check now runs per-bottleneck: any Arterial-group bottleneck where at least 15% of overnight (12 AM–4 AM) readings are still flagged "congested" — when there is essentially no traffic to cause a real queue — is excluded from the ranking and from the region map's bottleneck layer individually, regardless of which corridor it's on. Two other proxies were tried and rejected before this: a bottleneck's extent spanning its entire corridor (rejected — flagged genuine short interchange-approach bottlenecks, e.g. Camp Creek Pkwy at I-285) and low AADT as a stand-in for sparse, unreliable sampling (rejected — tested directly against each reading's data-density classification, and the two run in the opposite direction from what that theory predicts). The overnight-reading test is the one signal confirmed to track the actual mechanism directly.
Corridor eligibility is checked before ranking: a road must have road_miles ≥ 0.5 AND (road_miles ≥ 1.0 OR at least 4 supporting TMCs) to be ranked at all — a road that is both very short and thinly supported is excluded outright, since its density figure divides by a near-zero denominator and is not a meaningfully comparable "corridor" measurement (confirmed directly: GA-205, 0.54 mi on just 2 TMCs with 82.6% of its own delay concentrated in one of them, fails this test; GA-11, 8.06 mi on 15 TMCs, passes). Every eligible road's own worst TMC is separately checked: max TMC share of delay = maxi(EAVHDi) ÷ EAVHDtotal — a road can pass eligibility and still have most of its delay concentrated in one segment (flagged, not excluded, in the ranked table) rather than spread across the corridor. Recurrence and speed reduction are LENGTH-WEIGHTED averages across a road's segments (not a plain mean), so a handful of short TMC fragments don't carry the same influence as long ones. Recurrence itself is measured from each day's worst PEAK-HOUR AVERAGE speed, not its worst single 5-minute reading — an earlier version of this calculation checked any 5-minute dip within the peak window, which inflated recurrence toward saturation across nearly every segment; anchoring to the hourly average fixed that.
On "Estimated": this database has no observed hourly traffic volume — only AADT (an annual daily average per segment). The primary hourly distribution factor (HDF) is a real, published, count-station-derived curve (Delaware DOT Traffic Monitoring Program, "Hourly Distribution of AADT for Traffic Groups," Average Weekday Traffic, 2002 — averaged across that source's 7 populated traffic-pattern groups, since its group-to-facility-type legend was not available to confirm which column is specifically "urban arterial"), not a fabricated one, but it is still the least-defensible input to EAVHD and the first thing to replace with real GDOT continuous-count-station hourly profiles once available. To test how much that assumption actually matters, EAVHD density was recomputed under 3 alternate plausible hourly-distribution scenarios (a flatter real curve, a uniform 1/24-per-hour baseline, and a synthetic AM+PM commuter double-peak) and compared to the primary ranking — Spearman's ρ came back in the 0.995–0.999 range with 19–20 of the same 20 roads staying in the top 20 regardless of scenario, demonstrating the ranking is stable under alternative reasonable hourly distributions rather than an artifact of exactly which curve was chosen (see the Top Arterials tab for the live numbers). A Congestion Pattern (COP) diagnostic column also classifies each road by the SHAPE of its own INRIX-observed congestion — deliberately NOT called a Traffic Pattern Group, since that term already means a volume/count concept in traffic engineering, and speed shape cannot be reliably converted into a traffic-volume distribution — shown for context only, and does not affect ranking or select a different HDF curve per road. The prior severity_index-based scoring for this ranking is kept in the table only as an experimental comparison column, slated for removal once EAVHDdensity is fully validated. For the full technical write-up, see the Intersection Congestion Ranking document.
How this helps ARC
Data structure and scope of this report
Records "read" are the full regional dataset queried; records "analyzed" are the subset that fed into the corridors, segments, and events shown in this report.
| Road segments in the source network (TMC records) | 17,388 |
| Speed observations read region-wide (5-minute probe records) | 495,984,761 (2025-01-01 – 2025-12-31) |
| Speed observations analyzed for this report | 195,778,524 |
| Corridors analyzed (full pipeline) | 92 (16 Interstate, 26 Expressway, 50 Arterial) |
| Corridor segments analyzed | 2,806 |
| Congestion events detected | 727,547 |
| Recurring bottlenecks identified | 220 |
| Daily bottleneck characterization records | 77,908 |
| Analysis period | 2025-01-01 to 2025-12-31 (365 analyzed days) |
Each bar sums every detected congestion event's mile-hours (one mile of roadway congested for one hour, added up across every event) for that calendar month, across all analyzed Interstate and Arterial corridors.
Same mile-hours total, grouped by day of week across the full analysis period. This is a total, not a per-day average, so a period with more Fridays than Mondays will naturally weight Friday higher.
Each event is sliced into the calendar hours it actually overlaps, with its mile-hours split proportionally to how many minutes fall in each hour, then summed by hour of day — this avoids crediting an entire multi-hour event (e.g. a 7-hour overnight incident) to just its start hour.
Same mile-hours total, attributed to the county of each event's upstream (first) segment. Only Interstate and Arterial corridors are analyzed, so this reflects the network studied here, not each county's full roadway congestion.
Average probe speed by hour of day, region-wide — one line per FHWA functional road class (Interstate/Expressway/Arterial/Collector/Local, by each TMC's own direct functional classification, not inferred) plus the overall system-wide average. Unlike the four charts above, this measures raw speed, not mile-hours of congestion, so it shows WHEN each road class slows down and by how much, rather than how much total congestion accumulated. The Arterial curve's highest-speed hour and lowest-speed hour set the free-flow/peak-hour reference used by the Intersection Congestion Severity page's methodology.
Highest Regional Congestion Day
The single calendar date with the highest total region-wide congestion (event mile-hours) of the analysis period — a different, more specific question than the "Worst Day of Week" KPI above, which averages across every date sharing that weekday.
Same proportional-overlap hourly slicing as the Congestion by Hour of Day chart above, but scoped to just this one date rather than summed across the whole year — shows how this specific day's congestion built up and cleared.
Every ranking-eligible bottleneck that actually occurred on this date, colored on the same region-wide AADT-weighted severity scale as the Regional Map tab.
Reading this map
Colored, full-width sections are the exact extent of a detected recurring bottleneck — not the whole corridor — colored by AADT-weighted severity (see the Metadata tab for why traffic volume factors in). Two directions of the same physical road (e.g. I-285 Clockwise / Counterclockwise) are drawn with a small fixed sideways offset so they render as two distinct parallel lines instead of overlapping into one.
Color follows the same orange-to-dark-red language most map apps use for heavy traffic, so it reads at a glance without needing the legend: light orange is the least severe of these bottlenecks (still a real, confirmed recurring one — not "fine"), dark maroon the most. The 5 color classes are K-means clustered on this run's actual severity distribution rather than a fixed scale, so the breaks reflect real gaps in how severe this region's bottlenecks are, not an arbitrary percentage.
Bottlenecks confirmed as false-flagged by the overnight-congestion diagnostic (a flat reference speed misreading signal-cycle or ramp-geometry noise as congestion) are excluded from this layer entirely, not just deprioritized — see the Metadata tab.
A corridor with no colored sections either has none of its congestion concentrated at a discrete, repeatable location, or falls back to a segment-by-segment profile instead (see that corridor's own section in the Corridors tab).
The Corridors tab's severity index is a different, more complete score than plain occurrence: it multiplies occurrence rate by annual queue mile-hours and by how much speed drops, then scales by traffic volume (AADT) — that AADT-weighted figure is exactly what's clustered here for the bottleneck layer's color.
Road Class (line thickness)
Bottleneck Severity
(Google Maps-style traffic colors)
Every recurring bottleneck identified across all 134 analyzed corridors, ranked region-wide by AADT-weighted severity (traffic-independent severity index — occurrence × annual queue mile-hours × speed drop — scaled by peak-segment traffic volume relative to the region's typical bottleneck; see the Metadata tab for the full methodology and why volume weighting was added). The top 10 are highlighted below and in the full list. Downtown Connector Northbound and Southbound each appear as a single row here despite spanning many named exits — for more detail on their individual exit-by-exit congestion, see the Corridors section. Click a card below to open that corridor in the Corridors tab, and hover over a table column heading to see its definition.
Full Regional Ranking (134 bottlenecks)
| Rank | Corridor | Location | Class | County | CID | AADT | Occurrence % | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity (Traffic-Independent) | Severity (AADT-Weighted) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Downtown Connector Northbound | EDGEWOOD AVE/NB EXIT 248B | Interstate | FULTON | - | 356016 | 99.70% | 04:00 PM | Friday | 16,112.79 | 0.37 | 10,104.54 | 35,973.78 |
