
Total Traffic Volume & Performance in Grant County, Washington
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,497 |
|---|
Trucks The percentage of the total traffic volume composed of heavy vehicles. | 11.5% |
|---|
Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 33.8 min |
|---|
Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 11.2% |
|---|
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. | $75,800 |
|---|
Our data shows 3,497 vehicles per day on the average road in Grant County, Washington, and 3,043,381 vehicle-miles traveled per day (≈1.1 billion per year) across its 1,036 miles of monitored roads. Freight weighs heavily here: trucks are 11.5% of traffic, against 7.1% across Washington.
Traffic 52% below the Washington average
Grant sees 52% lower average daily traffic volume than the state average (3,497 vehicles per day against 7,322), suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. Network-wide, Grant accounts for about 2.0% of Washington's statewide total of vehicle-miles. Grant carries more traffic than 50% of counties in Washington.
The average trip takes 33.8 minutes, on par with the state level. On travel time, Grant runs longer than 50% of counties in Washington.
Congestion runs 44% lower than the state level, at a ratio of 11.2%, which means smoother traffic flow - fewer delays make delivery windows more reliable.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Grant County, Washington
| Traffic | vehicles per day8,987 |
|---|
| Trucks | 16.0% |
|---|
| Average travel time | 44.0 min |
|---|
| Congestion ratio | 20.7% |
|---|
| Drivers’ average age | 44.0 yrs |
|---|
| Drivers’ average income | $80,462 |
|---|
A significant share of driving in Grant County, Washington, 44% of vehicle-miles, happens on highways. The average highway carries 8,987 vehicles per day, 187% more than the average non-highway road in the same area, which carries 3,133 vehicles per day.
Highways make up 15% of the monitored road miles (160 miles, 415 segments), so they carry more than their share: 1,348,611 vehicle-miles traveled per day (≈492 million per year).
56% of counties in Washington move less traffic on their highways.
Higher highway truck share than 88% of counties in Washington
At 16.0%, highway truck share is 68% higher than the state average. Highways here lean toward freight, so highway access is a real asset for logistics operators.
By truck concentration, highways here outrank 88% of counties in Washington. By raw truck volume, Grant carries more highway trucks than 59% of counties in Washington.

Non-highway Traffic in Grant County, Washington
| Traffic | vehicles per day3,133 |
|---|
| Trucks | 8.0% |
|---|
| Average travel time | 33.2 min |
|---|
| Congestion ratio | 10.5% |
|---|
| Drivers’ average age | 43.4 yrs |
|---|
| Drivers’ average income | $73,889 |
|---|
Local roads carry more than half of all travel in Grant County, Washington (56% of vehicle-miles). A typical local road sees 3,133 vehicles per day.
Local roads make up 85% of the monitored road miles (875 miles in 6,249 segments) but carry less than their share of travel: 1,694,769 vehicle-miles traveled per day (≈619 million per year). Trucks make up 8.0% of non-highway traffic, about 1 in 13 vehicles.
Younger drivers than 82% of counties in Washington
Non-highway roads carry a truck concentration that's 50% lower than the highway network.
The non-highway congestion ratio of 10.5% is 46% lower than the state level, suggesting more efficient local mobility than the state average.
Grant's average driver income is lower than 58% of counties in Washington. Grant's median driver age is lower than 82% of counties in Washington.