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Traffic heat map of Washington County, Rhode Island: 587 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Col Rodman Highway and RI 4

Washington County, Rhode Island Traffic Counts

Its roads are the quietest of any county in Rhode Island, at 4,362 vehicles a day on average. This page breaks down traffic in Washington County, Rhode Island across 587 miles of monitored roads split into 14,378 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
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, Rhode Island

Traffic

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

vehicles per day4,362
Trucks

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

9.4%
Average travel time

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

32.6 min
Congestion ratio

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

14.4%
Drivers’ average age

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

49.3 yrs
Drivers’ average income

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

$110,109

Our data shows 4,362 vehicles per day on the average road in Washington County, Rhode Island, and 2,984,840 vehicle-miles traveled per day (≈1.1 billion per year) across its 587 miles of monitored roads. Trucks are 9.4% of traffic, more than the 7.0% across Rhode Island.

The quietest roads of any county in Rhode Island

At 4,362 vehicles per day, the average monitored road in Washington carries 45% less traffic than the state average of 7,870, suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. In total volume terms, its road network carries about 16% of Rhode Island's statewide total of vehicle-miles. At 4,362 vehicles per day, Washington posts the lowest average traffic volume in Rhode Island.

At 32.6 minutes, the average travel time is 7% lower than the state level. 50% of counties in Rhode Island have a shorter average travel time than Washington's 32.6 minutes.

At 38% lower than the state level, the 14.4% congestion ratio signals smoother traffic flow - fewer delays make delivery windows more reliable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Washington County, Rhode Island

Trafficvehicles per day13,757
Trucks12.1%
Average travel time36.5 min
Congestion ratio28.5%
Drivers’ average age50.2 yrs
Drivers’ average income$109,823

Highways carry about half of all travel in Washington County, Rhode Island, 47% of vehicle-miles. The average highway carries 13,757 vehicles per day, 258% more than the average non-highway road in the same area, which carries 3,839 vehicles per day.

With 19% of the road miles (110 miles in 758 segments), highways punch above their length, carrying 1,388,109 vehicle-miles traveled per day (≈507 million per year).

The highest highway truck share of any county in Rhode Island

At 12.1%, highway truck share is 37% higher than the state average. Highways here lean toward freight, so highway access is a real asset for logistics operators.

By share, Washington has the highest highway truck concentration in Rhode Island, at 12.1%. Washington's highway truck count is lower than 67% of counties in Rhode Island, at roughly 1,659 trucks per day.

non-highway traffic icon

Non-highway Traffic in Washington County, Rhode Island

Trafficvehicles per day3,839
Trucks7.1%
Average travel time32.4 min
Congestion ratio13.7%
Drivers’ average age48.5 yrs
Drivers’ average income$110,265

Local roads carry about half of all travel in Washington County, Rhode Island, 53% of vehicle-miles. On the average non-highway road, that comes to 3,839 vehicles per day.

Local roads make up 81% of the monitored road miles (477 miles in 13,620 segments) but carry less than their share of travel: 1,596,731 vehicle-miles traveled per day (≈583 million per year). Trucks make up 7.1% of non-highway traffic, about 1 in 14 vehicles.

Local congestion 40% below the Rhode Island average

The concentration of trucks on non-highway roads is 41% lower than on highways.

Non-highway congestion (13.7%) runs 40% lower than the state average, pointing to smoother local traffic flow.

Washington's average driver income is higher than 50% of counties in Rhode Island. Washington's median driver age is higher than 50% of counties in Rhode Island.

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 76% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 6% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +28% versus the annual average.
Lowest month:
January is the quietest month, with volumes -24% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Washington County, Rhode Island, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +28% in high season.

Washington County vs. Rhode Island Traffic Comparison

The average daily traffic per road sets Washington County apart: 45% below the Rhode Island average. Its highway truck share, by contrast, is 37% above.

MetricWashington CountyRhode Island averageDifference
Traffic4,3627,870-44.6%
Truck % (Total Traffic)9.4%7.0%+35.2%
Truck % (Highway)12.1%8.8%+36.9%
Avg. Travel Time32.6 min35.2 min-7.2%

How Washington County compares

Washington County has the quietest roads among its nearby counties

Against the 4 nearest areas, Washington County carries 30.4% less traffic on a typical road; it has the quietest roads of the five.

