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Traffic heat map of Washington County, Maine: 505 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Baring Street and Dublin Street

Washington County, Maine Traffic Counts

Our Washington County, Maine traffic data covers 4,109 road segments over 505 road miles, with an average segment of just 650 ft. Its roads are the quietest of any county in Maine, at 1,920 vehicles a day on average. 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 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
Trucks

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

9.1%
Average travel time

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

36.3 min
Congestion ratio

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

6.9%
Drivers’ average age

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

54.3 yrs
Drivers’ average income

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

$53,802

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 icon

Highway Traffic in Washington County, Maine

Trafficvehicles per day3,142
Trucks11.5%
Average travel time48.5 min
Congestion ratio8.2%
Drivers’ average age53.4 yrs
Drivers’ average income$54,062

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 icon

Non-highway Traffic in Washington County, Maine

Trafficvehicles per day1,844
Trucks8.6%
Average travel time35.6 min
Congestion ratio6.8%
Drivers’ average age54.4 yrs
Drivers’ average income$53,787

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.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and a long afternoon plateau from 12:00 PM to 6:00 PM, with volumes reaching approximately 77% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 30% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +20% versus the annual average.
Lowest month:
January is the quietest month, with volumes -25% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Washington County, Maine, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +20% in high season.

Washington County vs. Maine Traffic Comparison

Of the four measures, average daily traffic per road differs most: Washington County runs 60% below the Maine average.

MetricWashington CountyMaine averageDifference
Traffic1,9204,836-60.3%
Truck % (Total Traffic)9.1%8.7%+4.6%
Truck % (Highway)11.5%12.3%-6.6%
Avg. Travel Time36.3 min34.6 min+4.9%

How Washington County compares

Washington County has the quietest roads among its nearby counties

Compared with its 4 closest neighbours, Washington County is 45.9% less congested and carries 52.7% 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.

Washington County and the 4 nearest county-level areas by centroid distance, with the Maine average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Washington County1,9209.1%825,65536.3 min6.9%
Hancock County, Maine4,0167.6%1,756,95134.6 min12.9%
Penobscot County, Maine5,0259.6%3,894,05032.4 min15.9%
Waldo County, Maine3,0008.4%977,40840.3 min9.8%
Knox County, Maine4,1917.0%758,65033.2 min12.5%
Maine average4,8368.7%N/A34.6 min14.6%

Washington County ranked within Maine

On average driver age, Washington County is among the three highest county-level areas in Maine.

Washington County ranked among 16 county-level areas in Maine (1 = highest); measures without data in every county rank a smaller field, down to 15.
MeasureWashington CountyMaine rank
Traffic volume (AADT)1,920#16 of 16
Highway vehicle-miles per day143,943#15 of 15
Truck share on highways11.5%#9 of 15
Highway trucks per day362#15 of 15
Average travel time36.3 min#5 of 16
Average driver income$53,802#16 of 16
Average driver age54.3 yrs#3 of 16

The two ends of this table sit far apart: #3 of 16 on average driver age, against #16 of 16 on average daily traffic volume.

Busiest roads in Washington County, Maine

The three busiest roads in Washington County average 6,440 vehicles a day, 3.4 times the county average of 1,920 across all its monitored roads.

Baring Street is the busiest road, at 6,783 vehicles a day, 476 of them trucks (7.0%). It also carries the most trucks.

Trips using ME 9 are long: a median of 79.2 minutes against 36.3 county-wide, the mark of a through route.

Trucks make up 15.1% of traffic on Airline Road and 14.5% on ME 9, against 9.1% across all roads in the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Baring StreetTrunk road · 6,783vehicles476trucks · 7.0%
Road class
Trunk road
Congestion ratio
18.3%
Median trip time
28.1 min
Drivers’ median age
52.8 yrs
Drivers’ average income
$51,581

Delays build on Baring Street: its congestion ratio of 18% over free-flow time is well above the county's 7%.

2Dublin StreetPrimary road · 6,380vehicles323trucks · 5.1%
Road class
Primary road
Congestion ratio
19.6%
Median trip time
43.3 min
Drivers’ median age
53.3 yrs
Drivers’ average income
$52,803

Travel on Dublin Street's busiest stretch runs 20% over free-flow time, against 7% across the county, so expect slower peak hours.

3Route 1Trunk road · 6,155vehicles471trucks · 7.7%
Road class
Trunk road
Congestion ratio
16.2%
Median trip time
30.4 min
Drivers’ median age
52.7 yrs
Drivers’ average income
$51,937

On its busiest stretch, Route 1 carries 3.2 times the county average; trucks are 7.7% of it, below the county-wide 9.1%.

4Main StreetPrimary road · 5,440vehicles374trucks · 6.9%
Road class
Primary road
Congestion ratio
16.6%
Median trip time
40.1 min
Drivers’ median age
54.0 yrs
Drivers’ average income
$54,008

Main Street peaks at 5,440 vehicles a day, 2.8 times the county average; trucks are 6.9% of it, below the county-wide 9.1%.

5Bridge StreetPrimary road · 4,260vehicles359trucks · 8.4%
Road class
Primary road
Congestion ratio
11.1%
Median trip time
45.9 min
Drivers’ median age
55.6 yrs
Drivers’ average income
$52,443

Bridge Street carries 2.2 times the county average at its busiest, 359 of them trucks (8.4%, below the county-wide 9.1%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1Baring StreetTrunk road · #1 by traffic6,783vehicles476trucks · 7.0%
2Route 1Trunk road · #3 by traffic6,155vehicles471trucks · 7.7%
3Airline RoadTrunk road · 2,714vehicles411trucks · 15.1%
Road class
Trunk road
Congestion ratio
6.5%
Median trip time
77.9 min
Drivers’ median age
59.0 yrs
Drivers’ average income
$54,781

Drivers on Airline Road are on long journeys, a median 77.9 minutes against 36.3 county-wide: a through route more than a local street.

4ME 9Trunk road · 2,761vehicles400trucks · 14.5%
Road class
Trunk road
Congestion ratio
7.7%
Median trip time
79.2 min
Drivers’ median age
58.9 yrs
Drivers’ average income
$55,132

At 44% more than the county average, ME 9 draws drivers from neighborhoods averaging $55,132 in household income.

5Main StreetPrimary road · #4 by traffic5,440vehicles374trucks · 6.9%
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

WashingtonDepartment 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 Washington County

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

Need segment-level traffic data?

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