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Traffic heat map of Benton County, Washington: 899 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 182 and Lewis and Clark Trail

Benton County, Washington Traffic Counts

Our Benton County, Washington traffic data covers 12,884 road segments over 899 road miles, with an average segment of just 369 ft. Its busiest road, I 182, carries 62,596 vehicles a day, 10.2 times the average road. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 Benton County, Washington

Traffic

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

vehicles per day6,112
Trucks

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

8.2%
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.

18.9%
Drivers’ average age

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

43.5 yrs
Drivers’ average income

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

$95,880

Our data shows 6,112 vehicles per day on the average road in Benton County, Washington, and 4,794,576 vehicle-miles traveled per day (≈1.8 billion per year) across its 899 miles of monitored roads. Trucks are 8.2% of traffic, more than the 7.1% across Washington.

Busier roads than 76% of counties in Washington

At 6,112 vehicles per day, the average monitored road in Benton carries 17% less traffic than the state average of 7,322, suggesting less demand on each road - a factor worth weighing in site selection and logistics planning. Across the whole network, that travel is about 3.1% of Washington's statewide total. By volume, Benton's 6,112 vehicles per day outpaces 76% of counties in Washington.

At 32.4 minutes, the average travel time matches the state level closely. On travel time, Benton runs shorter than 68% of counties in Washington.

At 18.9%, the congestion ratio matches the state level closely.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Benton County, Washington

Trafficvehicles per day15,397
Trucks11.0%
Average travel time36.0 min
Congestion ratio39.6%
Drivers’ average age42.9 yrs
Drivers’ average income$91,599

Highways carry about half of all travel in Benton County, Washington, 47% of vehicle-miles. The average highway carries 15,397 vehicles per day, 165% more than the average non-highway road in the same area, which carries 5,819 vehicles per day.

Highways make up 19% of the monitored road miles (173 miles, 394 segments), so they carry more than their share: 2,262,349 vehicle-miles traveled per day (≈826 million per year).

By highway travel volume, Benton outranks 75% of counties in Washington.

Freight-heavy highways

The concentration of trucks on highways (11.0%) is 16% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.

62% of counties in Washington see a lower highway truck share than Benton's 11.0%. By raw truck volume, Benton carries more highway trucks than 62% of counties in Washington.

non-highway traffic icon

Non-highway Traffic in Benton County, Washington

Trafficvehicles per day5,819
Trucks5.8%
Average travel time32.3 min
Congestion ratio18.2%
Drivers’ average age43.6 yrs
Drivers’ average income$98,802

Local roads carry about half of all travel in Benton County, Washington, 53% of vehicle-miles. The average non-highway road carries 5,819 vehicles per day.

Spread over 727 miles and 12,490 segments, 81% of the road network, local roads carry a lighter load per mile: 2,532,227 vehicle-miles traveled per day (≈924 million per year). The truck share on non-highway roads is 5.8%.

Drivers from higher-income areas than 87% of counties in Washington

Compared to highways, non-highway routes see 48% fewer trucks by share.

Non-highway congestion (18.2%) runs slightly lower than the state level (7% lower).

87% of counties in Washington see lower average driver income among trip origins than Benton. Benton's median driver age is lower than 84% of counties in Washington.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and a long afternoon plateau from 2:00 PM to 8:00 PM, with volumes reaching approximately 88% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 19% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
August–October is the high season, with volumes +12% versus the annual average.
Lowest month:
January is the quietest month, with volumes -19% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Benton County, Washington, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +12% in high season.

Benton County vs. Washington Traffic Comparison

The average daily traffic per road sets Benton County apart: 17% below the Washington average. Its highway truck share, by contrast, is 16% above.

MetricBenton CountyWashington averageDifference
Traffic6,1127,322-16.5%
Truck % (Total Traffic)8.2%7.1%+15.9%
Truck % (Highway)11.0%9.5%+16.1%
Avg. Travel Time32.4 min33.2 min-2.4%

How Benton County compares

Benton County against nearby counties

Nothing in this table sets Benton County sharply apart from the 4 areas nearest to it, though it has the second busiest roads of the five.

Benton 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
Benton County6,1128.2%4,794,57632.4 min18.9%
Franklin County, Washington5,2479.5%2,212,41831.7 min17.1%
Walla Walla County, Washington4,4058.3%1,241,22544.8 min13.5%
Yakima County, Washington7,2699.2%5,113,78738.9 min21.7%
Grant County, Washington3,49711.5%3,043,38133.8 min11.2%
Washington average7,3227.1%N/A33.2 min19.9%

Benton County ranked within Washington

Average driver income places Benton County #6 of 39 in Washington - the top quarter of the state.