Washington County and the 4 nearest county-level areas by centroid distance, with the Rhode Island average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Washington County4,3629.4%2,984,84032.6 min14.4%
Kent County, Rhode Island8,8187.2%3,797,17633.2 min21.4%
Newport County, Rhode Island4,8266.4%1,178,04031.2 min14.9%
Bristol County, Rhode Island5,6237.0%372,87931.1 min16.0%
New London County, Connecticut5,7829.8%5,951,51832.6 min14.5%
Rhode Island average7,8707.0%N/A35.2 min23.3%

Washington County ranked within Rhode Island

Washington County posts the highest truck share on highways of any county-level area in Rhode Island.

Washington County ranked among 5 county-level areas in Rhode Island (1 = highest); measures without data in every county rank a smaller field, down to 4.
MeasureWashington CountyRhode Island rank
Traffic volume (AADT)4,362#5 of 5
Highway vehicle-miles per day1,388,109#3 of 4
Truck share on highways12.1%#1 of 4
Highway trucks per day1,659#3 of 4
Average travel time32.6 min#3 of 5
Average driver income$110,109#3 of 5
Average driver age49.3 yrs#3 of 5

Washington County ranks #1 of 4 on truck share on highways but #5 of 5 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 Washington County, Rhode Island

On their busiest stretches, the three busiest roads in Washington County carry 49,790 vehicles a day on average, 11.4 times the typical road in the county (4,362).

Col Rodman Highway is the busiest road, at 55,335 vehicles a day, 4,996 of them trucks (9.0%). RI 4 is practically level with it at 55,148. I 95 carries the most trucks, 5,875 a day (24.8% of its traffic), although it is not among the 5 busiest roads overall.

Trucks make up 24.8% of traffic on I 95, against 9.4% across all roads in the county.

I 95 carries longer journeys than most roads here, with a median trip of 54.1 minutes against 32.6 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Col Rodman HighwayMotorway · 55,335vehicles4,996trucks · 9.0%
Road class
Motorway
Congestion ratio
68.0%
Median trip time
37.3 min
Drivers’ median age
49.0 yrs
Drivers’ average income
$114,288

Delays build on Col Rodman Highway: its congestion ratio of 68% over free-flow time is well above the county's 14%.

2RI 4Motorway · 55,148vehicles4,550trucks · 8.2%
Road class
Motorway
Congestion ratio
62.1%
Median trip time
37.4 min
Drivers’ median age
48.8 yrs
Drivers’ average income
$113,571

Travel on RI 4's busiest stretch runs 62% over free-flow time, against 14% across the county, so expect slower peak hours.

3Tower Hill RoadTrunk road · 38,888vehicles2,592trucks · 6.7%
Road class
Trunk road
Congestion ratio
48.3%
Median trip time
36.4 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$113,295

Tower Hill Road carries 8.9 times the county average at its busiest, 2,592 of them trucks (6.7%, below the county-wide 9.4%).

4Jamestown Verrazzano BridgeMotorway · 35,093vehicles2,933trucks · 8.4%
Road class
Motorway
Congestion ratio
43.9%
Median trip time
38.1 min
Drivers’ median age
49.1 yrs
Drivers’ average income
$108,239

Jamestown Verrazzano Bridge carries 8.0 times the county average on its busiest stretch, where the median trip lasts 38.1 minutes.

5RI 138Motorway · 30,589vehicles3,249trucks · 10.6%
Road class
Motorway
Congestion ratio
36.6%
Median trip time
40.0 min
Drivers’ median age
48.8 yrs
Drivers’ average income
$108,600

At 7.0 times the county average, RI 138 draws drivers from neighborhoods averaging $108,600 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 95Motorway · 23,657vehicles5,875trucks · 24.8%
Road class
Motorway
Congestion ratio
22.8%
Median trip time
54.1 min
Drivers’ median age
50.7 yrs
Drivers’ average income
$107,777

A main artery: I 95's busiest stretch carries 5.4 times the county average; trucks are 24.8% of it, above the county-wide 9.4%.

2Col Rodman HighwayMotorway · #1 by traffic55,335vehicles4,996trucks · 9.0%
3RI 4Motorway · #2 by traffic55,148vehicles4,550trucks · 8.2%
4RI 138Motorway · #5 by traffic30,589vehicles3,249trucks · 10.6%
5Jamestown Verrazzano BridgeMotorway · #4 by traffic35,093vehicles2,933trucks · 8.4%
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, Rhode Island.

Need segment-level traffic data?

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