| 2 | Downtown Connector Southbound | MARTIN LUTHER KING DR/SB EXIT 248A | Interstate | FULTON | - | 371000 | 100.00% | 04:00 PM | Friday | 12,617.94 | 0.45 | 6,990.34 | 25,934.16 |
| 3 | I-75 Southbound | WINDY HILL RD/EXIT 260 | Interstate | COBB | Cumberland CID | 325000 | 99.50% | 01:00 PM | Thursday | 11,008.26 | 0.47 | 5,827.11 | 18,938.12 |
| 4 | I-85 Northbound | GA-140/JIMMY CARTER BLVD/EXIT 99 | Interstate | GWINNETT | Gateway85 Gwinnett CID | 299179 | 99.20% | 03:00 PM | Friday | 9,938.33 | 0.44 | 5,520.94 | 16,517.50 |
| 5 | I-85 Southbound | I-75 & I-85 JUNCTION/EXIT 85 | Interstate | FULTON | - | 243000 | 99.70% | 03:00 PM | Thursday | 9,939.87 | 0.41 | 5,896.48 | 14,328.45 |
| 6 | I-85 Southbound | PLEASANTDALE RD/EXIT 96 | Interstate | DEKALB | - | 296000 | 99.20% | 01:00 PM | Friday | 9,787.10 | 0.50 | 4,815.57 | 14,254.08 |
| 7 | I-20 Eastbound | I-285/EXIT 10B | Interstate | FULTON | - | 185000 | 100.00% | 12:00 PM | Thursday | 12,895.24 | 0.48 | 6,757.11 | 12,500.65 |
| 8 | I-75 Southbound | HUDSON BRIDGE RD/EXIT 224 | Interstate | HENRY | - | 173888 | 99.50% | 12:00 PM | Friday | 11,189.92 | 0.40 | 6,680.38 | 11,616.38 |
| 9 | I-285 Counterclockwise | NORTHSIDE DR/EXIT 22 | Interstate | FULTON | - | 211082 | 96.20% | 04:00 PM | Friday | 8,990.34 | 0.42 | 5,016.25 | 10,588.40 |
| 10 | I-20 Westbound | WESLEY CHAPEL RD/EXIT 68 | Interstate | DEKALB | East Metro Dekalb CID | 161000 | 99.20% | 07:00 AM | Friday | 12,277.16 | 0.46 | 6,540.09 | 10,529.55 |
| 11 | I-285 Clockwise | PACES FERRY RD/EXIT 18 | Interstate | COBB | Cumberland CID | 183006 | 98.40% | 04:00 PM | Thursday | 10,573.07 | 0.50 | 5,222.76 | 9,557.96 |
| 12 | I-75 Northbound | JODECO RD/EXIT 222 | Interstate | HENRY | - | 165000 | 96.20% | 04:00 PM | Friday | 10,225.16 | 0.42 | 5,685.56 | 9,381.17 |
| 13 | I-75 Southbound | I-75 & I-85 JUNCTION | Interstate | FULTON | - | 201000 | 99.70% | 03:00 PM | Thursday | 6,749.94 | 0.36 | 4,313.73 | 8,670.60 |
| 14 | I-285 Counterclockwise | US-78/US-278/EXIT 12 | Interstate | FULTON | - | 163173 | 98.90% | 04:00 PM | Thursday | 9,367.10 | 0.44 | 5,215.67 | 8,510.56 |
| 15 | I-285 Clockwise | I-85/EXIT 33 | Interstate | DEKALB | - | 219000 | 99.50% | 03:00 PM | Thursday | 7,026.79 | 0.45 | 3,873.38 | 8,482.70 |
| 16 | I-285 Counterclockwise | NORTHLAKE MALL/EXIT 36 | Interstate | DEKALB | Tucker-Northlake CID | 200000 | 98.90% | 07:00 AM | Wednesday | 7,597.43 | 0.52 | 3,614.17 | 7,228.33 |
| 17 | I-285 Counterclockwise | I-20/EXIT 46 | Interstate | DEKALB | - | 144000 | 99.50% | 04:00 PM | Thursday | 8,351.05 | 0.43 | 4,719.68 | 6,796.34 |
| 18 | I-75 Northbound | BARRETT PKWY/EXIT 269 | Interstate | COBB | Town Center Area CID | 145729 | 97.30% | 05:00 PM | Thursday | 7,502.57 | 0.44 | 4,080.70 | 5,946.76 |
| 19 | I-20 Eastbound | PANOLA RD/EXIT 71 | Interstate | DEKALB | East Metro Dekalb CID | 152429 | 97.80% | 04:00 PM | Friday | 6,742.24 | 0.44 | 3,712.37 | 5,658.73 |
| 20 | GA-13 Northbound (GA-42/N DRUID HILLS RD NE to US-23/GA-155/CLAIRMONT TER) | LENOX RD NE | Arterial | FULTON | - | 88400 | 100.00% | 04:00 PM | Wednesday | 10,795.34 | 0.45 | 5,959.03 | 5,267.78 |
| 21 | I-20 Westbound | CAPITOL AVE/EXIT 248D | Interstate | FULTON | - | 231000 | 100.00% | 08:00 AM | Friday | 4,313.84 | 0.49 | 2,208.69 | 5,102.06 |
| 22 | US-19 Southbound (MORROW INDUSTRIAL BLVD to GA-92/OLD ATLANTA RD) | FLINT RIVER RD | Arterial | CLAYTON | - | 54500 | 100.00% | 01:00 PM | Thursday | 17,855.52 | 0.48 | 9,284.87 | 5,060.25 |
| 23 | I-285 Clockwise | GA-139/MARTIN LUTHER KING DR/EXIT 9 | Interstate | FULTON | - | 151000 | 94.00% | 04:00 PM | Thursday | 6,278.75 | 0.46 | 3,163.49 | 4,776.86 |
| 24 | US-19 Northbound (SMITH ST to I-75/EXIT 235) | GA-3/MAIN ST | Arterial | CLAYTON | - | 48000 | 100.00% | 12:00 PM | Saturday | 19,211.75 | 0.51 | 9,432.97 | 4,527.83 |
| 25 | I-20 Westbound | GA-70/FULTON INDUSTRIAL BLVD/EXIT 49 | Interstate | FULTON | - | 185000 | 99.50% | 04:00 PM | Friday | 4,491.35 | 0.50 | 2,252.32 | 4,166.80 |
| 26 | I-285 Counterclockwise | GA-141/EXIT 31 | Interstate | DEKALB | - | 227584 | 98.60% | 08:00 AM | Tuesday | 3,582.09 | 0.49 | 1,783.63 | 4,059.26 |
| 27 | GA-13 Southbound (SIDNEY MARCUS BLVD to US-19/GA-9/W PEACHTREE ST NW) | I-85/GA-403/NORTHROPE DR | Expressway | FULTON | - | 88400 | 100.00% | 04:00 PM | Thursday | 7,446.93 | 0.39 | 4,535.18 | 4,009.10 |
| 28 | I-85 Northbound | GA-317/EXIT 111 | Interstate | GWINNETT | - | 170880 | 95.60% | 04:00 PM | Friday | 4,418.95 | 0.45 | 2,310.81 | 3,948.71 |
| 29 | US-78 Westbound (NEW HOPE CHURCH RD to ROCKBRIDGE RD/PARK PLACE BLVD) | HIGHPOINT RD | Arterial | GWINNETT | Evermore CID | 45107 | 100.00% | 05:00 PM | Friday | 17,126.61 | 0.50 | 8,546.18 | 3,854.92 |
| 30 | US-78 Eastbound (PARK PLACE BLVD to CHEEK RD) | GA-124/SCENIC HWY | Arterial | GWINNETT | Evermore CID | 45100 | 100.00% | 01:00 PM | Wednesday | 17,098.83 | 0.51 | 8,446.82 | 3,809.52 |
| 31 | I-75 Southbound | GA-85/EXIT 237 | Interstate | CLAYTON | Airport South CID | 223000 | 95.10% | 04:00 PM | Friday | 3,299.51 | 0.47 | 1,672.47 | 3,729.60 |
| 32 | I-75 Southbound | CHASTAIN RD/EXIT 271 | Interstate | COBB | Town Center Area CID | 137484 | 100.00% | 02:00 PM | Friday | 4,852.93 | 0.52 | 2,353.67 | 3,235.92 |
| 33 | SUGARLOAF PKWY Northbound (DAVIS RD to OLD PEACHTREE RD) | GA-316 | Arterial | GWINNETT | - | 35300 | 100.00% | 03:00 PM | Wednesday | 16,848.49 | 0.47 | 8,862.31 | 3,128.39 |
| 34 | GA-316 Westbound (US-29/GA-8/WINDER HWY to GA-20/GA-124/BUFORD DR) | CEDARS RD | Arterial | GWINNETT | - | 49600 | 100.00% | 05:00 PM | Tuesday | 12,148.68 | 0.49 | 6,244.42 | 3,097.23 |
| 35 | SUGARLOAF PKWY Southbound (OLD PEACHTREE RD to GA-20/LOGANVILLE HWY) | GA-316 | Arterial | GWINNETT | - | 34105 | 100.00% | 05:00 PM | Tuesday | 16,666.98 | 0.49 | 8,566.83 | 2,921.72 |
| 36 | GA-400 Southbound | I-85/EXIT 87 | Expressway | FULTON | - | 83800 | 99.70% | 04:00 PM | Thursday | 6,070.64 | 0.44 | 3,383.31 | 2,835.21 |
| 37 | GA-141 Northbound (SPALDING DR to US-19/GA-400) | STATE BRIDGE RD | Arterial | FULTON | - | 45970 | 100.00% | 04:00 PM | Wednesday | 11,344.32 | 0.46 | 6,080.56 | 2,795.23 |
| 38 | GA-5-CONN Southbound | I-75 | Arterial | COBB | Town Center Area CID | 45140 | 100.00% | 03:00 PM | Friday | 10,806.01 | 0.43 | 6,127.01 | 2,765.73 |
| 39 | US-19 Southbound (GA-369/BROWNS BRIDGE RD to I-285/EXIT 4) | GA-140/HOLCOMB BRIDGE RD/EXIT 7 | Expressway | FULTON | - | 163216 | 76.70% | 07:00 AM | Wednesday | 3,869.75 | 0.43 | 1,688.85 | 2,756.47 |
| 40 | GA-141 Northbound (SPALDING DR to US-19/GA-400) | SHARON RD | Arterial | FORSYTH | - | 41800 | 100.00% | 02:00 PM | Wednesday | 12,182.95 | 0.46 | 6,554.43 | 2,739.75 |
| 41 | US-19 Southbound (GA-81/UPPER WOOLSEY RD to GA-369/BROWNS BRIDGE RD) | JOT EM DOWN RD | Arterial | DAWSON | - | 37111 | 100.00% | 04:00 PM | Friday | 14,093.39 | 0.49 | 7,244.00 | 2,688.32 |
| 42 | I-20 Eastbound | WINDSOR ST | Interstate | FULTON | - | 192038 | 100.00% | 05:00 PM | Wednesday | 2,988.34 | 0.53 | 1,392.57 | 2,674.26 |
| 43 | I-85 Northbound | I-75 | Interstate | FULTON | - | 125000 | 99.70% | 03:00 PM | Friday | 4,401.73 | 0.52 | 2,119.66 | 2,649.57 |
| 44 | GA-5-CONN Northbound | I-75 | Arterial | COBB | - | 46582 | 100.00% | 01:00 PM | Friday | 10,246.12 | 0.45 | 5,655.86 | 2,634.61 |
| 45 | I-575 Northbound | GA-92/EXIT 7 | Interstate | CHEROKEE | - | 99772 | 99.20% | 05:00 PM | Friday | 5,155.03 | 0.49 | 2,587.58 | 2,581.68 |
| 46 | GA-316 Eastbound (CEDARS RD to US-29/GA-8/WINDER HWY) | CEDARS RD | Arterial | GWINNETT | - | 49600 | 100.00% | 05:00 PM | Friday | 9,975.49 | 0.50 | 5,007.70 | 2,483.82 |
| 47 | GA-141 Southbound (PEACHTREE CORNERS CIR to HOLCOMB BRIDGE RD) | MCGINNIS FERRY RD (SUWANEE) | Arterial | FORSYTH | - | 44000 | 100.00% | 12:00 PM | Wednesday | 10,473.09 | 0.48 | 5,446.01 | 2,396.24 |
| 48 | GA-141 Southbound (CHAMBLEE DUNWOODY RD to GA-9/ROSWELL RD/W PACES FERRY RD NW) | DRESDEN DR | Arterial | DEKALB | - | 29903 | 100.00% | 01:00 PM | Wednesday | 15,204.12 | 0.48 | 7,890.94 | 2,359.63 |
| 49 | I-285 Clockwise | GA-139/RIVERDALE RD/EXIT 60 | Interstate | CLAYTON | Airport South CID | 188114 | 97.00% | 04:00 PM | Friday | 2,662.88 | 0.52 | 1,242.42 | 2,337.17 |
| 50 | US-19 Northbound (MARTIN RD to JOHN D REEVES RD) | GA-318/DAWSON FOREST RD | Arterial | DAWSON | - | 37100 | 100.00% | 12:00 PM | Friday | 12,250.27 | 0.50 | 6,088.38 | 2,258.79 |
| 51 | US-78 Westbound (NEW HOPE CHURCH RD to ROCKBRIDGE RD/PARK PLACE BLVD) | GA-20/MAIN ST/CONYERS RD | Arterial | WALTON | - | 38081 | 100.00% | 12:00 PM | Friday | 11,894.57 | 0.51 | 5,852.13 | 2,228.55 |
| 52 | US-78 Eastbound (PARK PLACE BLVD to CHEEK RD) | GA-20/MAIN ST/CONYERS RD | Arterial | GWINNETT | - | 35885 | 100.00% | 12:00 PM | Friday | 12,246.81 | 0.52 | 5,927.46 | 2,127.07 |
| 53 | I-575 Southbound | GA-92/EXIT 7 | Interstate | CHEROKEE | - | 98956 | 99.20% | 07:00 AM | Tuesday | 3,821.59 | 0.46 | 2,043.36 | 2,022.03 |
| 54 | I-75 Northbound | GA-331/FOREST PKWY/EXIT 237 | Interstate | CLAYTON | - | 202000 | 91.20% | 07:00 AM | Tuesday | 2,444.98 | 0.55 | 998.96 | 2,017.90 |
| 55 | GA-13 Northbound (I-85/GA-403/NORTHWOOD AVE to SIDNEY MARCUS BLVD) | GA-237/PIEDMONT AVE | Expressway | FULTON | - | 88400 | 100.00% | 05:00 PM | Tuesday | 4,237.24 | 0.47 | 2,233.03 | 1,973.99 |
| 56 | GA-400 Northbound | SIDNEY MARCUS BLVD/EXIT 1 | Expressway | FULTON | - | 132568 | 98.60% | 08:00 AM | Tuesday | 3,337.16 | 0.55 | 1,487.28 | 1,971.66 |
| 57 | I-285 Counterclockwise | INNER LOOP RD/EXIT 59 | Interstate | CLAYTON | Airport South CID | 183730 | 100.00% | 04:00 PM | Wednesday | 2,159.80 | 0.51 | 1,060.46 | 1,948.39 |
| 58 | GA-141 Southbound (JIMMY CARTER BLVD to PEACHTREE RD) | I-285 | Expressway | DEKALB | - | 69119 | 100.00% | 02:00 PM | Wednesday | 5,567.24 | 0.51 | 2,755.78 | 1,904.77 |
| 59 | CAMP CREEK PKY Northbound (WASHINGTON RD to CAMP CREEK PKWY (EAST)) | I-285 | Arterial | FULTON | Airport West CID | 47905 | 100.00% | 04:00 PM | Friday | 7,804.67 | 0.49 | 3,972.58 | 1,903.06 |
| 60 | GA-316 Eastbound (BOGGS RD to GA-20/GA-124/BUFORD DR) | RIVERSIDE PKWY | Expressway | GWINNETT | - | 94548 | 90.70% | 05:00 PM | Wednesday | 4,378.38 | 0.50 | 1,989.57 | 1,881.10 |
