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Traffic heat map of Washington County, Tennessee: 413 miles of roads shaded from blue (light) to red (heavy traffic), busiest on James H. Quillen Parkway

Washington County, Tennessee Traffic Counts

How busy are the roads of Washington County, Tennessee? We measure 413 road miles, divided into 8,315 segments, with multi-sourced, cross-verified mobile and sensor data. Its busiest road, James H. Quillen Parkway, carries 46,102 vehicles a day, 7.4 times the average road. The breakdown below covers volume, trucks, congestion and driver profiles for retailers, logistics planners and engineers.
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 Washington County, Tennessee

Traffic

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

vehicles per day6,225
Trucks

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

7.2%
Average travel time

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

32.0 min
Congestion ratio

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

15.0%
Drivers’ average age

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

48.6 yrs
Drivers’ average income

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

$66,735

The average monitored road in Washington County, Tennessee carries 6,225 vehicles per day. Across its 413 miles of monitored roads, that adds up to 2,853,792 vehicle-miles traveled per day (≈1.0 billion per year). Trucks are a smaller part of the mix than across Tennessee: 7.2% against 11.3%.

Busier roads than 81% of counties in Tennessee

At 6,225 vehicles per day, the average road in Washington carries somewhat less traffic than the state average of 7,251 (14% less) - a factor worth weighing in site selection and logistics planning. Network-wide, Washington accounts for about 1.6% of Tennessee's statewide total of vehicle-miles. 81% of counties in Tennessee see less traffic than Washington's 6,225 vehicles per day.

The average trip takes 32.0 minutes, on par with the state level. Its average travel time of 32.0 minutes is shorter than 61% of counties in Tennessee.

Congestion is somewhat lower than the state level, at a ratio of 15.0% (7% lower).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Washington County, Tennessee

Trafficvehicles per day16,605
Trucks9.4%
Average travel time34.8 min
Congestion ratio28.1%
Drivers’ average age48.9 yrs
Drivers’ average income$64,697

Highways carry more than half of all travel in Washington County, Tennessee (58% of vehicle-miles). The average highway carries 16,605 vehicles per day, 237% more than the average non-highway road in the same area, which carries 4,928 vehicles per day.

With 26% of the road miles (106 miles in 924 segments), highways punch above their length, carrying 1,667,152 vehicle-miles traveled per day (≈609 million per year).

80% of counties in Tennessee move less traffic on their highways.

Lower highway truck share than 89% of counties in Tennessee

The concentration of trucks on highways (9.4%) is 40% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

By truck concentration, highways here trail 89% of counties in Tennessee. By raw truck volume, Washington carries more highway trucks than 51% of counties in Tennessee.

non-highway traffic icon

Non-highway Traffic in Washington County, Tennessee

Trafficvehicles per day4,928
Trucks4.2%
Average travel time31.6 min
Congestion ratio13.4%
Drivers’ average age48.2 yrs
Drivers’ average income$69,408

Local roads carry a significant share of travel in Washington County, Tennessee: 42% of all vehicle-miles. On the average non-highway road, that comes to 4,928 vehicles per day.

Spread over 307 miles and 7,391 segments, 74% of the road network, local roads carry a lighter load per mile: 1,186,640 vehicle-miles traveled per day (≈433 million per year). About 1 in 24 vehicles on non-highway roads is a truck (4.2%).

Drivers from higher-income areas than 74% of counties in Tennessee

Non-highway roads carry a truck concentration that's 55% lower than the highway network.

Non-highway congestion (13.4%) runs slightly lower than the state level (13% lower).

Washington's average driver income is higher than 74% of counties in Tennessee. Washington's median driver age is higher than 54% of counties in Tennessee.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Washington County, Tennessee, the peak hour concentrates about 7% of the day's traffic.

Washington County vs. Tennessee Traffic Comparison

The highway truck share sets Washington County apart: 40% below the Tennessee average. Its truck share is also 36% below.

MetricWashington CountyTennessee averageDifference
Traffic6,2257,251-14.1%
Truck % (Total Traffic)7.2%11.3%-36.2%
Truck % (Highway)9.4%15.6%-39.9%
Avg. Travel Time32.0 min32.1 min-0.3%

How Washington County compares

Washington County against nearby counties

Nothing in this table sets Washington County sharply apart from the 4 areas nearest to it, though it has the busiest roads of the five. Bigger and busier at once: more road than the areas around it and heavier traffic on it, which makes it the centre of gravity for travel in this part of the map.

