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Traffic heat map of Durham County, North Carolina: 661 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 40 and I 85

Durham County, North Carolina Traffic Counts

Traffic analytics for Durham County, North Carolina, calculated from real-world mobile and sensor networks on 18,715 road segments (661 road miles, about 187 ft each). It is one of the top 5 counties in North Carolina for highway travel volume. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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total traffic icon

Total Traffic Volume & Performance in Durham County, North Carolina

Traffic

The average number of vehicles that travel each day over any road in the road network.

vehicles per day9,099
Trucks

The percentage of the total traffic volume composed of heavy vehicles.

7.5%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

32.4 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

20.9%
Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

41.7 yrs
Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$93,286

A typical monitored road in Durham County, North Carolina sees 9,099 vehicles per day, while its 661 miles of monitored roads together handle 8,155,639 vehicle-miles traveled per day (≈3.0 billion per year). About 1 in 13 vehicles is a truck, in line with North Carolina (8.7%).

Busier roads than 93% of counties in North Carolina

Durham sees 44% higher average daily traffic volume than the state average (9,099 vehicles per day against 6,332), suggesting more demand on each road - a busier backdrop for retail sites, at the cost of slower access. Across the whole network, that travel is about 3.0% of North Carolina's statewide total. Durham carries more traffic than 93% of counties in North Carolina.

The average trip takes 32.4 minutes, on par with the state level. On travel time, Durham runs longer than 54% of counties in North Carolina.

The congestion ratio of 20.9% runs slightly higher than the state level (12% higher) - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Durham County, North Carolina

Trafficvehicles per day26,223
Trucks9.7%
Average travel time40.4 min
Congestion ratio39.2%
Drivers’ average age42.1 yrs
Drivers’ average income$92,365

A little more than half of the driving in Durham County, North Carolina happens on highways: 57% of all vehicle-miles. The average highway carries 26,223 vehicles per day, 247% more than the average non-highway road in the same area, which carries 7,558 vehicles per day.

Highways make up 23% of the monitored road miles (155 miles, 1,545 segments), so they carry more than their share: 4,650,998 vehicle-miles traveled per day (≈1.7 billion per year).

No more than 4 other counties in North Carolina move more traffic on their highways.

More highway trucks than 89% of counties in North Carolina

At 9.7%, highway truck share is 19% lower than the state average. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

69% of counties in North Carolina see a higher highway truck share than Durham's 9.7%. 89% of counties in North Carolina see fewer highway trucks per day than Durham's roughly 2,551.

non-highway traffic icon

Non-highway Traffic in Durham County, North Carolina

Trafficvehicles per day7,558
Trucks4.5%
Average travel time31.6 min
Congestion ratio19.2%
Drivers’ average age40.5 yrs
Drivers’ average income$94,383

A significant share of driving in Durham County, North Carolina, 43% of vehicle-miles, happens on local roads. On the average non-highway road, that comes to 7,558 vehicles per day.

Spread over 506 miles and 17,170 segments, 77% of the road network, local roads carry a lighter load per mile: 3,504,641 vehicle-miles traveled per day (≈1.3 billion per year). About 1 in 22 vehicles on non-highway roads is a truck (4.5%).

Younger drivers than 95% of counties in North Carolina

The concentration of trucks on non-highway roads is 54% lower than on highways.

Non-highway congestion (19.2%) runs slightly higher than the state level (9% higher).

Trip origins here have higher average income than 94% of counties in North Carolina. 95% of counties in North Carolina have an older driver population than Durham.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Durham County, North Carolina, the peak hour concentrates about 7% of the day's traffic.

Durham County vs. North Carolina Traffic Comparison

Durham County's biggest difference from the North Carolina average is its average daily traffic per road, 44% above it. Its highway truck share, by contrast, is 19% below.

MetricDurham CountyNorth Carolina averageDifference
Traffic9,0996,332+43.7%
Truck % (Total Traffic)7.5%8.7%-14.5%
Truck % (Highway)9.7%12.1%-19.5%
Avg. Travel Time32.4 min32.3 min+0.2%

How Durham County compares

Durham County against nearby counties

Set against the average of the 4 areas nearest to it, Durham County carries 71.6% more traffic on a typical road and is 38.6% more congested; it has the second busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

Durham County and the 4 nearest county-level areas by centroid distance, with the North Carolina average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Durham County9,0997.5%8,155,63932.4 min20.9%
Orange County, North Carolina5,28610.1%4,407,04732.7 min14.6%
Wake County, North Carolina9,1716.2%26,545,02831.9 min24.8%
Granville County, North Carolina3,72815.5%1,794,63030.4 min12.3%
Person County, North Carolina3,0296.8%722,15128.8 min8.5%
North Carolina average6,3328.7%N/A32.3 min18.6%

Durham County ranked within North Carolina

Durham County sits in the top quarter of the North Carolina field on highway travel volume, at #5 of 97.