| 61 | GA-141 Northbound (GA-9/ROSWELL RD/W PACES FERRY RD NW to I-285) | ASHFORD DUNWOODY RD | Arterial | DEKALB | - | 29903 | 100.00% | 05:00 PM | Saturday | 10,928.76 | 0.44 | 6,131.03 | 1,833.36 |
| 62 | GA-10 Westbound | I-75/I-85 | Expressway | FULTON | - | 70800 | 100.00% | 03:00 PM | Thursday | 4,475.67 | 0.43 | 2,551.13 | 1,806.20 |
| 63 | US-19 Northbound (WHITEHALL ST to US-19/GA-9/14TH ST) | SIMPSON ST | Arterial | FULTON | - | 33700 | 100.00% | 05:00 PM | Wednesday | 9,676.52 | 0.45 | 5,283.38 | 1,780.50 |
| 64 | US-19 Southbound (10TH ST to WELLS ST) | SIMPSON ST | Arterial | FULTON | - | 40645 | 100.00% | 04:00 PM | Friday | 7,574.89 | 0.44 | 4,219.21 | 1,714.90 |
| 65 | I-20 Westbound | GA-6/THORNTON RD/EXIT 44 | Interstate | DOUGLAS | - | 123425 | 92.90% | 05:00 PM | Friday | 2,894.51 | 0.49 | 1,366.01 | 1,686.00 |
| 66 | CAMP CREEK PKY Southbound (CAMP CREEK PKWY (EAST) to HERSCHEL RD) | I-285 | Arterial | FULTON | Airport West CID | 48213 | 100.00% | 02:00 PM | Friday | 6,594.72 | 0.48 | 3,442.44 | 1,659.71 |
| 67 | US-78 Westbound (US-29/GA-8/LAWRENCEVILLE HWY to US-278/GA-6/THORNTON RD/C H JAMES PKWY) | OAKDALE RD/DISCOVERY BLVD | Arterial | FULTON | - | 26791 | 100.00% | 04:00 PM | Wednesday | 10,708.90 | 0.43 | 6,114.78 | 1,638.21 |
| 68 | US-78 Eastbound (US-278/GA-6/THORNTON RD/C H JAMES PKWY to GA-3/NORTHSIDE DR) | I-285/GA-407 | Arterial | FULTON | - | 31621 | 100.00% | 03:00 PM | Wednesday | 9,322.91 | 0.45 | 5,164.89 | 1,633.19 |
| 69 | US-78 Eastbound (US-29/GA-8/LAWRENCEVILLE HWY to ROCKBRIDGE RD/PARK PLACE BLVD) | ROCKBRIDGE RD/PARK PLACE BLVD | Expressway | DEKALB | - | 104000 | 100.00% | 05:00 PM | Tuesday | 2,956.04 | 0.52 | 1,415.94 | 1,472.58 |
| 70 | GA-141 Southbound (CHAMBLEE DUNWOODY RD to GA-9/ROSWELL RD/W PACES FERRY RD NW) | BOLLING WAY | Arterial | FULTON | Buckhead CID | 38100 | 100.00% | 12:00 PM | Friday | 6,727.20 | 0.43 | 3,807.60 | 1,450.69 |
| 71 | ABERNATHY RD Eastbound | US-19/GA-400 | Arterial | FULTON | Fulton & DeKalb Perimeter CID | 27400 | 100.00% | 05:00 PM | Wednesday | 9,182.25 | 0.43 | 5,243.06 | 1,436.60 |
| 72 | GA-141 Northbound (GA-9/ROSWELL RD/W PACES FERRY RD NW to I-285) | GA-237/PIEDMONT RD | Arterial | FULTON | Buckhead CID | 38100 | 100.00% | 01:00 PM | Saturday | 6,506.65 | 0.44 | 3,617.70 | 1,378.34 |
| 73 | I-285 Counterclockwise | GA-14/EXIT 1 | Interstate | FULTON | - | 154000 | 95.10% | 05:00 PM | Friday | 2,090.17 | 0.56 | 880.57 | 1,356.08 |
| 74 | ABERNATHY RD Westbound | BARFIELD RD/GLENLAKE PKWY | Arterial | FULTON | Fulton & DeKalb Perimeter CID | 27400 | 100.00% | 03:00 PM | Wednesday | 8,516.21 | 0.42 | 4,939.40 | 1,353.40 |
| 75 | GA-166 Eastbound (GA-92 to GA-166/MELLWOOD AVE/EXIT 5A) | GA-166/MELLWOOD AVE/EXIT 5A | Arterial | FULTON | - | 31334 | 100.00% | 03:00 PM | Friday | 8,016.01 | 0.49 | 4,088.17 | 1,280.99 |
| 76 | US-19 Northbound (I-285/EXIT 4 to GA-369/BROWNS BRIDGE RD) | MCFARLAND RD/EXIT 12 | Expressway | FORSYTH | - | 101511 | 78.10% | 05:00 PM | Tuesday | 2,944.36 | 0.45 | 1,255.55 | 1,274.52 |
| 77 | GA-316 Westbound (GA-20/GA-124/BUFORD DR to I-85) | SUGARLOAF PKWY | Expressway | GWINNETT | - | 104508 | 96.70% | 06:00 AM | Friday | 2,721.61 | 0.54 | 1,202.73 | 1,256.95 |
| 78 | GA-13 Southbound (US-23/GA-155/CLAIRMONT TER to SIDNEY MARCUS BLVD) | LENOX RD NE | Arterial | DEKALB | - | 21587 | 100.00% | 04:00 PM | Thursday | 10,628.86 | 0.47 | 5,633.30 | 1,216.06 |
| 79 | US-78 Westbound (ROCKBRIDGE RD/PARK PLACE BLVD to US-29/GA-8/LAWRENCEVILLE HWY) | DRUID HILLS RD | Expressway | DEKALB | - | 75200 | 100.00% | 08:00 AM | Wednesday | 3,833.26 | 0.58 | 1,594.64 | 1,199.17 |
| 80 | SUGARLOAF PKWY Southbound (US-29/UNIVERSITY PKWY SE to NEW HOPE RD SE) | US-29/UNIVERSITY PKWY SE | Expressway | GWINNETT | - | - | 100.00% | 07:00 AM | Wednesday | 2,767.30 | 0.59 | 1,131.83 | 1,131.83 |
| 80 | SUGARLOAF PKWY Southbound (W CAMPBELL RD to GA-20/LOGANVILLE HWY) | US-29/UNIVERSITY PKWY SE | Expressway | GWINNETT | - | - | 100.00% | 07:00 AM | Wednesday | 2,767.30 | 0.59 | 1,131.83 | 1,131.83 |
| 82 | I-75 Northbound | I-285/EXIT 259 | Interstate | COBB | Cumberland CID | 149000 | 94.80% | 05:00 PM | Tuesday | 1,628.92 | 0.56 | 685.63 | 1,021.59 |
| 83 | I-85 Northbound | FLAT SHOALS RD/EXIT 66 | Interstate | FULTON | - | 162801 | 74.00% | 07:00 AM | Friday | 1,701.88 | 0.52 | 609.55 | 992.35 |
| 84 | GA-166 Westbound (BANKHEAD HWY/NORTHSIDE DR to GA--AL STATE BORDER) | US-27 ALT/GA-16/NEWNAN RD | Arterial | CARROLL | - | 14104 | 100.00% | 03:00 PM | Friday | 13,182.30 | 0.47 | 6,973.44 | 983.53 |
| 85 | US-19 Northbound (I-285/EXIT 4 to GA-369/BROWNS BRIDGE RD) | ABERNATHY RD/EXIT 5 | Expressway | FULTON | Fulton & DeKalb Perimeter CID | 185543 | 80.30% | 04:00 PM | Wednesday | 1,086.73 | 0.42 | 503.52 | 934.24 |
| 86 | I-85 Southbound | CAMP CREEK PKWY (EAST) | Interstate | FULTON | - | 148000 | 100.00% | 10:00 PM | Sunday | 1,393.98 | 0.57 | 595.23 | 880.94 |
| 87 | US-19 Southbound (MORROW INDUSTRIAL BLVD to GA-92/OLD ATLANTA RD) | GA-92 | Arterial | SPALDING | - | 28393 | 100.00% | 05:00 PM | Friday | 7,317.10 | 0.60 | 2,948.79 | 837.25 |
| 88 | GA-141 Northbound (I-285 to HOLCOMB BRIDGE RD) | TILLY MILL RD | Expressway | DEKALB | - | 79100 | 100.00% | 05:00 PM | Wednesday | 1,992.24 | 0.55 | 892.52 | 705.99 |
| 89 | GA-166 Eastbound (ROME ST to GA-61/CARROLLTON VILLA RICA HWY) | BANKHEAD HWY/NORTHSIDE DR | Arterial | CARROLL | - | 19636 | 100.00% | 03:00 PM | Thursday | 7,171.92 | 0.50 | 3,571.62 | 701.32 |
| 90 | GA-166 Westbound (GA-166/MELLWOOD AVE/EXIT 5A to GA-92) | COUNTY LINE RD | Arterial | FULTON | - | 21779 | 100.00% | 05:00 PM | Thursday | 5,879.65 | 0.48 | 3,051.54 | 664.59 |
| 91 | I-85 Southbound | GA-138/EXIT 64 | Interstate | FULTON | - | 144094 | 73.40% | 05:00 PM | Wednesday | 1,208.34 | 0.53 | 421.29 | 607.05 |
| 92 | GA-141 Northbound (I-285 to HOLCOMB BRIDGE RD) | HOLCOMB BRIDGE RD | Expressway | GWINNETT | - | 46200 | 100.00% | 04:00 PM | Wednesday | 2,306.90 | 0.45 | 1,268.80 | 586.18 |
| 93 | I-675 Southbound | ELLENWOOD RD/EXIT 5 | Interstate | CLAYTON | - | 73840 | 86.00% | 05:00 PM | Tuesday | 1,767.00 | 0.49 | 776.53 | 573.39 |
| 94 | GA-166 Eastbound (GA-92 to GA-166/MELLWOOD AVE/EXIT 5A) | GA-70/CASCADE PALMETTO HWY | Arterial | FULTON | - | 16174 | 100.00% | 07:00 AM | Thursday | 6,157.56 | 0.46 | 3,312.77 | 535.81 |
| 95 | I-85 Southbound | GA-317/EXIT 111 | Interstate | GWINNETT | - | 165000 | 70.10% | 08:00 AM | Tuesday | 1,037.32 | 0.57 | 314.13 | 518.32 |
| 96 | I-85 Northbound | GA-42/DRUID HILLS RD/EXIT 89 | Interstate | DEKALB | - | 230181 | 80.30% | 05:00 PM | Wednesday | 585.39 | 0.53 | 220.93 | 508.54 |
| 97 | I-285 Counterclockwise | GA-54/JONESBORO RD/EXIT 55 | Interstate | FULTON | - | 151201 | 71.50% | 04:00 PM | Thursday | 922.76 | 0.50 | 332.53 | 502.78 |
| 98 | I-20 Eastbound | WEST AVE/EXIT 80 | Interstate | ROCKDALE | - | 121063 | 74.00% | 05:00 PM | Friday | 1,170.95 | 0.53 | 407.26 | 493.04 |
| 100 | US-19 Northbound (WHITEHALL ST to US-19/GA-9/14TH ST) | 10TH ST | Arterial | FULTON | Upper Westside CID | 37900 | 100.00% | 05:00 PM | Thursday | 1,982.88 | 0.41 | 1,165.93 | 441.89 |
| 101 | US-78 Westbound (ROCKBRIDGE RD/PARK PLACE BLVD to US-29/GA-8/LAWRENCEVILLE HWY) | JEFFERSON DAVIS DR | Expressway | DEKALB | - | 104000 | 99.70% | 07:00 AM | Wednesday | 977.41 | 0.58 | 406.36 | 422.61 |
| 103 | GA-10 Westbound | PONCE DE LEON AVE | Expressway | DEKALB | - | 34641 | 100.00% | 05:00 PM | Wednesday | 2,404.87 | 0.51 | 1,168.77 | 404.87 |
| 104 | I-75 Northbound | I-85/EXIT 242 | Interstate | FULTON | - | 266000 | 88.20% | 07:00 AM | Tuesday | 343.56 | 0.50 | 151.21 | 402.21 |
| 106 | US-78 Eastbound (US-29/GA-8/LAWRENCEVILLE HWY to ROCKBRIDGE RD/PARK PLACE BLVD) | DRUID HILLS RD | Expressway | DEKALB | - | 50500 | 100.00% | 05:00 PM | Wednesday | 1,802.31 | 0.61 | 706.51 | 356.79 |
| 107 | US-19 Southbound (10TH ST to WELLS ST) | US-19/GA-9/14TH ST | Arterial | FULTON | - | 32922 | 100.00% | 04:00 PM | Thursday | 1,759.25 | 0.41 | 1,046.75 | 344.61 |
| 108 | RONALD REAGAN PKY Northbound | GA-124/SCENIC HWY | Expressway | GWINNETT | - | 27100 | 100.00% | 08:00 AM | Friday | 2,366.16 | 0.47 | 1,244.60 | 337.29 |
| 109 | US-78 Eastbound (GA-5/BILL ARP RD to MIDWAY RD) | GA-92/CAMPBELLTON ST/DALLAS HWY | Arterial | DOUGLAS | - | 10486 | 100.00% | 01:00 PM | Wednesday | 5,980.51 | 0.49 | 3,073.98 | 322.34 |
| 110 | US-78 Westbound (GA-92/FAIRBURN RD to GA-5/BILL ARP RD) | GA-5/BILL ARP RD | Arterial | DOUGLAS | - | 10486 | 100.00% | 04:00 PM | Thursday | 5,204.80 | 0.47 | 2,779.36 | 291.44 |
| 111 | GA-316 Westbound (GA-20/GA-124/BUFORD DR to I-85) | COLLINS HILL RD | Expressway | GWINNETT | - | 56253 | 100.00% | 07:00 AM | Wednesday | 1,401.65 | 0.63 | 517.21 | 290.95 |
| 112 | GA-166 Westbound (I-85/I-75 to I-285) | I-285 | Expressway | FULTON | - | 63900 | 100.00% | 05:00 PM | Friday | 1,114.79 | 0.60 | 449.26 | 287.08 |
| 113 | I-985 Southbound | I-85 | Interstate | GWINNETT | - | 74800 | 73.70% | 08:00 AM | Tuesday | 1,113.33 | 0.54 | 379.90 | 284.17 |
| 114 | I-985 Southbound | GA-60/EXIT 20 | Interstate | HALL | - | 70500 | 84.90% | 05:00 PM | Thursday | 1,065.96 | 0.57 | 391.87 | 276.26 |
| 115 | I-675 Southbound | I-675 | Interstate | HENRY | - | 59100 | 92.90% | 11:00 AM | Sunday | 948.67 | 0.50 | 442.42 | 261.47 |
| 116 | I-675 Northbound | US-23/GA-42/EXIT 2 | Interstate | CLAYTON | - | 72316 | 69.90% | 07:00 AM | Tuesday | 1,035.29 | 0.52 | 346.64 | 250.67 |
| 117 | US-19 Southbound (GA-81/UPPER WOOLSEY RD to GA-369/BROWNS BRIDGE RD) | GA-20/BRUTON SMITH PKWY | Arterial | HENRY | - | 18849 | 100.00% | 07:00 AM | Thursday | 2,136.02 | 0.44 | 1,202.58 | 226.67 |
| 118 | US-78 Eastbound (PARK PLACE BLVD to CHEEK RD) | GA-83/JAMES HUFF RD/UNISIA DR | Arterial | WALTON | - | 27166 | 100.00% | 03:00 PM | Tuesday | 1,510.15 | 0.46 | 815.48 | 221.53 |
| 119 | GA-14-SPUR Eastbound | I-285/I-85/GA-407/GA-403 | Expressway | FULTON | Airport West CID | 63067 | 100.00% | 04:00 PM | Friday | 804.82 | 0.60 | 325.15 | 205.06 |