Washington County and the 4 nearest county-level areas by centroid distance, with the Tennessee average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Washington County6,2257.2%2,853,79232.0 min15.0%
Sullivan County, Tennessee6,1739.3%3,795,25236.1 min13.7%
Unicoi County, Tennessee3,27211.7%486,43433.0 min9.3%
Carter County, Tennessee5,8375.8%1,022,62529.6 min15.8%
Greene County, Tennessee3,83015.8%2,298,83533.1 min10.8%
Tennessee average7,25111.3%N/A32.1 min16.1%

Washington County ranked within Tennessee

Washington County sits in the bottom quarter of the Tennessee field on truck share on highways, at #77 of 86.

Washington County ranked among 95 county-level areas in Tennessee (1 = highest); measures without data in every county rank a smaller field, down to 86.
MeasureWashington CountyTennessee rank
Traffic volume (AADT)6,225#19 of 95
Highway vehicle-miles per day1,667,152#18 of 86
Truck share on highways9.4%#77 of 86
Highway trucks per day1,558#43 of 86
Average travel time32.0 min#57 of 95
Average driver income$66,735#25 of 95
Average driver age48.6 yrs#44 of 95

Washington County ranks #19 of 95 on average daily traffic volume but #77 of 86 on truck share on highways - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Washington County, Tennessee

The three busiest roads in Washington County average 36,905 vehicles a day, 5.9 times the county average of 6,225 across all its monitored roads.

James H. Quillen Parkway is the busiest road, at 46,102 vehicles a day, 3,698 of them trucks (8.0%). I 81 carries the most trucks, 9,885 a day (32.7% of its traffic), although it ranks #4 for all traffic.

Trucks make up 32.7% of traffic on I 81, against 7.2% across all roads in the county.

I 81 carries longer journeys than most roads here, with a median trip of 57.0 minutes against 32.0 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1James H. Quillen ParkwayMotorway · 46,102vehicles3,698trucks · 8.0%
Road class
Motorway
Congestion ratio
45.9%
Median trip time
34.7 min
Drivers’ median age
49.6 yrs
Drivers’ average income
$66,636

James H. Quillen Parkway is one of the more congested roads here: trips take 46% longer than at free-flow speed, against 15% county-wide.

2State of Franklin RoadTrunk road · 34,191vehicles1,448trucks · 4.2%
Road class
Trunk road
Congestion ratio
32.8%
Median trip time
34.0 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$63,451

State of Franklin Road carries 5.5 times the county average on its busiest stretch, where the median trip lasts 34.0 minutes.

3Roan StreetTrunk road · 30,421vehicles1,390trucks · 4.6%
Road class
Trunk road
Congestion ratio
38.8%
Median trip time
32.4 min
Drivers’ median age
48.7 yrs
Drivers’ average income
$70,730

Delays build on Roan Street: its congestion ratio of 39% over free-flow time is well above the county's 15%.

4I 81Motorway · 30,262vehicles9,885trucks · 32.7%
Road class
Motorway
Congestion ratio
37.9%
Median trip time
57.0 min
Drivers’ median age
50.9 yrs
Drivers’ average income
$63,841

I 81 peaks at 30,262 vehicles a day, 4.9 times the county average; trucks are 32.7% of it, above the county-wide 7.2%.

5Jackson BoulevardTrunk road · 28,015vehicles1,536trucks · 5.5%
Road class
Trunk road
Congestion ratio
33.6%
Median trip time
34.0 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$67,519

Jackson Boulevard carries 4.5 times the county average at its busiest, 1,536 of them trucks (5.5%, below the county-wide 7.2%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 81Motorway · #4 by traffic30,262vehicles9,885trucks · 32.7%
2James H. Quillen ParkwayMotorway · #1 by traffic46,102vehicles3,698trucks · 8.0%
3US 321Motorway · 25,521vehicles1,666trucks · 6.5%
Road class
Motorway
Congestion ratio
24.2%
Median trip time
33.0 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$55,761

US 321 carries 4.1 times the county average on its busiest stretch, where the median trip lasts 33.0 minutes.

4Jackson BoulevardTrunk road · #5 by traffic28,015vehicles1,536trucks · 5.5%
5State of Franklin RoadTrunk road · #2 by traffic34,191vehicles1,448trucks · 4.2%
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

WashingtonDepartment 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 Washington County

The same traffic breakdown for the areas closest to Washington County, Tennessee.

Need segment-level traffic data?

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