Need segment-level traffic data?

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

Get insights →
Traffic heat map of Westmoreland County, Pennsylvania: 1,287 miles of roads shaded from blue (light) to red (heavy traffic), busiest on US 30

Westmoreland County, Pennsylvania Traffic Counts

TrafficZoom tracks traffic on 1,287 road miles in Westmoreland County, Pennsylvania, divided into 22,788 segments averaging 298 ft. Its busiest road, US 30, carries 34,816 vehicles a day, 7.2 times the average road. 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
Find my place
total traffic icon

Total Traffic Volume & Performance in Westmoreland County, Pennsylvania

Traffic

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

vehicles per day4,849
Trucks

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

10.9%
Average travel time

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

31.4 min
Congestion ratio

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

13.8%
Drivers’ average age

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

52.3 yrs
Drivers’ average income

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

$78,590

A typical monitored road in Westmoreland County, Pennsylvania sees 4,849 vehicles per day, while its 1,287 miles of monitored roads together handle 6,929,212 vehicle-miles traveled per day (≈2.5 billion per year). About 1 in 9 vehicles is a truck, in line with Pennsylvania (10.6%).

Shorter trips than 91% of counties in Pennsylvania

Westmoreland's average daily traffic volume is 14% lower than the state average - 4,849 vehicles per day against 5,617 - a critical factor for logistics and site planning. Across the whole network, that travel is about 3.2% of Pennsylvania's statewide total. Westmoreland carries more traffic than 71% of counties in Pennsylvania.

Journey times run 9% lower than the state level, at 31.4 minutes on average. On travel time, Westmoreland runs shorter than 91% of counties in Pennsylvania.

The congestion ratio of 13.8% is 17% 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 Westmoreland County, Pennsylvania

Trafficvehicles per day12,579
Trucks15.5%
Average travel time37.5 min
Congestion ratio26.7%
Drivers’ average age52.2 yrs
Drivers’ average income$78,845

Travel in Westmoreland County, Pennsylvania splits roughly evenly, with about half of it (54% of vehicle-miles) on highways. The average highway carries 12,579 vehicles per day, 217% more than the average non-highway road in the same area, which carries 3,963 vehicles per day.

With 27% of the road miles (345 miles in 2,343 segments), highways punch above their length, carrying 3,740,193 vehicle-miles traveled per day (≈1.4 billion per year).

87% of counties in Pennsylvania move less traffic on their highways.

A typical mix of freight and passenger traffic

The concentration of trucks on highways (15.5%) is in line with the state average for similar road classifications. The highway traffic mix is typical for Pennsylvania: neither freight- nor commuter-dominated.

57% of counties in Pennsylvania see a higher highway truck share than Westmoreland's 15.5%. 60% of counties in Pennsylvania see more highway trucks per day than Westmoreland's roughly 1,945.

non-highway traffic icon

Non-highway Traffic in Westmoreland County, Pennsylvania

Trafficvehicles per day3,963
Trucks5.5%
Average travel time30.6 min
Congestion ratio12.3%
Drivers’ average age52.5 yrs
Drivers’ average income$78,399

Travel in Westmoreland County, Pennsylvania splits roughly evenly, with about half of it (46% of vehicle-miles) on local roads. A typical local road sees 3,963 vehicles per day.

Local roads make up 73% of the monitored road miles (942 miles in 20,445 segments) but carry less than their share of travel: 3,189,019 vehicle-miles traveled per day (≈1.2 billion per year). Trucks make up 5.5% of non-highway traffic, about 1 in 18 vehicles.

Older drivers than 77% of counties in Pennsylvania

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

At 22% lower than the state level, the non-highway congestion ratio of 12.3% signals easier movement on local roads.

68% of counties in Pennsylvania see lower average driver income among trip origins than Westmoreland. The driver population here skews older than 77% of counties in Pennsylvania.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Westmoreland County vs. Pennsylvania Traffic Comparison

Westmoreland County stays close to the Pennsylvania average; the largest gap is its average daily traffic per road, 14% below.

MetricWestmoreland CountyPennsylvania averageDifference
Traffic4,8495,617-13.7%
Truck % (Total Traffic)10.9%10.6%+2.2%
Truck % (Highway)15.5%15.8%-1.8%
Avg. Travel Time31.4 min34.6 min-9.4%

How Westmoreland County compares

Westmoreland County against nearby counties

Westmoreland County tracks the 4 areas around it closely - no measure in this table sets it far apart from the areas immediately next to it, though it has the second busiest roads of the five.

Westmoreland 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
Westmoreland County4,84910.9%6,929,21231.4 min13.8%
Indiana County, Pennsylvania3,32510.0%1,560,67843.1 min12.2%
Fayette County, Pennsylvania3,4567.8%2,007,53732.1 min9.8%
Somerset County, Pennsylvania2,52118.9%1,812,70034.3 min9.6%
Allegheny County, Pennsylvania6,7526.7%17,795,71834.8 min17.9%
Pennsylvania average5,61710.6%N/A34.6 min16.5%

Westmoreland County ranked within Pennsylvania

Average travel time places Westmoreland County #61 of 67 in Pennsylvania - the bottom quarter of the state.

