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Traffic heat map of Salem County, New Jersey: 482 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Delaware Memorial Bridge

Salem County, New Jersey Traffic Counts

Our Salem County, New Jersey traffic data covers 10,467 road segments over 482 road miles, with an average segment of just 243 ft. Its roads are the quietest of any county in New Jersey, at 3,362 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 Salem County, New Jersey

Traffic

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

vehicles per day3,362
Trucks

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

14.3%
Average travel time

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

31.9 min
Congestion ratio

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

10.9%
Drivers’ average age

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

48.3 yrs
Drivers’ average income

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

$89,005

Our data shows 3,362 vehicles per day on the average road in Salem County, New Jersey, and 1,847,133 vehicle-miles traveled per day (≈674 million per year) across its 482 miles of monitored roads. Freight weighs heavily here: trucks are 14.3% of traffic, against 7.9% across New Jersey.

The quietest roads of any county in New Jersey

Salem sees 62% lower average daily traffic volume than the state average (3,362 vehicles per day against 8,886), suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 1.2% of New Jersey's statewide total of vehicle-miles. Salem stands out as having the lowest traffic volume in New Jersey - 3,362 vehicles per day.

At 31.9 minutes, the average travel time matches the state level closely. 80% of counties in New Jersey have a longer average travel time than Salem's 31.9 minutes.

Congestion runs 60% lower than the state level, at a ratio of 10.9%, which means smoother traffic flow - free-flowing roads make scheduled deliveries highly predictable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Salem County, New Jersey

Trafficvehicles per day10,316
Trucks19.7%
Average travel time42.2 min
Congestion ratio27.8%
Drivers’ average age48.1 yrs
Drivers’ average income$85,767

Highways carry more than half of all travel in Salem County, New Jersey (58% of vehicle-miles). The average highway carries 10,316 vehicles per day, 361% more than the average non-highway road in the same area, which carries 2,236 vehicles per day.

Yet highways are only 19% of the road network, 90 miles in 1,459 segments, so each mile of them is 3.1 times as busy as the average road mile.

The highest highway truck share of any county in New Jersey

Highway truck concentration here runs 93% higher than the state average, at 19.7%. Highways here lean toward freight, so highway access is a real asset for logistics operators.

Salem also posts the highest highway truck share in New Jersey - 19.7%. 55% of counties in New Jersey see more highway trucks per day than Salem's roughly 2,030.

non-highway traffic icon

Non-highway Traffic in Salem County, New Jersey

Trafficvehicles per day2,236
Trucks6.9%
Average travel time30.3 min
Congestion ratio8.2%
Drivers’ average age48.7 yrs
Drivers’ average income$92,019

Local roads carry a significant share of travel in Salem County, New Jersey: 42% of all vehicle-miles. On the average non-highway road, that comes to 2,236 vehicles per day.

Spread over 392 miles and 9,008 segments, 81% of the road network, local roads carry a lighter load per mile: 775,327 vehicle-miles traveled per day (≈283 million per year). The truck share on non-highway roads is 6.9%.

Drivers from lower-income areas than 95% of counties in New Jersey

The concentration of trucks on non-highway roads is 65% lower than on highways.

At 66% lower than the state level, the non-highway congestion ratio of 8.2% signals easier movement on local roads.

Salem's average driver income is lower than 95% of counties in New Jersey. The driver population here skews older than 55% of counties in New Jersey.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and PM peak 4:00 PM–6:00 PM, with volumes reaching approximately 70% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 16% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +7% versus the annual average.
Lowest month:
January is the quietest month, with volumes -13% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Salem County, New Jersey, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +7% in high season.

Salem County vs. New Jersey Traffic Comparison

Salem County's biggest difference from the New Jersey average is its highway truck share, 93% above it. Its truck share is also 80% above.

MetricSalem CountyNew Jersey averageDifference
Traffic3,3628,886-62.2%
Truck % (Total Traffic)14.3%7.9%+80.5%
Truck % (Highway)19.7%10.2%+92.8%
Avg. Travel Time31.9 min33.4 min-4.2%

How Salem County compares

Salem County is the least congested of its nearby counties

Set against the average of the 4 areas nearest to it, Salem County is 47.7% less congested and carries 54.3% less traffic on a typical road; 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.

