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Traffic heat map of Skamania County, Washington: 115 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Evergreen Highway and 2nd Street

Skamania County, Washington Traffic Counts

Traffic analytics for Skamania County, Washington, calculated from real-world mobile and sensor networks on 1,334 road segments (115 road miles, about 453 ft each). Its busiest road, Evergreen Highway, carries 5,575 vehicles a day, 3.5 times the average road. 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 Volume & Performance in Skamania County, Washington

Traffic

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

vehicles per day1,608
Trucks

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

8.4%
Average travel time

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

33.9 min
Congestion ratio

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

9.1%
Drivers’ average age

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

52.6 yrs
Drivers’ average income

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

$85,124

A typical monitored road in Skamania County, Washington sees 1,608 vehicles per day, while its 115 miles of monitored roads together handle 195,228 vehicle-miles traveled per day (≈71.3 million per year). At 8.4%, the truck share runs above the 7.1% across Washington: about 1 in 12 vehicles.

Quieter roads than 92% of counties in Washington

At 1,608 vehicles per day, the average monitored road in Skamania carries 78% less traffic than the state average of 7,322, suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. In total volume terms, its road network carries about 0.1% of Washington's statewide total of vehicle-miles. 92% of counties in Washington see more traffic than Skamania's 1,608 vehicles per day.

The average trip takes 33.9 minutes, on par with the state level. Its average travel time of 33.9 minutes is longer than 58% of counties in Washington.

Congestion runs 54% lower than the state level, at a ratio of 9.1%, which means smoother traffic flow - free-flowing roads make scheduled deliveries highly predictable.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Skamania County, Washington, the peak hour concentrates about 8% of the day's traffic.

Skamania County vs. Washington Traffic Comparison

Skamania County's biggest difference from the Washington average is its average daily traffic per road, 78% below it. Its truck share, by contrast, is 18% above.

MetricSkamania CountyWashington averageDifference
Traffic1,6087,322-78.0%
Truck % (Total Traffic)8.4%7.1%+18.3%
Avg. Travel Time33.9 min33.2 min+2.1%

How Skamania County compares

Skamania County moves the least traffic of its nearby counties

Set against the average of the 4 areas nearest to it, Skamania County moves 2.9% of the total daily travel and carries 74.1% less traffic on a typical road; it has the quietest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.

Skamania 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
Skamania County1,6088.4%195,22833.9 min9.1%
Clark County, Washington6,2095.7%8,959,05229.8 min20.3%
Hood River County, Oregon3,26414.6%1,051,29728.6 min12.7%
Cowlitz County, Washington5,12012.3%3,588,92233.2 min15.0%
Multnomah County, Oregon10,2437.2%13,759,96935.7 min26.9%
Washington average7,3227.1%N/A33.2 min19.9%

Skamania County ranked within Washington

Average daily traffic volume places Skamania County #36 of 39 in Washington - the bottom quarter of the state.

Skamania County ranked among 39 county-level areas in Washington (1 = highest).
MeasureSkamania CountyWashington rank
Traffic volume (AADT)1,608#36 of 39
Average travel time33.9 min#17 of 39
Average driver income$85,124#12 of 39
Average driver age52.6 yrs#12 of 39

Skamania County ranks #12 of 39 on average driver income but #36 of 39 on average daily traffic volume - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Skamania County, Washington

Traffic concentrates on a few corridors: the three busiest roads average 4,923 vehicles a day, against 1,608 on the average road in Skamania County.

Evergreen Highway is the busiest road, at 5,575 vehicles a day, 443 of them trucks (7.9%). It tops the truck ranking too, with the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Evergreen HighwayPrimary road · 5,575vehicles443trucks · 7.9%
Road class
Primary road
Congestion ratio
11.8%
Median trip time
41.5 min
Drivers’ median age
52.9 yrs
Drivers’ average income
$82,469

Evergreen Highway carries 3.5 times the county average at its busiest, 443 of them trucks (7.9%, below the county-wide 8.4%).

22nd StreetPrimary road · 5,116vehicles396trucks · 7.7%
Road class
Primary road
Congestion ratio
16.6%
Median trip time
33.0 min
Drivers’ median age
52.8 yrs
Drivers’ average income
$80,832

2nd Street is one of the more congested roads here: trips take 17% longer than at free-flow speed, against 9% county-wide.

3Lewis and Clark Trail HighwayPrimary road · 4,077vehicles338trucks · 8.3%
Road class
Primary road
Congestion ratio
8.8%
Median trip time
29.5 min
Drivers’ median age
53.7 yrs
Drivers’ average income
$85,033

Lewis and Clark Trail Highway carries 2.5 times the county average on its busiest stretch, where the median trip lasts 29.5 minutes.

4Southeast Lewis and Clark HighwayPrimary road · 3,620vehicles310trucks · 8.6%
Road class
Primary road
Median trip time
41.5 min
Drivers’ median age
50.1 yrs
Drivers’ average income
$97,886

At 2.3 times the county average, Southeast Lewis and Clark Highway draws drivers from neighborhoods averaging $97,886 in household income.

5Lewis and Clark HighwayPrimary road · 3,497vehicles301trucks · 8.6%
Road class
Primary road
Congestion ratio
8.3%
Median trip time
31.4 min
Drivers’ median age
53.7 yrs
Drivers’ average income
$84,260

The busiest stretch of Lewis and Clark Highway carries 2.2 times the county average; trucks are 8.6% of it, in line with the county-wide 8.4%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Evergreen HighwayPrimary road · #1 by traffic5,575vehicles443trucks · 7.9%
22nd StreetPrimary road · #2 by traffic5,116vehicles396trucks · 7.7%
3Lewis and Clark Trail HighwayPrimary road · #3 by traffic4,077vehicles338trucks · 8.3%
4Southeast Lewis and Clark HighwayPrimary road · #4 by traffic3,620vehicles310trucks · 8.6%
5Lewis and Clark HighwayPrimary road · #5 by traffic3,497vehicles301trucks · 8.6%
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

SkamaniaDepartment 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 Skamania County

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

Need segment-level traffic data?

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