| 120 | I-985 Northbound | GA-53/EXIT 16 | Interstate | HALL | - | 69985 | 62.20% | 07:00 AM | Friday | 1,030.04 | 0.56 | 285.10 | 199.53 |
| 121 | GA-141 Southbound (JIMMY CARTER BLVD to PEACHTREE RD) | JIMMY CARTER BLVD | Expressway | GWINNETT | - | 79100 | 99.20% | 08:00 AM | Tuesday | 547.76 | 0.60 | 218.44 | 172.78 |
| 122 | GA-166 Westbound (I-85/I-75 to I-285) | LAKEWOOD AVE/PERKERSON RD | Expressway | FULTON | - | 64200 | 100.00% | 05:00 PM | Friday | 600.76 | 0.61 | 236.10 | 151.58 |
| 124 | US-78 Westbound (NEW HOPE CHURCH RD to ROCKBRIDGE RD/PARK PLACE BLVD) | GA-83/JAMES HUFF RD/UNISIA DR | Arterial | WALTON | - | 22700 | 100.00% | 05:00 PM | Tuesday | 1,168.61 | 0.47 | 618.19 | 140.33 |
| 125 | GA-166 Eastbound (I-285 to I-85/I-75) | CAMPBELLTON RD/GREENBRIAR PKWY | Expressway | FULTON | - | 63900 | 100.00% | 04:00 PM | Friday | 563.32 | 0.61 | 219.13 | 140.03 |
| 126 | US-78 Westbound (ROCKBRIDGE RD/PARK PLACE BLVD to US-29/GA-8/LAWRENCEVILLE HWY) | GA-236/HUGH HOWELL RD | Expressway | DEKALB | - | 104000 | 97.50% | 07:00 AM | Wednesday | 342.97 | 0.60 | 132.42 | 137.72 |
| 127 | GA-166 Westbound (GA-166/MELLWOOD AVE/EXIT 5A to GA-92) | CAMP CREEK PKWY | Arterial | FULTON | - | 12394 | 100.00% | 05:00 PM | Wednesday | 1,826.69 | 0.41 | 1,068.61 | 132.44 |
| 128 | I-75 Northbound | OLD ALLATOONA RD/EXIT 283 | Interstate | BARTOW | - | 100171 | 69.60% | 03:00 PM | Friday | 345.01 | 0.53 | 111.90 | 112.09 |
| 129 | I-575 Southbound | GA-20/EXIT 19 | Interstate | CHEROKEE | - | 55564 | 99.50% | 05:00 PM | Saturday | 517.61 | 0.61 | 201.37 | 111.89 |
| 130 | I-85 Northbound | GA-139/RIVERDALE RD/EXIT 71 | Interstate | CLAYTON | Airport South CID | 107854 | 91.50% | 10:00 PM | Friday | 265.05 | 0.58 | 102.59 | 110.64 |
| 131 | GA-14-SPUR Westbound | BUFFINGTON RD | Expressway | FULTON | Airport West CID | 74821 | 90.40% | 08:00 AM | Thursday | 356.18 | 0.55 | 145.22 | 108.65 |
| 132 | RONALD REAGAN PKY Northbound | GA-29/LAWRENCEVILLE HWY | Expressway | GWINNETT | Lilburn CID | 40506 | 100.00% | 07:00 AM | Tuesday | 563.43 | 0.57 | 239.46 | 96.99 |
| 133 | GA-166 Westbound (I-85/I-75 to I-285) | WOMACK AVE/KNOTTS AVE | Expressway | FULTON | - | 45000 | 99.70% | 05:00 PM | Thursday | 475.04 | 0.56 | 207.92 | 93.56 |
| 134 | GA-166 Eastbound (I-285 to I-85/I-75) | LAKEWOOD AVE/PERKERSON RD | Expressway | FULTON | - | 64200 | 99.70% | 07:00 AM | Friday | 352.52 | 0.62 | 133.20 | 85.52 |
| 135 | I-575 Northbound | GA-20/EXIT 19 | Interstate | CHEROKEE | - | 55368 | 98.10% | 05:00 PM | Friday | 253.59 | 0.60 | 100.01 | 55.37 |
| 136 | I-285 Counterclockwise | I-85/I-285 WEST SPLIT/EXIT 44 | Interstate | FULTON | Airport West CID | 77216 | 73.20% | 04:00 PM | Thursday | 194.07 | 0.53 | 67.19 | 51.88 |
| 137 | GA-316 Eastbound (BOGGS RD to GA-20/GA-124/BUFORD DR) | GA-20/GA-124/BUFORD DR | Expressway | GWINNETT | - | 56035 | 59.70% | 04:00 PM | Tuesday | 107.21 | 0.51 | 31.11 | 17.43 |
| 138 | GA-166 Westbound (BANKHEAD HWY/NORTHSIDE DR to GA--AL STATE BORDER) | MAPLE ST | Arterial | CARROLL | - | 17728 | 99.70% | 05:00 PM | Thursday | 58.71 | 0.25 | 43.84 | 7.77 |
Downtown Connector Northbound
Download Report (ARC Only) (.docx)| Extent | From I-85 SPLIT/EXIT 242 to TECHWOOD DR/EXIT 103 |
| Segments | 37 |
| Corridor Length (miles) | 7.42 |
| Days Analyzed | 365 |
| Total Congestion Events | 1789 |
| Recurring Bottlenecks Identified | 11 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | EXIT 248 | FULTON | 268000 | 99.18% | 04:00 PM | Friday | 5,052.07 | 0.34 | 3,293.00 |
| 2 | EXIT 244 | FULTON | 349000 | 98.63% | 04:00 PM | Friday | 4,594.65 | 0.36 | 2,904.82 |
| 3 | EXIT 247 | FULTON | 339000 | 99.18% | 04:00 PM | Friday | 2,932.32 | 0.35 | 1,904.92 |
| 4 | EXIT 246 | FULTON | 353000 | 99.18% | 04:00 PM | Friday | 2,781.53 | 0.33 | 1,856.62 |
| 5 | EXIT 249 | FULTON | 347000 | 99.18% | 04:00 PM | Friday | 3,266.03 | 0.49 | 1,642.70 |
| 6 | EXIT 245 | FULTON | 353000 | 98.90% | 04:00 PM | Friday | 997.51 | 0.31 | 685.15 |
| 7 | EXIT 243 | FULTON | 349000 | 90.14% | 07:00 AM | Thursday | 987.17 | 0.40 | 537.02 |
| 8 | EXIT 250 | FULTON | 342000 | 96.71% | 05:00 PM | Tuesday | 802.23 | 0.58 | 325.47 |
| 9 | EXIT 103 | FULTON | 355157 | 64.11% | 08:00 AM | Tuesday | 229.71 | 0.53 | 69.66 |
| 10 | EXIT 242 | FULTON | 349000 | 88.77% | 07:00 AM | Thursday | 132.62 | 0.48 | 60.63 |
| 11 | EXIT 251 | FULTON | 396520 | 71.78% | 08:00 AM | Tuesday | 139.80 | 0.54 | 46.26 |
Northbound (corridor_id=7): 37 TMCs, 7.42 total miles, average 0.20 mi/segment. Range: 0.004 mi (WILLIAMS ST/SB EXIT 249C, seg 30) to 1.055 mi (UNIVERSITY AVE/EXIT 244, seg 4). Most segments are well under 0.4 mi.
* The individual exit severity scores above look modest because each is scored on its own short segment (average 0.20 mi here) — severity scales directly with segment length (annual mile-hours = congested hours × miles), so a short segment can only ever accumulate a fraction of the mile-hours a longer one does at the same occurrence rate. Scored as a whole corridor instead — this direction's full detected bottleneck extent, as shown in the Top Bottlenecks tab — it ranks the single highest severity_index region-wide (10,104.5, AADT-weighted 35,973.8).
Downtown Connector Southbound
Download Report (ARC Only) (.docx)| Extent | From TECHWOOD DR/EXIT 103 to I-85 SPLIT/EXIT 242 |
| Segments | 37 |
| Corridor Length (miles) | 7.35 |
| Days Analyzed | 365 |
| Total Congestion Events | 3368 |
| Recurring Bottlenecks Identified | 10 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | EXIT 249 | FULTON | 359268 | 100.00% | 03:00 PM | Friday | 5,547.30 | 0.41 | 3,248.63 |
| 2 | EXIT 248 | FULTON | 347000 | 100.00% | 04:00 PM | Friday | 3,323.74 | 0.43 | 1,903.17 |
| 3 | EXIT 250 | FULTON | 381044 | 99.45% | 03:00 PM | Friday | 2,350.89 | 0.32 | 1,596.82 |
| 4 | EXIT 247 | FULTON | 268000 | 100.00% | 04:00 PM | Friday | 784.98 | 0.53 | 366.00 |
| 5 | EXIT 103 | FULTON | 365000 | 98.90% | 03:00 PM | Thursday | 234.80 | 0.27 | 170.45 |
| 6 | EXIT 243 | FULTON | 349000 | 52.05% | 05:00 PM | Thursday | 569.12 | 0.55 | 132.71 |
| 7 | EXIT 246 | FULTON | 268000 | 71.23% | 04:00 PM | Saturday | 253.29 | 0.55 | 81.10 |
| 8 | EXIT 244 | FULTON | 353000 | 52.88% | 05:00 PM | Saturday | 278.09 | 0.53 | 69.19 |
| 9 | EXIT 245 | FULTON | 351920 | 52.60% | 05:00 PM | Saturday | 122.94 | 0.53 | 30.26 |
| 10 | EXIT 242 | FULTON | 349000 | 45.48% | 05:00 PM | Thursday | 96.25 | 0.54 | 20.29 |
Southbound (corridor_id=8): 37 TMCs, 7.35 total miles, average 0.20 mi/segment. Range: 0.028 mi (GA-10/FREEDOM PKWY/NB EXIT 248C, seg 16) to 1.042 mi (GA-166/LANGFORD PKWY/SB EXIT 243, seg 34). Most segments are well under 0.3 mi.
* The individual exit severity scores above look modest because each is scored on its own short segment (average 0.20 mi here) — severity scales directly with segment length (annual mile-hours = congested hours × miles), so a short segment can only ever accumulate a fraction of the mile-hours a longer one does at the same occurrence rate. Scored as a whole corridor instead — this direction's full detected bottleneck extent, as shown in the Top Bottlenecks tab — it ranks the #2 highest severity_index region-wide (6,990.3, AADT-weighted 25,934.2).
I-20 Eastbound
Download Report (ARC Only) (.docx)| Extent | From US-27/EXIT 11 to WALTON/MORGAN COUNTY LINE |
| Segments | 102 |
| Corridor Length (miles) | 92.79 |
| Days Analyzed | 365 |
| Total Congestion Events | 7152 |
| Recurring Bottlenecks Identified | 4 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | I-285/EXIT 10B | FULTON | 185000 | 100.00% | 03:00 PM | Friday | 12,895.24 | 0.48 | 6,757.11 |
| 2 | PANOLA RD/EXIT 71 | DEKALB | 152429 | 97.80% | 04:00 PM | Friday | 6,742.24 | 0.44 | 3,712.37 |
| 3 | WINDSOR ST | FULTON | 192038 | 100.00% | 05:00 PM | Wednesday | 2,988.34 | 0.53 | 1,392.57 |
| 4 | WEST AVE/EXIT 80 | ROCKDALE | 121063 | 74.00% | 05:00 PM | Friday | 1,170.95 | 0.53 | 407.26 |
Eastbound (corridor_id=37): 102 TMCs, 92.79 total miles, average 0.91 mi/segment. Range: 0.032 mi (WINDSOR ST, seg 44) to 6.986 mi (GA-113/EXIT 19, seg 3). Most segments are well under 1.4 mi.
I-20 Westbound
Download Report (ARC Only) (.docx)| Extent | From WALTON/MORGAN COUNTY LINE to BUNCOMBE WACO RD/EXIT 9 |
| Segments | 102 |
| Corridor Length (miles) | 92.81 |
| Days Analyzed | 365 |
| Total Congestion Events | 7828 |
| Recurring Bottlenecks Identified | 4 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | WESLEY CHAPEL RD/EXIT 68 | DEKALB | 161000 | 99.20% | 07:00 AM | Friday | 12,277.16 | 0.46 | 6,540.09 |
| 2 | GA-70/FULTON INDUSTRIAL BLVD/EXIT 49 | FULTON | 185000 | 99.50% | 04:00 PM | Tuesday | 4,491.35 | 0.50 | 2,252.32 |
| 3 | CAPITOL AVE/EXIT 248D | FULTON | 231000 | 100.00% | 08:00 AM | Friday | 4,313.84 | 0.49 | 2,208.69 |
| 4 | GA-6/THORNTON RD/EXIT 44 | DOUGLAS | 123425 | 92.90% | 05:00 PM | Wednesday | 2,894.51 | 0.49 | 1,366.01 |
Westbound (corridor_id=26): 102 TMCs, 92.81 total miles, average 0.91 mi/segment. Range: 0.040 mi (ASHBY ST/EXIT 55, seg 63) to 6.944 mi (US-27/EXIT 11, seg 100). Most segments are well under 1.4 mi.
I-285 Clockwise
Download Report (ARC Only) (.docx)| Extent | From GA-14/EXIT 1 to I-85/I-285 WEST SPLIT/EXIT 44 |
| Segments | 102 |
| Corridor Length (miles) | 62.70 |
| Days Analyzed | 364 |
| Total Congestion Events | 9945 |
| Recurring Bottlenecks Identified | 4 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | PACES FERRY RD/EXIT 18 | COBB | 183006 | 98.40% | 05:00 PM | Thursday | 10,573.07 | 0.50 | 5,222.76 |
| 2 | I-85/EXIT 33 | DEKALB | 219000 | 99.50% | 04:00 PM | Thursday | 7,026.79 | 0.45 | 3,873.38 |
| 3 | GA-139/MARTIN LUTHER KING DR/EXIT 9 | FULTON | 151000 | 94.00% | 04:00 PM | Thursday | 6,278.75 | 0.46 | 3,163.49 |
| 4 | GA-139/RIVERDALE RD/EXIT 60 | CLAYTON | 188114 | 97.00% | 05:00 PM | Friday | 2,662.88 | 0.52 | 1,242.42 |
Clockwise (corridor_id=31): 102 TMCs, 62.70 total miles, average 0.61 mi/segment. Range: 0.021 mi (GA-14/EXIT 1, seg 1) to 2.359 mi (BOULDERCREST RD/EXIT 51, seg 79). Most segments are well under 1.0 mi.
