
Total Traffic Volume & Performance in Washington County, Maine
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day1,920 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 9.1% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 36.3 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. | 6.9% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 54.3 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $53,802 |
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The average monitored road in Washington County, Maine carries 1,920 vehicles per day. Across its 505 miles of monitored roads, that adds up to 825,655 vehicle-miles traveled per day (≈301 million per year). About 1 in 11 vehicles is a truck, in line with Maine (8.7%).
The quietest roads of any county in Maine
Washington's average daily traffic volume is 60% lower than the state average - 1,920 vehicles per day against 4,836 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. Across the whole network, that travel is about 2.5% of Maine's statewide total. At 1,920 vehicles per day, Washington posts the lowest average traffic volume in Maine.
Journey times here (36.3 minutes on average) closely track the state level. 73% of counties in Maine have a shorter average travel time than Washington's 36.3 minutes.
At 53% lower than the state level, the 6.9% congestion ratio signals smoother traffic flow - free-flowing roads make scheduled deliveries highly predictable.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Washington County, Maine
| Traffic | vehicles per day3,142 |
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| Trucks | 11.5% |
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| Average travel time | 48.5 min |
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| Congestion ratio | 8.2% |
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| Drivers’ average age | 53.4 yrs |
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| Drivers’ average income | $54,062 |
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Highways carry a smaller share of travel in Washington County, Maine, 17% of vehicle-miles; most driving happens on local roads. The average highway carries 3,142 vehicles per day, 70% more than the average non-highway road in the same area, which carries 1,844 vehicles per day.
Highways make up 11% of the monitored road miles (54 miles, 241 segments), so they carry more than their share: 143,943 vehicle-miles traveled per day (≈52.5 million per year).
The fewest highway trucks of any county in Maine
The concentration of trucks on highways (11.5%) is 7% lower than the state average for similar road classifications. The highway traffic mix is typical for Maine: neither freight- nor commuter-dominated.
57% of counties in Maine see a higher highway truck share than Washington's 11.5%. By raw volume, Washington carries the lowest number of highway trucks in Maine - roughly 307 trucks per day.

Non-highway Traffic in Washington County, Maine
| Traffic | vehicles per day1,844 |
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| Trucks | 8.6% |
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| Average travel time | 35.6 min |
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| Congestion ratio | 6.8% |
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| Drivers’ average age | 54.4 yrs |
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| Drivers’ average income | $53,787 |
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Local roads carry the vast majority of travel in Washington County, Maine, 83% of all vehicle-miles. The average non-highway road carries 1,844 vehicles per day.
Local roads also make up about 89% of the monitored road miles: 451 miles in 3,868 segments, together carrying 681,711 vehicle-miles traveled per day (≈249 million per year). Trucks make up 8.6% of non-highway traffic, about 1 in 12 vehicles.
The lowest driver income of any county in Maine
The concentration of trucks on non-highway roads is 25% lower than on highways.
At 51% lower than the state level, the non-highway congestion ratio of 6.8% signals easier movement on local roads.
Washington also has the lowest average driver income in Maine among trip origins - $53,802. 87% of counties in Maine have a younger driver population than Washington.