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Traffic heat map of Asotin County, Washington: 96 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Scenic Way and 15th Street

Asotin County, Washington Traffic Counts

Trips here are the shortest of any county in Washington, a median 28.8 minutes. This page breaks down traffic in Asotin County, Washington across 96 miles of monitored roads split into 1,274 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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Total Traffic Volume & Performance in Asotin County, Washington

Traffic

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

vehicles per day3,306
Trucks

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

5.7%
Average travel time

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

28.8 min
Congestion ratio

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

12.3%
Drivers’ average age

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

52.0 yrs
Drivers’ average income

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

$72,733

Our data shows 3,306 vehicles per day on the average road in Asotin County, Washington, and 200,356 vehicle-miles traveled per day (≈73.1 million per year) across its 96 miles of monitored roads. About 1 in 18 vehicles is a truck, fewer than the 1 in 14 across Washington.

The shortest trips of any county in Washington

At 3,306 vehicles per day, the average monitored road in Asotin carries 55% less traffic than the state average of 7,322, suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 0.1% of Washington's statewide total of vehicle-miles. By volume, Asotin's 3,306 vehicles per day trails 63% of counties in Washington.

At 28.8 minutes, the average travel time is 13% lower than the state level. It also posts the lowest average travel time in Washington, at 28.8 minutes.

At 38% lower than the state level, the 12.3% congestion ratio signals smoother traffic flow - fewer delays make delivery windows more reliable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Asotin County, Washington

Trafficvehicles per day6,541
Trucks9.9%
Average travel time31.9 min
Congestion ratio18.7%
Drivers’ average age51.4 yrs
Drivers’ average income$67,606

Highways carry a smaller share of travel in Asotin County, Washington, 18% of vehicle-miles; most driving happens on local roads. The average highway carries 6,541 vehicles per day, 118% more than the average non-highway road in the same area, which carries 3,006 vehicles per day.

Highways make up 13% of the monitored road miles (12 miles, 108 segments), so they carry more than their share: 35,227 vehicle-miles traveled per day (≈12.9 million per year).

Fewer highway trucks than 94% of counties in Washington

Highway truck concentration here (9.9%) closely tracks the state average for similar road classifications. The highway traffic mix is typical for Washington: neither freight- nor commuter-dominated.

By truck concentration, highways here trail 52% of counties in Washington. Asotin's highway truck count is lower than 94% of counties in Washington, at roughly 648 trucks per day.

non-highway traffic icon

Non-highway Traffic in Asotin County, Washington

Trafficvehicles per day3,006
Trucks4.8%
Average travel time28.4 min
Congestion ratio11.7%
Drivers’ average age52.1 yrs
Drivers’ average income$73,357

Local roads carry the vast majority of travel in Asotin County, Washington, 82% of all vehicle-miles. The average non-highway road carries 3,006 vehicles per day.

Their share of road miles is similar, 87% (84 miles in 1,166 segments), carrying 165,129 vehicle-miles traveled per day (≈60.3 million per year). Trucks make up 4.8% of non-highway traffic, about 1 in 21 vehicles.

Local congestion 40% below the Washington average

The concentration of trucks on non-highway roads is 52% lower than on highways.

The non-highway congestion ratio of 11.7% is 40% lower than the state level, suggesting more efficient local mobility than the state average.

66% of counties in Washington see higher average driver income among trip origins than Asotin. The driver population here skews older than 68% of counties in Washington.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Asotin County vs. Washington Traffic Comparison

Of the four measures, average daily traffic per road differs most: Asotin County runs 55% below the Washington average. Its truck share is also 20% below.

MetricAsotin CountyWashington averageDifference
Traffic3,3067,322-54.9%
Truck % (Total Traffic)5.7%7.1%-20.1%
Truck % (Highway)9.9%9.5%+4.1%
Avg. Travel Time28.8 min33.2 min-13.3%

How Asotin County compares

Asotin County has the lowest truck share of its nearby counties

Against the 4 nearest areas, Asotin County sees 28.9% shorter typical trips; it has the second busiest roads of the five. The same kind of road, just less of it: traffic per road matches the areas around it while the network itself is smaller.