Westmoreland County ranked among 67 county-level areas in Pennsylvania (1 = highest); measures without data in every county rank a smaller field, down to 64.
MeasureWestmoreland CountyPennsylvania rank
Traffic volume (AADT)4,849#20 of 67
Highway vehicle-miles per day3,740,193#9 of 64
Truck share on highways15.5%#37 of 64
Highway trucks per day1,945#39 of 64
Average travel time31.4 min#61 of 67
Average driver income$78,590#22 of 67
Average driver age52.3 yrs#16 of 67

The two ends of this table sit far apart: #9 of 64 on highway travel volume, against #61 of 67 on average travel time.

Busiest roads in Westmoreland County, Pennsylvania

Traffic concentrates on a few corridors: the three busiest roads average 33,131 vehicles a day, against 4,849 on the average road in Westmoreland County.

US 30 is the busiest road, at 34,816 vehicles a day, 1,768 of them trucks (5.1%). Pittsburgh Street is practically level with it at 34,641. Pennsylvania Turnpike carries the most trucks, 6,645 a day (27.1% of its traffic), although it is not among the 5 busiest roads overall.

Pennsylvania Turnpike carries longer journeys than most roads here, with a median trip of 61.0 minutes against 31.4 county-wide.

Trucks make up 27.1% of traffic on Pennsylvania Turnpike and 20.4% on Matthew Smelser Memorial Bridge, against 10.9% across all roads in the county.

Traffic and freight follow different roads here: only 1 of the five busiest roads also make the top 5 for trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1US 30Motorway · 34,816vehicles1,768trucks · 5.1%
Road class
Motorway
Congestion ratio
37.4%
Median trip time
35.2 min
Drivers’ median age
52.4 yrs
Drivers’ average income
$75,715

At 7.2 times the county average, US 30 draws drivers from neighborhoods averaging $75,715 in household income.

2Pittsburgh StreetTrunk road · 34,641vehicles1,549trucks · 4.5%
Road class
Trunk road
Congestion ratio
37.1%
Median trip time
33.1 min
Drivers’ median age
52.2 yrs
Drivers’ average income
$74,944

A main artery: Pittsburgh Street's busiest stretch carries 7.1 times the county average; trucks are 4.5% of it, below the county-wide 10.9%.

3Lincoln HighwayTrunk road · 29,937vehicles1,189trucks · 4.0%
Road class
Trunk road
Congestion ratio
40.8%
Median trip time
34.1 min
Drivers’ median age
52.4 yrs
Drivers’ average income
$77,372

Lincoln Highway is one of the more congested roads here: trips take 41% longer than at free-flow speed, against 14% county-wide.

4I 70Motorway · 27,936vehicles5,459trucks · 19.5%
Road class
Motorway
Congestion ratio
34.3%
Median trip time
41.1 min
Drivers’ median age
51.8 yrs
Drivers’ average income
$70,608

Trucks make up 19.5% of I 70's traffic, against 10.9% across the county, so freight weighs heavily here.

5Tarentum BridgePrimary road · 27,065vehicles1,056trucks · 3.9%
Road class
Primary road
Congestion ratio
40.6%
Median trip time
37.8 min
Drivers’ median age
52.9 yrs
Drivers’ average income
$72,739

Delays build on Tarentum Bridge: its congestion ratio of 41% over free-flow time is well above the county's 14%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Pennsylvania TurnpikeMotorway · 24,521vehicles6,645trucks · 27.1%
Road class
Motorway
Congestion ratio
21.7%
Median trip time
61.0 min
Drivers’ median age
50.5 yrs
Drivers’ average income
$80,069

Pennsylvania Turnpike is a trunk route for the county, carrying 5.1 times the county average on its busiest stretch; trucks are 27.1% of it, above the county-wide 10.9%.

2Matthew Smelser Memorial BridgeMotorway · 26,793vehicles5,473trucks · 20.4%
Road class
Motorway
Congestion ratio
31.8%
Median trip time
45.6 min
Drivers’ median age
52.6 yrs
Drivers’ average income
$73,257

Matthew Smelser Memorial Bridge carries through traffic: the median trip using it lasts 45.6 minutes, against 31.4 for the county.

3I 70Motorway · #4 by traffic27,936vehicles5,459trucks · 19.5%
4Amos K Hutchinson BypassMotorway · 20,366vehicles2,308trucks · 11.3%
Road class
Motorway
Congestion ratio
21.3%
Median trip time
39.1 min
Drivers’ median age
53.0 yrs
Drivers’ average income
$68,411

The busiest stretch of Amos K Hutchinson Bypass carries 4.2 times the county average; trucks are 11.3% of it, in line with the county-wide 10.9%.

5William Penn HighwayTrunk road · 22,960vehicles2,255trucks · 9.8%
Road class
Trunk road
Congestion ratio
30.4%
Median trip time
44.7 min
Drivers’ median age
51.3 yrs
Drivers’ average income
$90,734

Drivers on William Penn Highway are on long journeys, a median 44.7 minutes against 31.4 county-wide: a through route more than a local street.

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

WestmorelandDepartment 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.
link arrow icon
Data current as of:
Q3 2026

Explore further

TrafficZoom platform

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

Counties near Westmoreland County

The same traffic breakdown for the areas closest to Westmoreland County, Pennsylvania.

Need segment-level traffic data?

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