I-285 Counterclockwise
Download Report (ARC Only) (.docx)| Extent | From I-285/EXIT 44 to GA-14/EXIT 1 |
| Segments | 102 |
| Corridor Length (miles) | 62.79 |
| Days Analyzed | 365 |
| Total Congestion Events | 11341 |
| Recurring Bottlenecks Identified | 9 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | US-78/US-278/EXIT 12 | FULTON | 163173 | 98.90% | 04:00 PM | Thursday | 9,367.10 | 0.44 | 5,215.67 |
| 2 | NORTHSIDE DR/EXIT 22 | FULTON | 211082 | 96.20% | 04:00 PM | Thursday | 8,990.34 | 0.42 | 5,016.25 |
| 3 | I-20/EXIT 46 | DEKALB | 144000 | 99.50% | 04:00 PM | Thursday | 8,351.05 | 0.43 | 4,719.68 |
| 4 | NORTHLAKE MALL/EXIT 36 | DEKALB | 200000 | 98.90% | 07:00 AM | Wednesday | 7,597.43 | 0.52 | 3,614.17 |
| 5 | GA-141/EXIT 31 | DEKALB | 227584 | 98.60% | 08:00 AM | Tuesday | 3,582.09 | 0.49 | 1,783.63 |
| 6 | INNER LOOP RD/EXIT 59 | CLAYTON | 183730 | 100.00% | 04:00 PM | Wednesday | 2,159.80 | 0.51 | 1,060.46 |
| 7 | GA-14/EXIT 1 | FULTON | 154000 | 95.10% | 05:00 PM | Friday | 2,090.17 | 0.56 | 880.57 |
| 8 | GA-54/JONESBORO RD/EXIT 55 | FULTON | 151201 | 71.50% | 04:00 PM | Friday | 922.76 | 0.50 | 332.53 |
| 9 | I-85/I-285 WEST SPLIT/EXIT 44 | FULTON | 77216 | 73.20% | 04:00 PM | Thursday | 194.07 | 0.53 | 67.19 |
Counterclockwise (corridor_id=34): 102 TMCs, 62.79 total miles, average 0.62 mi/segment. Range: 0.009 mi (US-41/COBB PKWY/EXIT 19, seg 77) to 2.141 mi (GA-155/FLAT SHOALS RD/EXIT 48, seg 25). Most segments are well under 1.0 mi.
I-575 Northbound
Download Report (ARC Only) (.docx)| Extent | From ERNEST W BARRETT PKWY/EXIT 1 to CHEROKEE/PICKENS COUNTY LINE |
| Segments | 31 |
| Corridor Length (miles) | 30.39 |
| Days Analyzed | 347 |
| Total Congestion Events | 1897 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | GA-92/EXIT 7 | CHEROKEE | 99772 | 99.20% | 05:00 PM | Thursday | 5,155.03 | 0.49 | 2,587.58 |
| 2 | GA-20/EXIT 19 | CHEROKEE | 55368 | 98.10% | 05:00 PM | Friday | 253.59 | 0.60 | 100.01 |
Northbound (corridor_id=3): 31 TMCs, 30.39 total miles, average 0.98 mi/segment. Range: 0.024 mi (CHEROKEE/PICKENS COUNTY LINE, seg 31) to 3.483 mi (AIRPORT DR/EXIT 24, seg 26). Most segments are well under 1.5 mi.
I-575 Southbound
Download Report (ARC Only) (.docx)| Extent | From CHEROKEE/PICKENS COUNTY LINE to I-75/GA-5/EXIT 268 |
| Segments | 31 |
| Corridor Length (miles) | 30.66 |
| Days Analyzed | 357 |
| Total Congestion Events | 2201 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | GA-92/EXIT 7 | CHEROKEE | 98956 | 99.20% | 07:00 AM | Tuesday | 3,821.59 | 0.46 | 2,043.36 |
| 2 | GA-20/EXIT 19 | CHEROKEE | 55564 | 99.50% | 01:00 PM | Friday | 517.61 | 0.61 | 201.37 |
Southbound (corridor_id=4): 31 TMCs, 30.66 total miles, average 0.99 mi/segment. Range: 0.030 mi (CHEROKEE/PICKENS COUNTY LINE, seg 1) to 3.709 mi (GA-20/GA-5 BUS/EXIT 20, seg 6). Most segments are well under 1.5 mi.
I-675 Northbound
Download Report (ARC Only) (.docx)| Extent | From GA-138/EXIT 1 to I-285 |
| Segments | 11 |
| Corridor Length (miles) | 10.13 |
| Days Analyzed | 212 |
| Total Congestion Events | 405 |
| Recurring Bottlenecks Identified | 1 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | US-23/GA-42/EXIT 2 | CLAYTON | 72316 | 69.90% | 07:00 AM | Tuesday | 1,035.29 | 0.52 | 346.64 |
Northbound (corridor_id=5): 11 TMCs, 10.13 total miles, average 0.92 mi/segment. Range: 0.071 mi (I-285, seg 10) to 2.692 mi (I-285, seg 11). Most segments are well under 1.4 mi.
I-675 Southbound
Download Report (ARC Only) (.docx)| Extent | From ANVIL BLOCK RD/EXIT 7 to I-75 |
| Segments | 11 |
| Corridor Length (miles) | 10.29 |
| Days Analyzed | 312 |
| Total Congestion Events | 874 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ELLENWOOD RD/EXIT 5 | CLAYTON | 73840 | 86.00% | 05:00 PM | Tuesday | 1,767.00 | 0.49 | 776.53 |
| 2 | I-675 | HENRY | 59100 | 92.90% | 11:00 AM | Sunday | 948.67 | 0.50 | 442.42 |
Southbound (corridor_id=6): 11 TMCs, 10.29 total miles, average 0.94 mi/segment. Range: 0.062 mi (I-285, seg 2) to 2.519 mi (ANVIL BLOCK RD/EXIT 7, seg 1). Most segments are well under 1.5 mi.
I-75 Northbound
Download Report (ARC Only) (.docx)| Extent | From SPALDING--HENRY COUNTY BORDER to GA-140/EXIT 306 |
| Segments | 101 |
| Corridor Length (miles) | 92.75 |
| Days Analyzed | 365 |
| Total Congestion Events | 5816 |
| Recurring Bottlenecks Identified | 6 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | JODECO RD/EXIT 222 | HENRY | 165000 | 96.20% | 03:00 PM | Friday | 10,225.16 | 0.42 | 5,685.56 |
| 2 | BARRETT PKWY/EXIT 269 | COBB | 145729 | 97.30% | 05:00 PM | Thursday | 7,502.57 | 0.44 | 4,080.70 |
| 3 | GA-331/FOREST PKWY/EXIT 237 | CLAYTON | 202000 | 91.20% | 07:00 AM | Tuesday | 2,444.98 | 0.55 | 998.96 |
| 4 | I-285/EXIT 259 | COBB | 149000 | 94.80% | 05:00 PM | Tuesday | 1,628.92 | 0.56 | 685.63 |
| 5 | I-85/EXIT 242 | FULTON | 266000 | 88.20% | 07:00 AM | Tuesday | 343.56 | 0.50 | 151.21 |
| 6 | OLD ALLATOONA RD/EXIT 283 | BARTOW | 100171 | 69.60% | 03:00 PM | Friday | 345.01 | 0.53 | 111.90 |
Northbound (corridor_id=1): 101 TMCs, 92.75 total miles, average 0.92 mi/segment. Range: 0.035 mi (US-41/US-19/GA-3/CROWN RD, seg 38) to 8.658 mi (GA-140/EXIT 306, seg 100). Most segments are well under 1.4 mi.
I-75 Southbound
Download Report (ARC Only) (.docx)| Extent | From GA-140/EXIT 306 to GA-16/EXIT 205 |
| Segments | 101 |
| Corridor Length (miles) | 92.65 |
| Days Analyzed | 364 |
| Total Congestion Events | 8071 |
| Recurring Bottlenecks Identified | 5 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | HUDSON BRIDGE RD/EXIT 224 | HENRY | 173888 | 99.50% | 11:00 AM | Sunday | 11,189.92 | 0.40 | 6,680.38 |
| 2 | WINDY HILL RD/EXIT 260 | COBB | 325000 | 99.50% | 01:00 PM | Thursday | 11,008.26 | 0.47 | 5,827.11 |
| 3 | I-75 & I-85 JUNCTION | FULTON | 201000 | 99.70% | 05:00 PM | Thursday | 6,749.94 | 0.36 | 4,313.73 |
| 4 | CHASTAIN RD/EXIT 271 | COBB | 137484 | 100.00% | 08:00 AM | Friday | 4,852.93 | 0.52 | 2,353.67 |
| 5 | GA-85/EXIT 237 | CLAYTON | 223000 | 95.10% | 05:00 PM | Friday | 3,299.51 | 0.47 | 1,672.47 |
Southbound (corridor_id=2): 101 TMCs, 92.65 total miles, average 0.92 mi/segment. Range: 0.022 mi (SPALDING/HENRY COUNTY LINE, seg 100) to 8.566 mi (OLD CASS WHITE/EXIT 296, seg 2). Most segments are well under 1.4 mi.
I-85 Northbound
Download Report (ARC Only) (.docx)| Extent | From POPLAR RD to GA-211/EXIT 126 |
| Segments | 100 |
| Corridor Length (miles) | 84.20 |
| Days Analyzed | 365 |
| Total Congestion Events | 7926 |
| Recurring Bottlenecks Identified | 6 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | GA-140/JIMMY CARTER BLVD/EXIT 99 | GWINNETT | 299179 | 99.20% | 04:00 PM | Thursday | 9,938.33 | 0.44 | 5,520.94 |
| 2 | GA-317/EXIT 111 | GWINNETT | 170880 | 95.60% | 05:00 PM | Friday | 4,418.95 | 0.45 | 2,310.81 |
| 3 | I-75 | FULTON | 125000 | 99.70% | 03:00 PM | Thursday | 4,401.73 | 0.52 | 2,119.66 |
| 4 | FLAT SHOALS RD/EXIT 66 | FULTON | 162801 | 74.00% | 07:00 AM | Friday | 1,701.88 | 0.52 | 609.55 |
| 5 | GA-42/DRUID HILLS RD/EXIT 89 | DEKALB | 230181 | 80.30% | 05:00 PM | Wednesday | 585.39 | 0.53 | 220.93 |
| 6 | GA-139/RIVERDALE RD/EXIT 71 | CLAYTON | 107854 | 91.50% | 09:00 PM | Friday | 265.05 | 0.58 | 102.59 |
Northbound (corridor_id=36): 100 TMCs, 84.20 total miles, average 0.84 mi/segment. Range: 0.024 mi (GA-13/WB EXIT 86, seg 54) to 5.759 mi (US-27 ALT/US-29/EXIT 41, seg 4). Most segments are well under 1.3 mi.
I-85 Southbound
Download Report (ARC Only) (.docx)| Extent | From POPLAR RD to GA-29/EXIT 35 |
| Segments | 100 |
| Corridor Length (miles) | 84.25 |
| Days Analyzed | 365 |
| Total Congestion Events | 7013 |
| Recurring Bottlenecks Identified | 5 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | I-75 & I-85 JUNCTION/EXIT 85 | FULTON | 243000 | 99.70% | 08:00 AM | Thursday | 9,939.87 | 0.41 | 5,896.48 |
| 2 | PLEASANTDALE RD/EXIT 96 | DEKALB | 296000 | 99.20% | 07:00 AM | Friday | 9,787.10 | 0.50 | 4,815.57 |
| 3 | CAMP CREEK PKWY (EAST) | FULTON | 148000 | 100.00% | 05:00 PM | Thursday | 1,393.98 | 0.57 | 595.23 |
| 4 | GA-138/EXIT 64 | FULTON | 144094 | 73.40% | 05:00 PM | Wednesday | 1,208.34 | 0.53 | 421.29 |
| 5 | GA-317/EXIT 111 | GWINNETT | 165000 | 70.10% | 08:00 AM | Tuesday | 1,037.32 | 0.57 | 314.13 |
Southbound (corridor_id=35): 100 TMCs, 84.25 total miles, average 0.84 mi/segment. Range: 0.019 mi (GA-400/EB EXIT 87, seg 51) to 5.655 mi (GA-29/EXIT 35, seg 99). Most segments are well under 1.3 mi.
I-985 Northbound
Download Report (ARC Only) (.docx)| Extent | From I-85 to GA-13/JESSE JEWELL PKWY/EXIT 24 |
| Segments | 15 |
| Corridor Length (miles) | 24.41 |
| Days Analyzed | 269 |
| Total Congestion Events | 714 |
| Recurring Bottlenecks Identified | 1 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | GA-53/EXIT 16 | HALL | 69985 | 62.20% | 07:00 AM | Friday | 1,030.04 | 0.56 | 285.10 |
Northbound (corridor_id=30): 15 TMCs, 24.41 total miles, average 1.63 mi/segment. Range: 0.231 mi (I-85, seg 1) to 3.868 mi (FRIENDSHIP RD/EXIT 8, seg 4). Most segments are well under 2.5 mi.
I-985 Southbound
Download Report (ARC Only) (.docx)| Extent | From GA-13/JESSE JEWELL PKWY/EXIT 24 to I-85 |
| Segments | 15 |
| Corridor Length (miles) | 24.26 |
| Days Analyzed | 292 |
| Total Congestion Events | 767 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | GA-60/EXIT 20 | HALL | 70500 | 84.90% | 05:00 PM | Thursday | 1,065.96 | 0.57 | 391.87 |
| 2 | I-85 | GWINNETT | 74800 | 73.70% | 08:00 AM | Tuesday | 1,113.33 | 0.54 | 379.90 |
Southbound (corridor_id=27): 15 TMCs, 24.26 total miles, average 1.62 mi/segment. Range: 0.335 mi (I-85, seg 15) to 4.029 mi (US-23/GA-20/EXIT 4, seg 12). Most segments are well under 2.5 mi.
CAMP CREEK PKY Northbound (I-85 to HERSCHEL RD)
Download Report (ARC Only) (.docx)| Extent | From I-85 to HERSCHEL RD |
| Segments | 4 |
| Corridor Length (miles) | 1.36 |
| Days Analyzed | 0 |
| Total Congestion Events | 0 |
| Recurring Bottlenecks Identified | 0 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
No single location stood out as a discrete recurring bottleneck on this corridor — this usually means congestion here is spread fairly evenly along the corridor's length rather than concentrated at one point (common on beltways/loops). See the segment congestion profile above for where and how much.