Benton County ranked among 39 county-level areas in Washington (1 = highest); measures without data in every county rank a smaller field, down to 33.
MeasureBenton CountyWashington rank
Traffic volume (AADT)6,112#10 of 39
Highway vehicle-miles per day2,262,349#9 of 33
Truck share on highways11.0%#13 of 33
Highway trucks per day1,700#13 of 33
Average travel time32.4 min#27 of 39
Average driver income$95,880#6 of 39
Average driver age43.5 yrs#33 of 39

The two ends of this table sit far apart: #6 of 39 on average driver income, against #33 of 39 on average driver age.

Busiest roads in Benton County, Washington

The three busiest roads in Benton County average 54,077 vehicles a day, 8.8 times the county average of 6,112 across all its monitored roads.

I 182 leads with 62,596 vehicles a day, 5,920 of them trucks (9.5%). It tops the truck ranking too, with the most trucks.

Freight stands out on McNary Highway and I 82: trucks are 17.0% and 14.1% of the traffic there, against 8.2% county-wide.

Trips using I 82 are long: a median of 49.1 minutes against 32.4 county-wide, the mark of a through route.

Drivers on McNary Highway come from neighborhoods with an average household income of $64,154, 33% below the county average of $95,880.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 182Motorway · 62,596vehicles5,920trucks · 9.5%
Road class
Motorway
Congestion ratio
36.3%
Median trip time
36.5 min
Drivers’ median age
43.0 yrs
Drivers’ average income
$98,004

I 182 is a trunk route for the county, carrying 10.2 times the county average on its busiest stretch; trucks are 9.5% of it, above the county-wide 8.2%.

2Lewis and Clark TrailMotorway · 55,034vehicles2,618trucks · 4.8%
Road class
Motorway
Congestion ratio
75.7%
Median trip time
32.6 min
Drivers’ median age
42.3 yrs
Drivers’ average income
$83,396

Delays build on Lewis and Clark Trail: its congestion ratio of 76% over free-flow time is well above the county's 19%.

3WA 240Motorway · 44,601vehicles1,932trucks · 4.3%
Road class
Motorway
Congestion ratio
46.7%
Median trip time
31.7 min
Drivers’ median age
43.4 yrs
Drivers’ average income
$89,771

WA 240 carries 7.3 times the county average at its busiest, 1,932 of them trucks (4.3%, below the county-wide 8.2%).

4Bypass HighwayTrunk road · 34,189vehicles2,184trucks · 6.4%
Road class
Trunk road
Congestion ratio
23.5%
Median trip time
32.2 min
Drivers’ median age
43.7 yrs
Drivers’ average income
$103,472

Bypass Highway carries 5.6 times the county average on its busiest stretch, where the median trip lasts 32.2 minutes.

5US 395Trunk road · 32,766vehicles935trucks · 2.9%
Road class
Trunk road
Congestion ratio
49.1%
Median trip time
39.0 min
Drivers’ median age
42.3 yrs
Drivers’ average income
$80,942

Travel on US 395's busiest stretch runs 49% over free-flow time, against 19% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 182Motorway · #1 by traffic62,596vehicles5,920trucks · 9.5%
2I 82Motorway · 21,531vehicles3,038trucks · 14.1%
Road class
Motorway
Congestion ratio
25.0%
Median trip time
49.1 min
Drivers’ median age
42.6 yrs
Drivers’ average income
$86,701

I 82 carries 3.5 times the county average on its busiest stretch, where the median trip lasts 49.1 minutes.

3Lewis and Clark TrailMotorway · #2 by traffic55,034vehicles2,618trucks · 4.8%
4Bypass HighwayTrunk road · #4 by traffic34,189vehicles2,184trucks · 6.4%
5McNary HighwayMotorway · 12,621vehicles2,151trucks · 17.0%
Road class
Motorway
Congestion ratio
12.2%
Median trip time
44.2 min
Drivers’ median age
40.5 yrs
Drivers’ average income
$64,154

Drivers on McNary Highway are on long journeys, a median 44.2 minutes against 32.4 county-wide: a through route more than a local street.

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

BentonDepartment 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 Benton County

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

Need segment-level traffic data?

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