Asotin County and the 4 nearest county-level areas by centroid distance, with the Washington average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Asotin County3,3065.7%200,35628.8 min12.3%
Nez Perce County, Idaho8,0986.4%1,053,61432.9 minN/A
Garfield County, Washington1,87313.2%70,25157.5 min5.6%
Columbia County, Washington2,03511.1%78,69744.4 min7.2%
Lewis County, Idaho1,91610.2%116,10127.0 minN/A
Washington average7,3227.1%N/A33.2 min19.9%

Asotin County ranked within Washington

No county-level area in Washington records a lower highway travel volume and average travel time than Asotin County.

Asotin County ranked among 39 county-level areas in Washington (1 = highest); measures without data in every county rank a smaller field, down to 33.
MeasureAsotin CountyWashington rank
Traffic volume (AADT)3,306#25 of 39
Highway vehicle-miles per day35,227#33 of 33
Truck share on highways9.9%#17 of 33
Highway trucks per day648#31 of 33
Average travel time28.8 min#39 of 39
Average driver income$72,733#26 of 39
Average driver age52.0 yrs#13 of 39

Asotin County ranks #13 of 39 on average driver age but #33 of 33 on highway travel volume - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Asotin County, Washington

On their busiest stretches, the three busiest roads in Asotin County carry 11,422 vehicles a day on average, 3.5 times the typical road in the county (3,306).

Scenic Way is the busiest road, at 14,430 vehicles a day, 549 of them trucks (3.8%). It tops the truck ranking too, with the most trucks.

Trucks make up 14.9% of traffic on Inland Empire Highway, against 5.7% across all roads in the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Scenic WaySecondary road · 14,430vehicles549trucks · 3.8%
Road class
Secondary road
Congestion ratio
33.5%
Median trip time
28.1 min
Drivers’ median age
51.4 yrs
Drivers’ average income
$81,531

Delays build on Scenic Way: its congestion ratio of 34% over free-flow time is well above the county's 12%.

215th StreetPrimary road · 10,912vehicles512trucks · 4.7%
Road class
Primary road
Congestion ratio
35.6%
Median trip time
31.9 min
Drivers’ median age
52.2 yrs
Drivers’ average income
$75,047

Travel on 15th Street's busiest stretch runs 36% over free-flow time, against 12% across the county, so expect slower peak hours.

36th StreetPrimary road · 8,924vehicles300trucks · 3.4%
Road class
Primary road
Congestion ratio
29.1%
Median trip time
27.4 min
Drivers’ median age
51.2 yrs
Drivers’ average income
$69,464

6th Street carries 2.7 times the county average at its busiest, 300 of them trucks (3.4%, below the county-wide 5.7%).

4Appleside BoulevardSecondary road · 8,388vehicles374trucks · 4.5%
Road class
Secondary road
Congestion ratio
23.0%
Median trip time
25.8 min
Drivers’ median age
51.7 yrs
Drivers’ average income
$81,938

Appleside Boulevard carries 2.5 times the county average on its busiest stretch, where the median trip lasts 25.8 minutes.

55th StreetSecondary road · 7,480vehicles227trucks · 3.0%
Road class
Secondary road
Congestion ratio
21.1%
Median trip time
27.4 min
Drivers’ median age
52.5 yrs
Drivers’ average income
$69,013

At 2.3 times the county average, 5th Street draws drivers from neighborhoods averaging $69,013 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Scenic WaySecondary road · #1 by traffic14,430vehicles549trucks · 3.8%
215th StreetPrimary road · #2 by traffic10,912vehicles512trucks · 4.7%
3Inland Empire HighwayTrunk road · 2,886vehicles430trucks · 14.9%
Road class
Trunk road
Congestion ratio
6.6%
Median trip time
35.6 min
Drivers’ median age
58.2 yrs
Drivers’ average income
$73,975

Even at its busiest, Inland Empire Highway carries 13% less than the county average; trucks are 14.9% of it, above the county-wide 5.7%.

4Bridge StreetTrunk road · 6,338vehicles374trucks · 5.9%
Road class
Trunk road
Congestion ratio
24.0%
Median trip time
31.9 min
Drivers’ median age
51.4 yrs
Drivers’ average income
$66,260

Bridge Street peaks at 6,338 vehicles a day, 92% more than the county average; trucks are 5.9% of it, in line with the county-wide 5.7%.

5Appleside BoulevardSecondary road · #4 by traffic8,388vehicles374trucks · 4.5%
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

AsotinDepartment 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 Asotin County

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

Need segment-level traffic data?

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