Northbound (corridor_id=114): 4 TMCs, 1.36 total miles, average 0.34 mi/segment. Range: 0.080 mi (US-29, seg 2) to 1.077 mi (HERSCHEL RD, seg 4). Most segments are well under 0.6 mi.
CAMP CREEK PKY Southbound (US-29 to I-85)
Download Report (ARC Only) (.docx)| Extent | From US-29 to I-85 |
| Segments | 4 |
| Corridor Length (miles) | 1.38 |
| Days Analyzed | 0 |
| Total Congestion Events | 0 |
| Recurring Bottlenecks Identified | 0 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
No single location stood out as a discrete recurring bottleneck on this corridor — this usually means congestion here is spread fairly evenly along the corridor's length rather than concentrated at one point (common on beltways/loops). See the segment congestion profile above for where and how much.
Southbound (corridor_id=117): 4 TMCs, 1.38 total miles, average 0.35 mi/segment. Range: 0.079 mi (I-85, seg 3) to 1.083 mi (US-29, seg 1). Most segments are well under 0.6 mi.
GA-10 Westbound
Download Report (ARC Only) (.docx)| Extent | From US-78 to I-85/I-75 |
| Segments | 12 |
| Corridor Length (miles) | 3.60 |
| Days Analyzed | 365 |
| Total Congestion Events | 11266 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | I-75/I-85 | FULTON | 70800 | 100.00% | 04:00 PM | Thursday | 4,475.67 | 0.43 | 2,551.13 |
| 2 | PONCE DE LEON AVE | DEKALB | 34641 | 100.00% | 05:00 PM | Wednesday | 2,404.87 | 0.51 | 1,168.77 |
Westbound (corridor_id=104): 12 TMCs, 3.60 total miles, average 0.30 mi/segment. Range: 0.008 mi (MEMORIAL DR, seg 6) to 0.858 mi (BOULEVARD, seg 10). Most segments are well under 0.5 mi.
GA-13 Northbound (I-85/GA-403/NORTHWOOD AVE to SIDNEY MARCUS BLVD)
Download Report (ARC Only) (.docx)| Extent | From I-85/GA-403/NORTHWOOD AVE to SIDNEY MARCUS BLVD |
| Segments | 8 |
| Corridor Length (miles) | 3.29 |
| Days Analyzed | 365 |
| Total Congestion Events | 4974 |
| Recurring Bottlenecks Identified | 1 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | GA-237/PIEDMONT AVE | FULTON | 88400 | 100.00% | 05:00 PM | Tuesday | 4,237.24 | 0.47 | 2,233.03 |
Northbound (corridor_id=118): 8 TMCs, 3.29 total miles, average 0.41 mi/segment. Range: 0.089 mi (SIDNEY MARCUS BLVD, seg 8) to 1.348 mi (I-85/GA-403/NORTHWOOD AVE, seg 1). Most segments are well under 0.7 mi.
GA-13 Southbound (SIDNEY MARCUS BLVD to US-19/GA-9/W PEACHTREE ST NW)
Download Report (ARC Only) (.docx)| Extent | From SIDNEY MARCUS BLVD to US-19/GA-9/W PEACHTREE ST NW |
| Segments | 9 |
| Corridor Length (miles) | 3.35 |
| Days Analyzed | 365 |
| Total Congestion Events | 4121 |
| Recurring Bottlenecks Identified | 1 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | I-85/GA-403/NORTHROPE DR | FULTON | 88400 | 100.00% | 04:00 PM | Thursday | 7,446.93 | 0.39 | 4,535.18 |
Southbound (corridor_id=121): 9 TMCs, 3.35 total miles, average 0.37 mi/segment. Range: 0.066 mi (I-85/GA-403/NORTHROPE DR, seg 2) to 1.361 mi (US-19/GA-9/W PEACHTREE ST NW, seg 8). Most segments are well under 0.6 mi.
GA-14-SPUR Eastbound
Download Report (ARC Only) (.docx)| Extent | From US-29/GA-14/ROOSEVELT HWY to I-285/I-85/GA-407/GA-403 |
| Segments | 5 |
| Corridor Length (miles) | 1.64 |
| Days Analyzed | 210 |
| Total Congestion Events | 435 |
| Recurring Bottlenecks Identified | 1 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | I-285/I-85/GA-407/GA-403 | FULTON | 63067 | 100.00% | 04:00 PM | Friday | 804.82 | 0.60 | 325.15 |
Eastbound (corridor_id=106): 5 TMCs, 1.64 total miles, average 0.33 mi/segment. Range: 0.023 mi (BUFFINGTON RD, seg 3) to 0.922 mi (BUFFINGTON RD, seg 2). Most segments are well under 0.5 mi.
GA-14-SPUR Westbound
Download Report (ARC Only) (.docx)| Extent | From I-285/I-85/GA-407/GA-403 to US-29/GA-14/ROOSEVELT HWY |
| Segments | 5 |
| Corridor Length (miles) | 1.71 |
| Days Analyzed | 126 |
| Total Congestion Events | 237 |
| Recurring Bottlenecks Identified | 1 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | BUFFINGTON RD | FULTON | 74821 | 90.40% | 08:00 AM | Thursday | 356.18 | 0.55 | 145.22 |
Westbound (corridor_id=103): 5 TMCs, 1.71 total miles, average 0.34 mi/segment. Range: 0.030 mi (BUFFINGTON RD, seg 3) to 0.937 mi (US-29/GA-14/ROOSEVELT HWY, seg 4). Most segments are well under 0.6 mi.
GA-141 Northbound (I-285 to HOLCOMB BRIDGE RD)
Download Report (ARC Only) (.docx)| Extent | From I-285 to HOLCOMB BRIDGE RD |
| Segments | 13 |
| Corridor Length (miles) | 4.34 |
| Days Analyzed | 363 |
| Total Congestion Events | 3737 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | HOLCOMB BRIDGE RD | GWINNETT | 46200 | 100.00% | 05:00 PM | Wednesday | 2,306.90 | 0.45 | 1,268.80 |
| 2 | TILLY MILL RD | DEKALB | 79100 | 100.00% | 05:00 PM | Wednesday | 1,992.24 | 0.55 | 892.52 |
Northbound (corridor_id=123): 13 TMCs, 4.34 total miles, average 0.33 mi/segment. Range: 0.027 mi (HOLCOMB BRIDGE RD, seg 13) to 0.797 mi (WINTERS CHAPEL RD, seg 5). Most segments are well under 0.6 mi.
GA-141 Southbound (JIMMY CARTER BLVD to PEACHTREE RD)
Download Report (ARC Only) (.docx)| Extent | From JIMMY CARTER BLVD to PEACHTREE RD |
| Segments | 11 |
| Corridor Length (miles) | 4.50 |
| Days Analyzed | 357 |
| Total Congestion Events | 2144 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | I-285 | DEKALB | 69119 | 100.00% | 08:00 AM | Wednesday | 5,567.24 | 0.51 | 2,755.78 |
| 2 | JIMMY CARTER BLVD | GWINNETT | 79100 | 99.20% | 08:00 AM | Tuesday | 547.76 | 0.60 | 218.44 |
Southbound (corridor_id=126): 11 TMCs, 4.50 total miles, average 0.41 mi/segment. Range: 0.181 mi (JIMMY CARTER BLVD, seg 1) to 0.823 mi (WINTERS CHAPEL RD, seg 6). Most segments are well under 0.7 mi.
GA-166 Eastbound (I-285 to I-85/I-75)
Download Report (ARC Only) (.docx)| Extent | From I-285 to I-85/I-75 |
| Segments | 14 |
| Corridor Length (miles) | 5.62 |
| Days Analyzed | 304 |
| Total Congestion Events | 1085 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | CAMPBELLTON RD/GREENBRIAR PKWY | FULTON | 63900 | 100.00% | 04:00 PM | Friday | 563.32 | 0.61 | 219.13 |
| 2 | LAKEWOOD AVE/PERKERSON RD | FULTON | 64200 | 99.70% | 05:00 PM | Friday | 352.52 | 0.62 | 133.20 |
Eastbound (corridor_id=130): 14 TMCs, 5.62 total miles, average 0.40 mi/segment. Range: 0.009 mi (I-85/I-75, seg 14) to 1.720 mi (DELOWE DR, seg 4). Most segments are well under 0.7 mi.
GA-166 Westbound (I-85/I-75 to I-285)
Download Report (ARC Only) (.docx)| Extent | From I-85/I-75 to I-285 |
| Segments | 15 |
| Corridor Length (miles) | 6.29 |
| Days Analyzed | 337 |
| Total Congestion Events | 2119 |
| Recurring Bottlenecks Identified | 3 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | I-285 | FULTON | 63900 | 100.00% | 04:00 PM | Thursday | 1,114.79 | 0.60 | 449.26 |
| 2 | LAKEWOOD AVE/PERKERSON RD | FULTON | 64200 | 100.00% | 08:00 AM | Friday | 600.76 | 0.61 | 236.10 |
| 3 | WOMACK AVE/KNOTTS AVE | FULTON | 45000 | 99.70% | 05:00 PM | Thursday | 475.04 | 0.56 | 207.92 |
Westbound (corridor_id=131): 15 TMCs, 6.29 total miles, average 0.42 mi/segment. Range: 0.022 mi (DELOWE DR, seg 11) to 1.927 mi (CAMPBELLTON RD/GREENBRIAR PKWY, seg 12). Most segments are well under 0.7 mi.
GA-316 Eastbound (BOGGS RD to GA-20/GA-124/BUFORD DR)
Download Report (ARC Only) (.docx)| Extent | From BOGGS RD to GA-20/GA-124/BUFORD DR |
| Segments | 15 |
| Corridor Length (miles) | 7.65 |
| Days Analyzed | 322 |
| Total Congestion Events | 1085 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | RIVERSIDE PKWY | GWINNETT | 94548 | 90.70% | 05:00 PM | Tuesday | 4,378.38 | 0.50 | 1,989.57 |
| 2 | GA-20/GA-124/BUFORD DR | GWINNETT | 56035 | 59.70% | 04:00 PM | Tuesday | 107.21 | 0.51 | 31.11 |
Eastbound (corridor_id=134): 15 TMCs, 7.65 total miles, average 0.51 mi/segment. Range: 0.041 mi (BOGGS RD, seg 1) to 0.911 mi (SUGARLOAF PKWY, seg 5). Most segments are well under 0.8 mi.
GA-316 Westbound (GA-20/GA-124/BUFORD DR to I-85)
Download Report (ARC Only) (.docx)| Extent | From GA-20/GA-124/BUFORD DR to I-85 |
| Segments | 15 |
| Corridor Length (miles) | 8.20 |
| Days Analyzed | 359 |
| Total Congestion Events | 2913 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | SUGARLOAF PKWY | GWINNETT | 104508 | 96.70% | 06:00 AM | Friday | 2,721.61 | 0.54 | 1,202.73 |
| 2 | COLLINS HILL RD | GWINNETT | 56253 | 100.00% | 07:00 AM | Wednesday | 1,401.65 | 0.63 | 517.21 |
Westbound (corridor_id=137): 15 TMCs, 8.20 total miles, average 0.55 mi/segment. Range: 0.043 mi (I-85, seg 15) to 1.118 mi (I-85, seg 14). Most segments are well under 0.9 mi.
GA-400 Northbound
Download Report (ARC Only) (.docx)| Extent | From SIDNEY MARCUS BLVD/EXIT 1 to I-285 |
| Segments | 11 |
| Corridor Length (miles) | 6.99 |
| Days Analyzed | 289 |
| Total Congestion Events | 972 |
| Recurring Bottlenecks Identified | 1 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | SIDNEY MARCUS BLVD/EXIT 1 | FULTON | 132568 | 98.60% | 08:00 AM | Tuesday | 3,337.16 | 0.55 | 1,487.28 |
Northbound (corridor_id=102): 11 TMCs, 6.99 total miles, average 0.64 mi/segment. Range: 0.078 mi (I-285, seg 11) to 1.363 mi (GA-141/EXIT 2, seg 4). Most segments are well under 1.0 mi.
GA-400 Southbound
Download Report (ARC Only) (.docx)| Extent | From I-285 to I-85/EXIT 87 |
| Segments | 11 |
| Corridor Length (miles) | 6.97 |
| Days Analyzed | 347 |
| Total Congestion Events | 2552 |
| Recurring Bottlenecks Identified | 1 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | I-85/EXIT 87 | FULTON | 83800 | 99.70% | 05:00 PM | Thursday | 6,070.64 | 0.44 | 3,383.31 |
Southbound (corridor_id=97): 11 TMCs, 6.97 total miles, average 0.63 mi/segment. Range: 0.090 mi (I-85/EXIT 87, seg 10) to 1.392 mi (SIDNEY MARCUS BLVD/EXIT 1, seg 8). Most segments are well under 1.0 mi.
RONALD REAGAN PKY Northbound
Download Report (ARC Only) (.docx)| Extent | From WEBB GIN HOUSE RD to PLEASANT HILL RD |
| Segments | 11 |
| Corridor Length (miles) | 7.09 |
| Days Analyzed | 336 |
| Total Congestion Events | 1288 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | GA-124/SCENIC HWY | GWINNETT | 27100 | 100.00% | 05:00 PM | Tuesday | 2,366.16 | 0.47 | 1,244.60 |
| 2 | GA-29/LAWRENCEVILLE HWY | GWINNETT | 40506 | 100.00% | 07:00 AM | Tuesday | 563.43 | 0.57 | 239.46 |
Northbound (corridor_id=109): 11 TMCs, 7.09 total miles, average 0.64 mi/segment. Range: 0.051 mi (GA-124/SCENIC HWY, seg 2) to 1.468 mi (BETHESDA CHURCH RD, seg 6). Most segments are well under 1.0 mi.