Salem County and the 4 nearest county-level areas by centroid distance, with the New Jersey average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Salem County3,36214.3%1,847,13331.9 min10.9%
Gloucester County, New Jersey6,76410.5%5,932,90032.0 min19.2%
New Castle County, Delaware7,9848.2%12,194,14934.7 min21.3%
Delaware County, Pennsylvania9,4826.2%6,862,36035.7 min25.2%
Cumberland County, New Jersey5,1767.4%2,594,30935.0 min17.7%
New Jersey average8,8867.9%N/A33.4 min27.0%

Salem County ranked within New Jersey

No other county-level area in New Jersey records a higher truck share on highways than Salem County.

Salem County ranked among 21 county-level areas in New Jersey (1 = highest).
MeasureSalem CountyNew Jersey rank
Traffic volume (AADT)3,362#21 of 21
Highway vehicle-miles per day1,071,806#17 of 21
Truck share on highways19.7%#1 of 21
Highway trucks per day2,030#12 of 21
Average travel time31.9 min#17 of 21
Average driver income$89,005#20 of 21
Average driver age48.3 yrs#10 of 21

Salem County ranks #1 of 21 on truck share on highways but #21 of 21 on average daily traffic volume. It is a freight corridor without the traffic to match: trucks dominate the mix precisely because there is so little local car traffic to dilute them.

Busiest roads in Salem County, New Jersey

The three busiest roads in Salem County average 31,988 vehicles a day, 9.5 times the county average of 3,362 across all its monitored roads.

Delaware Memorial Bridge leads with 38,654 vehicles a day, 10,179 of them trucks (26.3%). New Jersey Turnpike carries the most trucks, 10,388 a day (37.3% of its traffic), although it ranks #3 for all traffic.

New Jersey Turnpike carries longer journeys than most roads here, with a median trip of 80.6 minutes against 31.9 county-wide.

Trucks make up 37.3% of traffic on New Jersey Turnpike and 26.3% on Delaware Memorial Bridge, against 14.3% across all roads in the county.

New Jersey Turnpike skews younger: its drivers' median age is 37.7, compared with 48.3 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Delaware Memorial BridgeMotorway · 38,654vehicles10,179trucks · 26.3%
Road class
Motorway
Congestion ratio
26.1%
Median trip time
58.4 min
Drivers’ median age
43.7 yrs
Drivers’ average income
$88,368

Delaware Memorial Bridge carries through traffic: the median trip using it lasts 58.4 minutes, against 31.9 for the county.

2Camden FreewayMotorway · 29,469vehicles5,048trucks · 17.1%
Road class
Motorway
Congestion ratio
23.2%
Median trip time
48.1 min
Drivers’ median age
46.5 yrs
Drivers’ average income
$92,391

A main artery: Camden Freeway's busiest stretch carries 8.8 times the county average; trucks are 17.1% of it, above the county-wide 14.3%.

3New Jersey TurnpikeMotorway · 27,842vehicles10,388trucks · 37.3%
Road class
Motorway
Congestion ratio
31.5%
Median trip time
80.6 min
Drivers’ median age
37.7 yrs
Drivers’ average income
$82,551

New Jersey Turnpike is a trunk route for the county, carrying 8.3 times the county average on its busiest stretch; trucks are 37.3% of it, above the county-wide 14.3%.

4NJ 55Motorway · 27,741vehicles2,971trucks · 10.7%
Road class
Motorway
Congestion ratio
44.8%
Median trip time
52.7 min
Drivers’ median age
48.9 yrs
Drivers’ average income
$98,110

Delays build on NJ 55: its congestion ratio of 45% over free-flow time is well above the county's 11%.

5North BroadwayTrunk road · 17,515vehicles837trucks · 4.8%
Road class
Trunk road
Congestion ratio
63.5%
Median trip time
29.0 min
Drivers’ median age
47.8 yrs
Drivers’ average income
$77,182

Travel on North Broadway's busiest stretch runs 64% over free-flow time, against 11% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1New Jersey TurnpikeMotorway · #3 by traffic27,842vehicles10,388trucks · 37.3%
2Delaware Memorial BridgeMotorway · #1 by traffic38,654vehicles10,179trucks · 26.3%
3Camden FreewayMotorway · #2 by traffic29,469vehicles5,048trucks · 17.1%
4NJ 55Motorway · #4 by traffic27,741vehicles2,971trucks · 10.7%
5Harding HighwayTrunk road · 13,637vehicles1,179trucks · 8.7%
Road class
Trunk road
Congestion ratio
36.7%
Median trip time
42.3 min
Drivers’ median age
49.0 yrs
Drivers’ average income
$98,529

At 4.1 times the county average, Harding Highway draws drivers from neighborhoods averaging $98,529 in household income.

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

SalemDepartment 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 Salem County

The same traffic breakdown for the areas closest to Salem County, New Jersey.

Need segment-level traffic data?

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