
Total Traffic Volume & Performance in Spokane County, Washington
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day7,390 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 5.8% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 33.4 min |
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Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 19.6% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 44.8 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $78,652 |
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Our data shows 7,390 vehicles per day on the average road in Spokane County, Washington, and 10,252,503 vehicle-miles traveled per day (≈3.7 billion per year) across its 1,446 miles of monitored roads. About 1 in 17 vehicles is a truck, fewer than the 1 in 14 across Washington.
Busier roads than 92% of counties in Washington
At 7,390 vehicles per day, the average road in Spokane tracks closely with the state average of 7,322 vehicles per day. Across the whole network, that travel is about 6.6% of Washington's statewide total. Spokane carries more traffic than 92% of counties in Washington.
The average trip takes 33.4 minutes, on par with the state level. Its average travel time of 33.4 minutes is shorter than 58% of counties in Washington.
The congestion ratio of 19.6% is in line with the state level.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Spokane County, Washington
| Traffic | vehicles per day17,649 |
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| Trucks | 8.4% |
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| Average travel time | 34.2 min |
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| Congestion ratio | 31.2% |
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| Drivers’ average age | 45.5 yrs |
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| Drivers’ average income | $77,355 |
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A significant share of driving in Spokane County, Washington, 34% of vehicle-miles, happens on highways. The average highway carries 17,649 vehicles per day, 146% more than the average non-highway road in the same area, which carries 7,178 vehicles per day.
Highways make up 13% of the monitored road miles (193 miles, 739 segments), so they carry more than their share: 3,451,591 vehicle-miles traveled per day (≈1.3 billion per year).
By highway travel volume, that ranks Spokane in the top 5 counties in Washington.
Lower highway truck share than 75% of counties in Washington
At 8.4%, highway truck share is 12% lower than the state average. The highway traffic mix is typical for Washington: neither freight- nor commuter-dominated.
By truck concentration, highways here trail 75% of counties in Washington. Spokane's highway truck count is higher than 66% of counties in Washington, at roughly 1,482 trucks per day.

Non-highway Traffic in Spokane County, Washington
| Traffic | vehicles per day7,178 |
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| Trucks | 4.5% |
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| Average travel time | 33.4 min |
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| Congestion ratio | 19.3% |
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| Drivers’ average age | 44.6 yrs |
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| Drivers’ average income | $79,191 |
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Local roads carry more than half of all travel in Spokane County, Washington (66% of vehicle-miles). A typical local road sees 7,178 vehicles per day.
Spread over 1,252 miles and 35,800 segments, 87% of the road network, local roads carry a lighter load per mile: 6,800,912 vehicle-miles traveled per day (≈2.5 billion per year). About 1 in 22 vehicles on non-highway roads is a truck (4.5%).
Younger drivers than 71% of counties in Washington
Compared to highways, non-highway routes see 47% fewer trucks by share.
At 19.3%, the non-highway congestion ratio matches the state level closely.
50% of counties in Washington see lower average driver income among trip origins than Spokane. Spokane's median driver age is lower than 71% of counties in Washington.