RONALD REAGAN PKY Southbound
Download Report (ARC Only) (.docx)| Extent | From GA-29/LAWRENCEVILLE HWY to GA-124/SCENIC HWY |
| Segments | 11 |
| Corridor Length (miles) | 7.25 |
| Days Analyzed | 303 |
| Total Congestion Events | 741 |
| Recurring Bottlenecks Identified | 0 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
No single location stood out as a discrete recurring bottleneck on this corridor — this usually means congestion here is spread fairly evenly along the corridor's length rather than concentrated at one point (common on beltways/loops). See the segment congestion profile above for where and how much.
Southbound (corridor_id=108): 11 TMCs, 7.25 total miles, average 0.66 mi/segment. Range: 0.051 mi (GA-124/SCENIC HWY, seg 11) to 1.644 mi (GA-124/SCENIC HWY, seg 10). Most segments are well under 1.0 mi.
SUGARLOAF PKWY Northbound (GA-20/LOGANVILLE HWY to NEW HOPE RD SE)
Download Report (ARC Only) (.docx)| Extent | From GA-20/LOGANVILLE HWY to NEW HOPE RD SE |
| Segments | 9 |
| Corridor Length (miles) | 6.14 |
| Days Analyzed | 209 |
| Total Congestion Events | 356 |
| Recurring Bottlenecks Identified | 0 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
No single location stood out as a discrete recurring bottleneck on this corridor — this usually means congestion here is spread fairly evenly along the corridor's length rather than concentrated at one point (common on beltways/loops). See the segment congestion profile above for where and how much.
Northbound (corridor_id=138): 9 TMCs, 6.14 total miles, average 0.68 mi/segment. Range: 0.010 mi (GA-20/LOGANVILLE HWY, seg 1) to 1.750 mi (GA-20/LOGANVILLE HWY, seg 2). Most segments are well under 1.1 mi.
SUGARLOAF PKWY Southbound (US-29/UNIVERSITY PKWY SE to NEW HOPE RD SE)
Download Report (ARC Only) (.docx)| Extent | From US-29/UNIVERSITY PKWY SE to NEW HOPE RD SE |
| Segments | 8 |
| Corridor Length (miles) | 6.18 |
| Days Analyzed | 166 |
| Total Congestion Events | 299 |
| Recurring Bottlenecks Identified | 1 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | US-29/UNIVERSITY PKWY SE | GWINNETT | - | 100.00% | 05:00 PM | Wednesday | 2,767.30 | 0.59 | 1,131.83 |
Southbound (corridor_id=141): 8 TMCs, 6.18 total miles, average 0.77 mi/segment. Range: 0.367 mi (US-29/UNIVERSITY PKWY SE, seg 1) to 1.810 mi (NEW HOPE RD SE, seg 4). Most segments are well under 1.2 mi.
SUGARLOAF PKWY Southbound (W CAMPBELL RD to GA-20/LOGANVILLE HWY)
Download Report (ARC Only) (.docx)| Extent | From US-29/UNIVERSITY PKWY SE to GA-20/LOGANVILLE HWY |
| Segments | 9 |
| Corridor Length (miles) | 6.23 |
| Days Analyzed | 166 |
| Total Congestion Events | 305 |
| Recurring Bottlenecks Identified | 1 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | US-29/UNIVERSITY PKWY SE | GWINNETT | - | 100.00% | 05:00 PM | Wednesday | 2,767.30 | 0.59 | 1,131.83 |
Southbound (corridor_id=142): 9 TMCs, 6.23 total miles, average 0.69 mi/segment. Range: 0.053 mi (GA-20/LOGANVILLE HWY, seg 9) to 1.810 mi (NEW HOPE RD SE, seg 4). Most segments are well under 1.1 mi.
US-19 Northbound (GA-362/MERIWETHER ST to GA-92)
Download Report (ARC Only) (.docx)| Extent | From GA-362/MERIWETHER ST to GA-92 |
| Segments | 6 |
| Corridor Length (miles) | 4.10 |
| Days Analyzed | 68 |
| Total Congestion Events | 101 |
| Recurring Bottlenecks Identified | 0 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
No single location stood out as a discrete recurring bottleneck on this corridor — this usually means congestion here is spread fairly evenly along the corridor's length rather than concentrated at one point (common on beltways/loops). See the segment congestion profile above for where and how much.
Northbound (corridor_id=144): 6 TMCs, 4.10 total miles, average 0.68 mi/segment. Range: 0.398 mi (GA-362/MERIWETHER ST, seg 2) to 1.009 mi (GA-92/OLD ATLANTA RD, seg 5). Most segments are well under 1.1 mi.
US-19 Northbound (I-285/EXIT 4 to GA-369/BROWNS BRIDGE RD)
Download Report (ARC Only) (.docx)| Extent | From I-285/EXIT 4 to GA-369/BROWNS BRIDGE RD |
| Segments | 31 |
| Corridor Length (miles) | 30.46 |
| Days Analyzed | 305 |
| Total Congestion Events | 1533 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | MCFARLAND RD/EXIT 12 | FORSYTH | 101511 | 78.10% | 05:00 PM | Tuesday | 2,944.36 | 0.45 | 1,255.55 |
| 2 | ABERNATHY RD/EXIT 5 | FULTON | 185543 | 80.30% | 05:00 PM | Tuesday | 1,086.73 | 0.42 | 503.52 |
Northbound (corridor_id=148): 31 TMCs, 30.46 total miles, average 0.98 mi/segment. Range: 0.027 mi (HAMMOND DR, seg 2) to 3.548 mi (GA-141/EXIT 13, seg 20). Most segments are well under 1.5 mi.
US-19 Southbound (GA-16 to GA-362/MERIWETHER ST)
Download Report (ARC Only) (.docx)| Extent | From GA-16 to GA-362/MERIWETHER ST |
| Segments | 4 |
| Corridor Length (miles) | 2.84 |
| Days Analyzed | 8 |
| Total Congestion Events | 16 |
| Recurring Bottlenecks Identified | 0 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
No single location stood out as a discrete recurring bottleneck on this corridor — this usually means congestion here is spread fairly evenly along the corridor's length rather than concentrated at one point (common on beltways/loops). See the segment congestion profile above for where and how much.
Southbound (corridor_id=154): 4 TMCs, 2.84 total miles, average 0.71 mi/segment. Range: 0.400 mi (GA-362/MERIWETHER ST, seg 4) to 1.082 mi (GA-16, seg 1). Most segments are well under 1.1 mi.
US-19 Southbound (GA-369/BROWNS BRIDGE RD to I-285/EXIT 4)
Download Report (ARC Only) (.docx)| Extent | From GA-369/BROWNS BRIDGE RD to I-285/EXIT 4 |
| Segments | 31 |
| Corridor Length (miles) | 30.20 |
| Days Analyzed | 294 |
| Total Congestion Events | 1221 |
| Recurring Bottlenecks Identified | 1 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | GA-140/HOLCOMB BRIDGE RD/EXIT 7 | FULTON | 163216 | 76.70% | 07:00 AM | Wednesday | 3,869.75 | 0.43 | 1,688.85 |
Southbound (corridor_id=151): 31 TMCs, 30.20 total miles, average 0.97 mi/segment. Range: 0.027 mi (I-285/EXIT 4, seg 30) to 3.466 mi (MCFARLAND RD/EXIT 12, seg 12). Most segments are well under 1.5 mi.
US-78 Eastbound (US-29/GA-8/LAWRENCEVILLE HWY to ROCKBRIDGE RD/PARK PLACE BLVD)
Download Report (ARC Only) (.docx)| Extent | From US-29/GA-8/LAWRENCEVILLE HWY to ROCKBRIDGE RD/PARK PLACE BLVD |
| Segments | 17 |
| Corridor Length (miles) | 10.13 |
| Days Analyzed | 334 |
| Total Congestion Events | 1692 |
| Recurring Bottlenecks Identified | 2 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ROCKBRIDGE RD/PARK PLACE BLVD | DEKALB | 104000 | 100.00% | 05:00 PM | Tuesday | 2,956.04 | 0.52 | 1,415.94 |
| 2 | DRUID HILLS RD | DEKALB | 50500 | 100.00% | 05:00 PM | Tuesday | 1,802.31 | 0.61 | 706.51 |
Eastbound (corridor_id=158): 17 TMCs, 10.13 total miles, average 0.60 mi/segment. Range: 0.124 mi (ROCKBRIDGE RD/PARK PLACE BLVD, seg 16) to 1.638 mi (GA-10, seg 10). Most segments are well under 0.9 mi.
US-78 Westbound (ROCKBRIDGE RD/PARK PLACE BLVD to US-29/GA-8/LAWRENCEVILLE HWY)
Download Report (ARC Only) (.docx)| Extent | From ROCKBRIDGE RD/PARK PLACE BLVD to US-29/GA-8/LAWRENCEVILLE HWY |
| Segments | 16 |
| Corridor Length (miles) | 10.17 |
| Days Analyzed | 364 |
| Total Congestion Events | 3171 |
| Recurring Bottlenecks Identified | 3 |
Severity index (below and in the chart) ranks only the discrete bottleneck locations identified on this corridor, combining how often each occurs, how large a queue it produces, and how much speed drops — a different, more complete measure than the Regional Map's color, which shows only how often each segment congests. This corridor's mini-map is colored by that same occurrence rate for comparison.
| Rank | Location | County | AADT | Occurrence | Peak Hour | Peak Day | Annual Mile-Hrs | Avg Speed Ratio | Severity |
|---|---|---|---|---|---|---|---|---|---|
| 1 | DRUID HILLS RD | DEKALB | 75200 | 100.00% | 07:00 AM | Wednesday | 3,833.26 | 0.58 | 1,594.64 |
| 2 | JEFFERSON DAVIS DR | DEKALB | 104000 | 99.70% | 07:00 AM | Wednesday | 977.41 | 0.58 | 406.36 |
| 3 | GA-236/HUGH HOWELL RD | DEKALB | 104000 | 97.50% | 07:00 AM | Wednesday | 342.97 | 0.60 | 132.42 |
Westbound (corridor_id=161): 16 TMCs, 10.17 total miles, average 0.64 mi/segment. Range: 0.121 mi (JEFFERSON DAVIS DR, seg 2) to 2.100 mi (MOUNTAIN INDUSTRIAL BLVD, seg 8). Most segments are well under 1.0 mi.
Top Arterials by Estimated Vehicle-Delay Density
Ranks named arterial roads/paths (e.g. Buford Hwy, GA-42, N Druid Hills Rd) by Estimated Annual Vehicle-Hours of Delay per mile (EAVHD density) — a congestion- CONCENTRATION measure, not total regional burden. See the Metadata tab for the full methodology, including why "Estimated," the corridor-eligibility rule, and the recurrence calculation.
Reading this map
Every TMC segment belonging to a top-20 ranked road is drawn along its real road curve (same shapefile-derived geometry as the Regional Map tab), colored by that road's Estimated Annual Vehicle-Hours of Delay (EAVHD) density class.
EAVHD Density Classes
(veh-hrs/mi, K-means)
Bubble size and color both track recurrence — how consistently each road runs congested — while position shows delay density (x) against how much speed drops (y).
