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Traffic heat map of Washington County, Maryland: 703 miles of roads shaded from blue (light) to red (heavy traffic)

Washington County, Maryland Traffic Counts

TrafficZoom tracks traffic on 703 road miles in Washington County, Maryland, divided into 14,389 segments averaging 258 ft. Its highways carry the highest truck share of any county in Maryland, 20.2%. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
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, Maryland

Traffic

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

vehicles per day4,572
Trucks

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

13.9%
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.

16.0%
Drivers’ average age

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

47.8 yrs
Drivers’ average income

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

$82,744

Our data shows 4,572 vehicles per day on the average road in Washington County, Maryland, and 4,960,209 vehicle-miles traveled per day (≈1.8 billion per year) across its 703 miles of monitored roads. About 1 in 7 vehicles is a truck, well above the 7.5% across Maryland - a freight-heavy mix.

Traffic 41% below the Maryland average

Washington's average daily traffic volume is 41% lower than the state average - 4,572 vehicles per day against 7,693 - suggesting less traffic load per road - less drive-by exposure for retail, but easier access for deliveries. Across the whole network, that travel is about 3.6% of Maryland's statewide total. By volume, Washington's 4,572 vehicles per day trails 61% of counties in Maryland.

The average trip takes 33.9 minutes, on par with the state level. Its average travel time of 33.9 minutes is longer than 61% of counties in Maryland.

Congestion runs 22% lower than the state level, at a ratio of 16.0%, which means smoother traffic flow - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Washington County, Maryland

Trafficvehicles per day20,595
Trucks20.2%
Average travel time45.8 min
Congestion ratio42.4%
Drivers’ average age48.0 yrs
Drivers’ average income$85,853

Highways carry more than half of all travel in Washington County, Maryland (57% of vehicle-miles). The average highway carries 20,595 vehicles per day, 399% more than the average non-highway road in the same area, which carries 4,127 vehicles per day.

Yet highways are only 18% of the road network, 129 miles in 389 segments, so each mile of them is 3.1 times as busy as the average road mile.

65% of counties in Maryland move less traffic on their highways.

The highest highway truck share of any county in Maryland

The concentration of trucks on highways (20.2%) is 107% higher than the state average for similar road classifications. That marks Washington as a major freight corridor, where highway access is what logistics operators compete on.

Washington also posts the highest highway truck share in Maryland - 20.2%. By raw volume, Washington carries the highest number of highway trucks in Maryland - roughly 4,438 trucks per day.

non-highway traffic icon

Non-highway Traffic in Washington County, Maryland

Trafficvehicles per day4,127
Trucks5.5%
Average travel time33.6 min
Congestion ratio15.3%
Drivers’ average age47.7 yrs
Drivers’ average income$81,298

A significant share of driving in Washington County, Maryland, 43% of vehicle-miles, happens on local roads. The average non-highway road carries 4,127 vehicles per day.

Local roads make up 82% of the monitored road miles (574 miles in 14,000 segments) but carry less than their share of travel: 2,124,353 vehicle-miles traveled per day (≈775 million per year). The truck share on non-highway roads is 5.5%.

Drivers from lower-income areas than 70% of counties in Maryland

The concentration of trucks on non-highway roads is 73% lower than on highways.

The non-highway congestion ratio of 15.3% is 20% lower than the state level, suggesting more efficient local mobility than the state average.

70% of counties in Maryland see higher average driver income among trip origins than Washington. Washington's median driver age is higher than 61% of counties in Maryland.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and a long afternoon plateau from 12:00 PM to 6:00 PM, with volumes reaching approximately 66% higher than the daily average.
Weekend traffic:
Weekends are busier than weekdays: volumes run about 7% above weekday levels, which usually points to leisure, tourism or shopping traffic.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +15% versus the annual average.
Lowest month:
January is the quietest month, with volumes -19% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Washington County, Maryland, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +15% in high season.

Washington County vs. Maryland Traffic Comparison

Of the four measures, highway truck share differs most: Washington County runs 107% above the Maryland average. Its truck share is also 86% above.

MetricWashington CountyMaryland averageDifference
Traffic4,5727,693-40.6%
Truck % (Total Traffic)13.9%7.5%+85.6%
Truck % (Highway)20.2%9.8%+107.2%
Avg. Travel Time33.9 min34.0 min-0.4%

How Washington County compares

Washington County has a higher truck share than any nearby county

Set against the average of the 4 areas nearest to it, Washington County carries 35.2% less traffic on a typical road and runs 6.0 percentage points more truck traffic; it has the quietest roads of the five. Freight passes through here that never reaches the areas around it: the truck share is high precisely because the local car traffic is not.

