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Traffic heat map of Washington County, Pennsylvania: 1,045 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Raymond P Shafer Highway

Washington County, Pennsylvania Traffic Counts

Our Washington County, Pennsylvania traffic data covers 17,524 road segments over 1,045 road miles, with an average segment of just 315 ft. Its busiest road, Raymond P Shafer Highway, carries 51,804 vehicles a day, 12.9 times the average road. 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, Pennsylvania

Traffic

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

vehicles per day4,008
Trucks

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

13.2%
Average travel time

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

32.5 min
Congestion ratio

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

13.1%
Drivers’ average age

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

50.9 yrs
Drivers’ average income

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

$91,193

The average monitored road in Washington County, Pennsylvania carries 4,008 vehicles per day. Across its 1,045 miles of monitored roads, that adds up to 4,731,556 vehicle-miles traveled per day (≈1.7 billion per year). At 13.2%, the truck share runs above the 10.6% across Pennsylvania: about 1 in 8 vehicles.

Shorter trips than 74% of counties in Pennsylvania

Washington sees 29% lower average daily traffic volume than the state average (4,008 vehicles per day against 5,617), suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. Across the whole network, that travel is about 2.2% of Pennsylvania's statewide total. 62% of counties in Pennsylvania see less traffic than Washington's 4,008 vehicles per day.

The average trip takes 32.5 minutes, 6% lower than the state level. 74% of counties in Pennsylvania have a longer average travel time than Washington's 32.5 minutes.

The congestion ratio of 13.1% is 21% lower, pointing to smoother traffic flow than the state level - crucial for traffic control improvement and logistics planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Washington County, Pennsylvania

Trafficvehicles per day9,154
Trucks18.8%
Average travel time45.6 min
Congestion ratio18.1%
Drivers’ average age50.3 yrs
Drivers’ average income$84,377

Travel in Washington County, Pennsylvania splits roughly evenly, with about half of it (54% of vehicle-miles) on highways. The average highway carries 9,154 vehicles per day, 146% more than the average non-highway road in the same area, which carries 3,715 vehicles per day.

With 23% of the road miles (240 miles in 945 segments), highways punch above their length, carrying 2,562,245 vehicle-miles traveled per day (≈935 million per year).

By highway travel volume, Washington outranks 78% of counties in Pennsylvania.

Freight-heavy highways

The concentration of trucks on highways (18.8%) is 19% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.

Washington's highway truck share (18.8%) is higher than 57% of counties in Pennsylvania. Washington's highway truck count is higher than 56% of counties in Pennsylvania, at roughly 1,722 trucks per day.

non-highway traffic icon

Non-highway Traffic in Washington County, Pennsylvania

Trafficvehicles per day3,715
Trucks6.5%
Average travel time31.8 min
Congestion ratio12.8%
Drivers’ average age51.2 yrs
Drivers’ average income$95,337

Travel in Washington County, Pennsylvania splits roughly evenly, with about half of it (46% of vehicle-miles) on local roads. A typical local road sees 3,715 vehicles per day.

Local roads make up 77% of the monitored road miles (804 miles in 16,579 segments) but carry less than their share of travel: 2,169,311 vehicle-miles traveled per day (≈792 million per year). Trucks make up 6.5% of non-highway traffic, about 1 in 15 vehicles.

Drivers from higher-income areas than 86% of counties in Pennsylvania

Non-highway roads carry a truck concentration that's 65% lower than the highway network.

At 19% lower than the state level, the non-highway congestion ratio of 12.8% signals easier movement on local roads.

Washington's average driver income is higher than 86% of counties in Pennsylvania. Washington's median driver age is higher than 58% of counties in Pennsylvania.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Washington County, Pennsylvania, the peak hour concentrates about 7% of the day's traffic.

Washington County vs. Pennsylvania Traffic Comparison

Of the four measures, average daily traffic per road differs most: Washington County runs 29% below the Pennsylvania average. Its truck share, by contrast, is 24% above.