Ranked Arterials (20)
| Rank | Road | Worst Point | County | Congestion Pattern (by miles) | Miles | TMCs | AADT | Speed Reduction | Recurrence | Max TMC Share of Delay | Spatial Support | Est. Annual Vehicle-Hrs Delay (total) | Est. Annual Vehicle-Hrs Delay (per mile) | Severity Index (experimental) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Briarcliff Rd / Moreland Ave (GA-42) | GA-42/BRIARCLIFF RD | DEKALB | COP-2 - PM-Dominant Congestion 33% COP-2 - PM-Dominant Congestion, 27% COP-4 - Mostly Uncongested, 26% COP-1 - Sustained All-Day Congestion, 13% COP-3 - Moderate Daytime Slowdown | 1.5 | 8 | 41,126 | 35.1% | 74.2% | 35.7% | Distributed corridor congestion | 212,582 | 141,594 | 264.1 |
| 2 | ASHFORD DUNWOODY RD | HAMMOND DR/RAVINIA DR | DEKALB | COP-2 - PM-Dominant Congestion 60% COP-2 - PM-Dominant Congestion, 40% COP-1 - Sustained All-Day Congestion | 1.2 | 6 | 52,100 | 42.5% | 97.7% | 40.7% | Distributed corridor congestion | 169,503 | 137,112 | 555.8 |
| 3 | Barrett Pkwy (GA-5-Connector) | US-41/GA-3/COBB PKWY | COBB | COP-1 - Sustained All-Day Congestion 98% COP-1 - Sustained All-Day Congestion | 4.2 | 10 | 38,400 | 51.1% | 99.1% | 40.7% | Distributed corridor congestion | 557,003 | 132,502 | 630.3 |
| 4 | WESLEY CHAPEL RD | SNAPFINGER RD/RAINBOW DR | DEKALB | COP-1 - Sustained All-Day Congestion 89% COP-1 - Sustained All-Day Congestion, 11% COP-3 - Moderate Daytime Slowdown | 1.7 | 8 | 44,980 | 47.9% | 96.9% | 31.5% | Distributed corridor congestion | 215,582 | 128,932 | 581.6 |
| 5 | Howell Mill Rd | CHATTAHOOCHEE AVE NW | FULTON | COP-1 - Sustained All-Day Congestion 48% COP-1 - Sustained All-Day Congestion, 46% COP-2 - PM-Dominant Congestion, 6% COP-3 - Moderate Daytime Slowdown | 0.9 | 8 | 18,496 | 40.3% | 86.6% | 45.9% | Distributed corridor congestion | 110,367 | 121,844 | 184.8 |
| 6 | Piedmont Rd (GA-237) | SIDNEY MARCUS BLVD | FULTON | COP-1 - Sustained All-Day Congestion 62% COP-1 - Sustained All-Day Congestion, 33% COP-2 - PM-Dominant Congestion | 1.8 | 8 | 44,100 | 47.9% | 90.8% | 28.1% | Distributed corridor congestion | 200,060 | 112,192 | 471.3 |
| 7 | TARA BLVD | US-19/US-41/OLD DIXIE RD | CLAYTON | COP-1 - Sustained All-Day Congestion 54% COP-1 - Sustained All-Day Congestion, 46% COP-2 - PM-Dominant Congestion | 0.8 | 6 | 47,400 | 42.2% | 94.5% | 49.0% | Distributed corridor congestion | 72,377 | 93,129 | 499.9 |
| 8 | GA-316 | US-29/GA-8/WINDER HWY | GWINNETT | COP-2 - PM-Dominant Congestion 75% COP-2 - PM-Dominant Congestion, 25% COP-1 - Sustained All-Day Congestion | 6.4 | 8 | 49,600 | 44.9% | 76.9% | 31.6% | Distributed corridor congestion | 531,889 | 82,782 | 275.4 |
| 9 | N DRUID HILLS RD | AZALEA CIR (ATLANTA) (WEST) | DEKALB | COP-1 - Sustained All-Day Congestion 74% COP-1 - Sustained All-Day Congestion, 26% COP-2 - PM-Dominant Congestion | 8.0 | 22 | 34,400 | 48.7% | 88.9% | 28.3% | Distributed corridor congestion | 599,873 | 74,828 | 347.7 |
| 10 | Holcomb Bridge Rd / Arnold Mill Rd (GA-140) | US-19/GA-400/TURNER MCDONALD PKWY | FULTON | COP-2 - PM-Dominant Congestion 64% COP-2 - PM-Dominant Congestion, 26% COP-1 - Sustained All-Day Congestion, 5% COP-3 - Moderate Daytime Slowdown | 31.6 | 53 | 38,242 | 37.9% | 79.8% | 15.1% | Distributed corridor congestion | 2,280,191 | 72,101 | 210.5 |
| 11 | PLEASANT HILL RD | I-85 | GWINNETT | COP-2 - PM-Dominant Congestion 53% COP-2 - PM-Dominant Congestion, 43% COP-1 - Sustained All-Day Congestion | 16.1 | 30 | 32,922 | 39.9% | 84.4% | 9.8% | Distributed corridor congestion | 1,131,522 | 70,248 | 246.4 |
| 12 | ABERNATHY RD | MT VERNON HWY | FULTON | COP-2 - PM-Dominant Congestion 46% COP-2 - PM-Dominant Congestion, 39% COP-1 - Sustained All-Day Congestion, 15% COP-3 - Moderate Daytime Slowdown | 4.5 | 20 | 27,399 | 40.5% | 81.2% | 18.2% | Distributed corridor congestion | 296,365 | 66,462 | 185.3 |
| 13 | MOUNTAIN INDUSTRIAL BLVD | GA-78/GA-410/STONE MOUNTAIN FWY | DEKALB | COP-2 - PM-Dominant Congestion 60% COP-2 - PM-Dominant Congestion, 39% COP-1 - Sustained All-Day Congestion | 7.0 | 12 | 32,800 | 44.7% | 82.6% | 21.9% | Distributed corridor congestion | 441,140 | 63,229 | 249.6 |
| 14 | Peachtree Rd / Peachtree Industrial Blvd (GA-141) | STATE BRIDGE RD | FULTON | COP-2 - PM-Dominant Congestion 66% COP-2 - PM-Dominant Congestion, 18% COP-1 - Sustained All-Day Congestion, 15% COP-3 - Moderate Daytime Slowdown | 46.5 | 75 | 41,800 | 35.7% | 69.6% | 6.9% | Distributed corridor congestion | 2,676,416 | 57,516 | 166.0 |
| 15 | GA-11 | US-29 BUS/GA-8/GA-81/W MAY ST | BARROW | COP-1 - Sustained All-Day Congestion 60% COP-1 - Sustained All-Day Congestion, 20% COP-3 - Moderate Daytime Slowdown, 17% COP-2 - PM-Dominant Congestion | 8.1 | 15 | 29,183 | 41.7% | 84.3% | 16.7% | Distributed corridor congestion | 449,024 | 55,736 | 216.9 |
| 16 | WINDWARD PKY | NORTH POINT PKWY | FULTON | COP-2 - PM-Dominant Congestion 98% COP-2 - PM-Dominant Congestion | 0.8 | 6 | 18,900 | 39.9% | 89.1% | 45.9% | Distributed corridor congestion | 42,001 | 55,453 | 171.9 |
| 17 | PERIMETER CTR | MOUNT VERNON HWY NE | FULTON | COP-1 - Sustained All-Day Congestion 100% COP-1 - Sustained All-Day Congestion | 1.2 | 4 | 18,106 | 48.8% | 99.6% | 53.8% | Distributed corridor congestion | 68,731 | 55,081 | 260.6 |
| 18 | CAMP CREEK PKY | I-285 | FULTON | COP-3 - Moderate Daytime Slowdown 45% COP-3 - Moderate Daytime Slowdown, 36% COP-2 - PM-Dominant Congestion, 10% COP-4 - Mostly Uncongested, 9% COP-1 - Sustained All-Day Congestion | 9.7 | 22 | 50,400 | 27.4% | 55.3% | 17.9% | Distributed corridor congestion | 533,070 | 54,702 | 92.1 |
| 19 | GA-11-BR | GA-11/GA-369/JESSE JEWELL PKWY | HALL | COP-2 - PM-Dominant Congestion 68% COP-2 - PM-Dominant Congestion, 32% COP-3 - Moderate Daytime Slowdown | 1.9 | 9 | 23,700 | 36.3% | 73.9% | 36.9% | Distributed corridor congestion | 103,910 | 53,905 | 108.3 |
| 20 | Roswell Rd (US 19/GA-9) | GA-13 (NORTH) | FULTON | COP-2 - PM-Dominant Congestion 40% COP-2 - PM-Dominant Congestion, 37% COP-3 - Moderate Daytime Slowdown, 21% COP-1 - Sustained All-Day Congestion | 20.2 | 60 | 30,500 | 31.7% | 64.9% | 10.3% | Distributed corridor congestion | 1,076,465 | 53,307 | 104.6 |
Rank stability (validation output): EAVHD density was recomputed under 3 alternate hourly-distribution scenarios and compared to the ranking above — see the Metadata tab for the full methodology.
- vs. the flatter scenario: Spearman rank correlation 1.00, 20/20 of the same roads remain in the top 20
- vs. the synthetic commuter-peaked scenario: Spearman rank correlation 1.00, 19/20 of the same roads remain in the top 20
- vs. the uniform scenario: Spearman rank correlation 1.00, 19/20 of the same roads remain in the top 20
Where Within Each Corridor Is Delay Concentrated?
Each ranked road's own Estimated Annual Vehicle-Hours of Delay (EAVHD), broken down by local intersection/influence-area group (TMCs sharing the same nearest cross-street) rather than by raw TMC — some TMCs run only hundredths of a mile, too short to be a meaningful planning unit on their own. Contribution % is additive across a corridor's groups, same as EAVHD itself: TMC delay sums to its group, and groups sum to the corridor. Expand a road to see which intersection is driving its rank.
#1Briarcliff Rd / Moreland Ave (GA-42) 141,594 veh-hrs/mi
#2ASHFORD DUNWOODY RD 137,112 veh-hrs/mi
#3Barrett Pkwy (GA-5-Connector) 132,502 veh-hrs/mi
#4WESLEY CHAPEL RD 128,932 veh-hrs/mi
#5Howell Mill Rd 121,844 veh-hrs/mi
#6Piedmont Rd (GA-237) 112,192 veh-hrs/mi
#7TARA BLVD 93,129 veh-hrs/mi
#8GA-316 82,782 veh-hrs/mi
#9N DRUID HILLS RD 74,828 veh-hrs/mi
#10Holcomb Bridge Rd / Arnold Mill Rd (GA-140) 72,101 veh-hrs/mi
#11PLEASANT HILL RD 70,248 veh-hrs/mi
#12ABERNATHY RD 66,462 veh-hrs/mi
#13MOUNTAIN INDUSTRIAL BLVD 63,229 veh-hrs/mi
#14Peachtree Rd / Peachtree Industrial Blvd (GA-141) 57,516 veh-hrs/mi
#15GA-11 55,736 veh-hrs/mi
#16WINDWARD PKY 55,453 veh-hrs/mi
#17PERIMETER CTR 55,081 veh-hrs/mi
#18CAMP CREEK PKY 54,702 veh-hrs/mi
#19GA-11-BR 53,905 veh-hrs/mi
#20Roswell Rd (US 19/GA-9) 53,307 veh-hrs/mi
hotspot-onlyBuford Hwy
hotspot-onlyWhitlock Ave / North Marietta Pkwy / South Marietta Pkwy (GA-120 Alt)
hotspot-onlyScenic Hwy / Braselton Hwy (GA-124)
hotspot-onlyBuford Hwy / Buford–Spring Connector (GA-13)
hotspot-onlyGA-138
hotspot-onlyCumming Hwy / Canton Hwy (GA-20)
hotspot-onlyGA-54
hotspot-onlyRoswell Rd (GA-9)
hotspot-onlyGA-92
Top Localized Arterial Bottlenecks — Highest 1-Mile EAVHD Density
Identifies severe localized arterial bottlenecks that may be diluted in whole-corridor averages. Roads are ranked by the highest EAVHD density within any 1-mile window. The 0.5-mile measure provides a sensitivity check, while % Severe Miles indicates whether congestion is localized or widespread along the corridor. Freeway-interchange locations are identified from the actual cross-street name, not inferred from the arterial name. Highlighted rows are roads outside the corridor-density top 20.
| Hotspot Rank | Road | County | Direction | Hotspot Location | Max 1-mi EAVHD Density | Max 0.5-mi EAVHD Density | % Severe Miles | Corridor Rank | Corridor EAVHD Density |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Cumming Hwy / Canton Hwy (GA-20) | HENRY | SOUTHBOUND | BOGAN RD | 267,953 | 262,619 | 37% | #45 | 30,783 |
| 2 | Holcomb Bridge Rd / Arnold Mill Rd (GA-140) | FULTON | SOUTHBOUND | US-19/GA-400/TURNER MCDONALD PKWY Freeway Interchange | 248,533 | 248,533 | 87% | #10 | 72,101 |
| 3 | Briarcliff Rd / Moreland Ave (GA-42) | DEKALB | SOUTHBOUND | GA-42/BRIARCLIFF RD | 242,834 | 242,834 | 100% | #1 | 141,594 |
| 4 | Buford Hwy / Buford–Spring Connector (GA-13) | FULTON | SOUTHBOUND | SIDNEY MARCUS BLVD | 231,447 | 231,447 | 100% | #29 | 40,195 |
| 5 | Scenic Hwy / Braselton Hwy (GA-124) | GWINNETT | SOUTHBOUND | US-78/GA-10/MAIN ST | 222,754 | 222,754 | 43% | #24 | 47,398 |
| 6 | N DRUID HILLS RD | DEKALB | SOUTHBOUND | AZALEA CIR (ATLANTA) (WEST) | 210,739 | 210,739 | 100% | #9 | 74,828 |
| 7 | Piedmont Rd (GA-237) | FULTON | NORTHBOUND | SIDNEY MARCUS BLVD | 188,674 | 188,674 | 91% | #6 | 112,192 |
| 8 | Barrett Pkwy (GA-5-Connector) | COBB | SOUTHBOUND | US-41/GA-3/COBB PKWY | 181,602 | 181,602 | 100% | #3 | 132,502 |
| 9 | Buford Hwy | FULTON | SOUTHBOUND | GA-154/MEMORIAL DR | 171,764 | 172,705 | 34% | #33 | 35,299 |
| 10 | PLEASANT HILL RD | GWINNETT | SOUTHBOUND | I-85 Freeway Interchange | 165,039 | 200,384 | 73% | #11 | 70,248 |
| 11 | GA-138 | ROCKDALE | EASTBOUND | US-278/GA-20/GA-12 | 162,894 | 162,894 | 37% | #59 | 20,730 |
| 12 | ASHFORD DUNWOODY RD | DEKALB | SOUTHBOUND | HAMMOND DR/RAVINIA DR | 160,571 | 160,571 | 100% | #2 | 137,112 |
| 13 | GA-92 | CHEROKEE | SOUTHBOUND | GA-9/GA-140/GA-120/ALPHARETTA ST | 158,423 | 158,423 | 44% | #49 | 25,684 |
| 14 | Whitlock Ave / North Marietta Pkwy / South Marietta Pkwy (GA-120 Alt) | COBB | WESTBOUND | CHURCH ST | 153,800 | 153,800 | 62% | #36 | 34,122 |
| 15 | Roswell Rd (GA-9) | FULTON | SOUTHBOUND | I-285 Freeway Interchange | 151,457 | 160,725 | 27% | #41 | 31,902 |
| 16 | Peachtree Rd / Peachtree Industrial Blvd (GA-141) | FULTON | SOUTHBOUND | GA-9/ROSWELL RD/W PACES FERRY RD NW | 150,200 | 150,200 | 74% | #14 | 57,516 |
| 17 | WESLEY CHAPEL RD | DEKALB | SOUTHBOUND | SNAPFINGER RD/RAINBOW DR | 146,276 | 149,120 | 100% | #4 | 128,932 |
| 18 | Roswell Rd (US 19/GA-9) | FULTON | NORTHBOUND | I-285 Freeway Interchange | 145,145 | 155,171 | 57% | #20 | 53,307 |
| 19 | Howell Mill Rd | FULTON | NORTHBOUND | I-75 Freeway Interchange | 139,350 | 139,350 | 83% | #5 | 121,844 |
| 20 | GA-54 | FAYETTE | SOUTHBOUND | GA-74/JOEL COWAN PKWY | 133,656 | 134,011 | 16% | #42 | 31,851 |