Durham County ranked among 100 county-level areas in North Carolina (1 = highest); measures without data in every county rank a smaller field, down to 97.
MeasureDurham CountyNorth Carolina rank
Traffic volume (AADT)9,099#8 of 100
Highway vehicle-miles per day4,650,998#5 of 97
Truck share on highways9.7%#67 of 97
Highway trucks per day2,551#12 of 97
Average travel time32.4 min#47 of 100
Average driver income$93,286#7 of 100
Average driver age41.7 yrs#95 of 100

The two ends of this table sit far apart: #5 of 97 on highway travel volume, against #95 of 100 on average driver age.

Busiest roads in Durham County, North Carolina

The three busiest roads in Durham County average 89,348 vehicles a day, 9.8 times the county average of 9,099 across all its monitored roads.

I 40 leads with 122,865 vehicles a day, 12,528 of them trucks (10.2%). It also carries the most trucks.

Freight stands out on Miami Boulevard: trucks are 15.0% of the traffic there, against 7.5% county-wide.

I 40 carries longer journeys than most roads here, with a median trip of 45.9 minutes against 32.4 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 40Motorway · 122,865vehicles12,528trucks · 10.2%
Road class
Motorway
Congestion ratio
78.5%
Median trip time
45.9 min
Drivers’ median age
41.4 yrs
Drivers’ average income
$100,114

Travel on I 40's busiest stretch runs 79% over free-flow time, against 21% across the county, so expect slower peak hours.

2I 85Motorway · 86,398vehicles7,043trucks · 8.2%
Road class
Motorway
Congestion ratio
39.6%
Median trip time
39.4 min
Drivers’ median age
43.8 yrs
Drivers’ average income
$86,043

I 85 is a trunk route for the county, carrying 9.5 times the county average on its busiest stretch; trucks are 8.2% of it, above the county-wide 7.5%.

3Durham FreewayMotorway · 58,782vehicles4,654trucks · 7.9%
Road class
Motorway
Congestion ratio
54.1%
Median trip time
35.4 min
Drivers’ median age
41.1 yrs
Drivers’ average income
$96,459

Durham Freeway carries 6.5 times the county average at its busiest, 4,654 of them trucks (7.9%, above the county-wide 7.5%).

4US 70Motorway · 55,927vehicles3,932trucks · 7.0%
Road class
Motorway
Congestion ratio
68.2%
Median trip time
37.1 min
Drivers’ median age
43.6 yrs
Drivers’ average income
$86,871

US 70 is one of the more congested roads here: trips take 68% longer than at free-flow speed, against 21% county-wide.

5US 15Motorway · 54,026vehicles2,297trucks · 4.2%
Road class
Motorway
Congestion ratio
50.0%
Median trip time
34.7 min
Drivers’ median age
41.2 yrs
Drivers’ average income
$90,617

US 15 carries 5.9 times the county average on its busiest stretch, where the median trip lasts 34.7 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 40Motorway · #1 by traffic122,865vehicles12,528trucks · 10.2%
2I 85Motorway · #2 by traffic86,398vehicles7,043trucks · 8.2%
3Miami BoulevardMotorway · 42,214vehicles6,316trucks · 15.0%
Road class
Motorway
Congestion ratio
41.1%
Median trip time
38.3 min
Drivers’ median age
43.1 yrs
Drivers’ average income
$82,061

On its busiest stretch, Miami Boulevard carries 4.6 times the county average; trucks are 15.0% of it, above the county-wide 7.5%.

4I 885Motorway · 53,953vehicles6,067trucks · 11.2%
Road class
Motorway
Congestion ratio
42.5%
Median trip time
38.2 min
Drivers’ median age
43.6 yrs
Drivers’ average income
$85,507

At 5.9 times the county average, I 885 draws drivers from neighborhoods averaging $85,507 in household income.

5Durham FreewayMotorway · #3 by traffic58,782vehicles4,654trucks · 7.9%
How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

Data Sources & Methodology

The data presented on this page is derived from TrafficZoom's proprietary analytics platform, which aggregates and normalizes information from multiple sources, including:

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases

Public traffic count programs published by the

DurhamDepartment of Transportation

Demographic Baseline for O-D Modeling

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
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Data current as of:
Q3 2026

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Counties near Durham County

The same traffic breakdown for the areas closest to Durham County, North Carolina.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.