Washington County and the 4 nearest county-level areas by centroid distance, with the Maryland average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Washington County4,57213.9%4,960,20933.9 min16.0%
Jefferson County, West Virginia6,8806.0%2,066,94428.8 min19.1%
Frederick County, Maryland4,8139.1%7,587,14230.0 min14.4%
Berkeley County, West Virginia9,79510.2%4,763,96132.1 min22.3%
Loudoun County, Virginia6,7166.1%7,945,32031.6 min20.3%
Maryland average7,6937.5%N/A34.0 min20.5%

Washington County ranked within Maryland

Truck share on highways and highway truck volume: on all 2, Washington County sits first in Maryland.

Washington County ranked among 24 county-level areas in Maryland (1 = highest).
MeasureWashington CountyMaryland rank
Traffic volume (AADT)4,572#15 of 24
Highway vehicle-miles per day2,835,856#9 of 24
Truck share on highways20.2%#1 of 24
Highway trucks per day4,164#1 of 24
Average travel time33.9 min#10 of 24
Average driver income$82,744#17 of 24
Average driver age47.8 yrs#10 of 24

Busiest roads in Washington County, Maryland

Traffic concentrates on a few corridors: the three busiest roads average 51,511 vehicles a day, against 4,572 on the average road in Washington County.

Maryland Veterans Memorial Highway leads with 63,418 vehicles a day, 12,491 of them trucks (19.7%). It tops the truck ranking too, with the most trucks.

National Freeway carries longer journeys than most roads here, with a median trip of 64.4 minutes against 33.9 county-wide.

Freight stands out on US 40 and National Freeway: trucks are 27.0% and 23.8% of the traffic there, against 13.9% county-wide.

Drivers on Virginia Avenue come from neighborhoods with an average household income of $56,590, 32% below the county average of $82,744.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Maryland Veterans Memorial HighwayMotorway · 63,418vehicles12,491trucks · 19.7%
Road class
Motorway
Congestion ratio
65.8%
Median trip time
40.1 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$83,733

Delays build on Maryland Veterans Memorial Highway: its congestion ratio of 66% over free-flow time is well above the county's 16%.

2Dwight D Eisenhower HighwayMotorway · 47,550vehicles8,938trucks · 18.8%
Road class
Motorway
Congestion ratio
50.1%
Median trip time
47.5 min
Drivers’ median age
47.8 yrs
Drivers’ average income
$88,832

Dwight D Eisenhower Highway carries 10.4 times the county average on its busiest stretch, where the median trip lasts 47.5 minutes.

3I 70, US 40 (Dwight D Eisenhower Highway)Motorway · 43,566vehicles9,725trucks · 22.3%
Road class
Motorway
Congestion ratio
47.9%
Median trip time
59.3 min
Drivers’ median age
50.1 yrs
Drivers’ average income
$75,070

I 70, US 40 (Dwight D Eisenhower Highway) carries through traffic: the median trip using it lasts 59.3 minutes, against 33.9 for the county.

4Virginia AvenueSecondary road · 32,481vehicles1,421trucks · 4.4%
Road class
Secondary road
Congestion ratio
86.0%
Median trip time
46.9 min
Drivers’ median age
47.0 yrs
Drivers’ average income
$56,590

Travel on Virginia Avenue's busiest stretch runs 86% over free-flow time, against 16% across the county, so expect slower peak hours.

5Dual HighwayPrimary road · 27,836vehicles1,211trucks · 4.3%
Road class
Primary road
Congestion ratio
37.2%
Median trip time
34.0 min
Drivers’ median age
47.7 yrs
Drivers’ average income
$76,061

At 6.1 times the county average, Dual Highway draws drivers from neighborhoods averaging $76,061 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Maryland Veterans Memorial HighwayMotorway · #1 by traffic63,418vehicles12,491trucks · 19.7%
2I 70, US 40 (Dwight D Eisenhower Highway)Motorway · #3 by traffic43,566vehicles9,725trucks · 22.3%
3Dwight D Eisenhower HighwayMotorway · #2 by traffic47,550vehicles8,938trucks · 18.8%
4US 40Motorway · 21,405vehicles5,787trucks · 27.0%
Road class
Motorway
Congestion ratio
32.3%
Median trip time
62.1 min
Drivers’ median age
51.3 yrs
Drivers’ average income
$71,177

Drivers on US 40 are on long journeys, a median 62.1 minutes against 33.9 county-wide: a through route more than a local street.

5National FreewayMotorway · 24,135vehicles5,754trucks · 23.8%
Road class
Motorway
Congestion ratio
26.0%
Median trip time
64.4 min
Drivers’ median age
50.3 yrs
Drivers’ average income
$68,066

A main artery: National Freeway's busiest stretch carries 5.3 times the county average; trucks are 23.8% of it, above the county-wide 13.9%.

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, Maryland.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.