MetricWashington CountyPennsylvania averageDifference
Traffic4,0085,617-28.6%
Truck % (Total Traffic)13.2%10.6%+23.7%
Truck % (Highway)18.8%15.8%+19.4%
Avg. Travel Time32.5 min34.6 min-6.2%

How Washington County compares

Washington County has the quietest roads among its nearby counties

Set against the average of the 4 areas nearest to it, Washington County carries 43.9% less traffic on a typical road and is 33.7% less congested; 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 Pennsylvania average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Washington County4,00813.2%4,731,55632.5 min13.1%
Brooke County, West Virginia6,3778.1%765,98328.9 min20.6%
Allegheny County, Pennsylvania6,7526.7%17,795,71834.8 min17.9%
Ohio County, West Virginia8,47210.7%1,826,53428.4 min19.3%
Hancock County, West Virginia6,9716.9%597,65928.1 min21.3%
Pennsylvania average5,61710.6%N/A34.6 min16.5%

Washington County ranked within Pennsylvania

Average driver income places Washington County #10 of 67 in Pennsylvania - the top quarter of the state.

Washington County ranked among 67 county-level areas in Pennsylvania (1 = highest); measures without data in every county rank a smaller field, down to 64.
MeasureWashington CountyPennsylvania rank
Traffic volume (AADT)4,008#26 of 67
Highway vehicle-miles per day2,562,245#15 of 64
Truck share on highways18.8%#28 of 64
Highway trucks per day1,722#29 of 64
Average travel time32.5 min#50 of 67
Average driver income$91,193#10 of 67
Average driver age50.9 yrs#29 of 67

Busiest roads in Washington County, Pennsylvania

Traffic concentrates on a few corridors: the three busiest roads average 47,314 vehicles a day, against 4,008 on the average road in Washington County.

Raymond P Shafer Highway is the busiest road, at 51,804 vehicles a day, 6,550 of them trucks (12.6%). I 79 carries the most trucks, 6,762 a day (13.7% of its traffic), although it ranks #2 for all traffic.

I 70 carries longer journeys than most roads here, with a median trip of 46.7 minutes against 32.5 county-wide.

Drivers on Washington Road come from neighborhoods with an average household income of $119,212, 31% above the county average of $91,193.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Raymond P Shafer HighwayMotorway · 51,804vehicles6,550trucks · 12.6%
Road class
Motorway
Congestion ratio
57.2%
Median trip time
42.4 min
Drivers’ median age
48.9 yrs
Drivers’ average income
$104,488

Raymond P Shafer Highway is one of the more congested roads here: trips take 57% longer than at free-flow speed, against 13% county-wide.

2I 79Motorway · 49,383vehicles6,762trucks · 13.7%
Road class
Motorway
Congestion ratio
56.8%
Median trip time
43.6 min
Drivers’ median age
49.9 yrs
Drivers’ average income
$95,466

Delays build on I 79: its congestion ratio of 57% over free-flow time is well above the county's 13%.

3I 70Motorway · 40,755vehicles6,754trucks · 16.6%
Road class
Motorway
Congestion ratio
41.3%
Median trip time
46.7 min
Drivers’ median age
50.3 yrs
Drivers’ average income
$86,345

A main artery: I 70's busiest stretch carries 10.2 times the county average; trucks are 16.6% of it, above the county-wide 13.2%.

4Washington RoadPrimary road · 19,884vehicles728trucks · 3.7%
Road class
Primary road
Congestion ratio
25.0%
Median trip time
31.8 min
Drivers’ median age
51.3 yrs
Drivers’ average income
$119,212

Washington Road carries 5.0 times the county average on its busiest stretch, where the median trip lasts 31.8 minutes.

5US 22Motorway · 16,459vehicles2,380trucks · 14.5%
Road class
Motorway
Congestion ratio
16.0%
Median trip time
43.5 min
Drivers’ median age
50.0 yrs
Drivers’ average income
$71,619

Drivers on US 22 are on long journeys, a median 43.5 minutes against 32.5 county-wide: a through route more than a local street.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 79Motorway · #2 by traffic49,383vehicles6,762trucks · 13.7%
2I 70Motorway · #3 by traffic40,755vehicles6,754trucks · 16.6%
3Raymond P Shafer HighwayMotorway · #1 by traffic51,804vehicles6,550trucks · 12.6%
4US 22Motorway · #5 by traffic16,459vehicles2,380trucks · 14.5%
5Mon/Fayette ExpresswayMotorway · 6,726vehicles873trucks · 13.0%
Road class
Motorway
Congestion ratio
7.7%
Median trip time
40.6 min
Drivers’ median age
50.5 yrs
Drivers’ average income
$75,286

Mon/Fayette Expressway carries 68% more than the county average on its busiest stretch, where the median trip lasts 40.6 minutes.

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, Pennsylvania.

Need segment-level traffic data?

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