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Traffic heat map of Cass County, North Dakota: 830 miles of roads shaded from blue (light) to red (heavy traffic), busiest on 13th Avenue and Veterans Boulevard

Cass County, North Dakota Traffic Counts

It moves more highway traffic than any other county in North Dakota. This page breaks down traffic in Cass County, North Dakota across 830 miles of monitored roads split into 8,721 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 Cass County, North Dakota

Traffic

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

vehicles per day4,521
Trucks

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

7.2%
Average travel time

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

35.8 min
Congestion ratio

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

17.0%
Drivers’ average age

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

38.6 yrs
Drivers’ average income

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

$92,371

The average monitored road in Cass County, North Dakota carries 4,521 vehicles per day. Across its 830 miles of monitored roads, that adds up to 2,717,476 vehicle-miles traveled per day (≈992 million per year). Trucks are a smaller part of the mix than across North Dakota: 7.2% against 11.1%.

Traffic 108% above the North Dakota average

Cass sees 108% higher average daily traffic volume than the state average (4,521 vehicles per day against 2,174), suggesting more demand on each road - prime passing trade for storefronts, with more competition for road space. Across the whole network, that travel is about 15% of North Dakota's statewide total. Cass carries more traffic than 98% of counties in North Dakota.

At 35.8 minutes, the average travel time matches the state level closely. On travel time, Cass runs shorter than 62% of counties in North Dakota.

At 61% higher than the state level, the 17.0% congestion ratio signals more pronounced congestion - expect markedly slower peak-hour deliveries and unreliable arrival times.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Cass County, North Dakota

Trafficvehicles per day8,089
Trucks11.9%
Average travel time35.9 min
Congestion ratio19.5%
Drivers’ average age39.5 yrs
Drivers’ average income$93,747

A significant share of driving in Cass County, North Dakota, 37% of vehicle-miles, happens on highways. The average highway carries 8,089 vehicles per day, 83% more than the average non-highway road in the same area, which carries 4,408 vehicles per day.

With 22% of the road miles (181 miles in 268 segments), highways punch above their length, carrying 999,494 vehicle-miles traveled per day (≈365 million per year).

No county in North Dakota moves more traffic on its highways.

Lower highway truck share than 94% of counties in North Dakota

Highway truck concentration here runs 18% lower than the state average, at 11.9%. Trucks are a small share of a very large highway flow, so Cass still moves heavy freight volumes alongside its passenger traffic.

94% of counties in North Dakota see a higher highway truck share than Cass's 11.9%. By raw truck volume, Cass carries more highway trucks than 94% of counties in North Dakota.

non-highway traffic icon

Non-highway Traffic in Cass County, North Dakota

Trafficvehicles per day4,408
Trucks4.5%
Average travel time35.8 min
Congestion ratio16.9%
Drivers’ average age38.5 yrs
Drivers’ average income$91,710

A little more than half of the driving in Cass County, North Dakota happens on local roads: 63% of all vehicle-miles. The average non-highway road carries 4,408 vehicles per day.

Their share of road miles is similar, 78% (650 miles in 8,453 segments), carrying 1,717,982 vehicle-miles traveled per day (≈627 million per year). The truck share on non-highway roads is 4.5%.

Younger drivers than 98% of counties in North Dakota

The concentration of trucks on non-highway roads is 62% lower than on highways.

The non-highway congestion ratio of 16.9% is 56% higher than the state level, suggesting slower local mobility than the state average.

94% of counties in North Dakota see lower average driver income among trip origins than Cass. The driver population here skews younger than 98% of counties in North Dakota.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 4:00 PM–7:00 PM, with volumes reaching approximately 73% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 27% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +12% versus the annual average.
Lowest month:
December is the quietest month, with volumes -18% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Cass County, North Dakota, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +12% in high season.

Cass County vs. North Dakota Traffic Comparison

Cass County's biggest difference from the North Dakota average is its average daily traffic per road, 108% above it. Its truck share, by contrast, is 35% below.

MetricCass CountyNorth Dakota averageDifference
Traffic4,5212,174+108.0%
Truck % (Total Traffic)7.2%11.1%-34.9%
Truck % (Highway)11.9%14.5%-17.8%
Avg. Travel Time35.8 min37.0 min-3.3%

How Cass County compares

Cass County is more congested than any nearby county

Against the 4 nearest areas, Cass County carries 212.1% more traffic on a typical road and is 142.1% more congested; it has the busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

Cass County and the 4 nearest county-level areas by centroid distance, with the North Dakota average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Cass County4,5217.2%2,717,47635.8 min17.0%
Traill County, North Dakota97612.2%335,35528.5 min6.2%
Clay County, Minnesota3,0098.8%1,770,23532.1 min10.2%
Ransom County, North Dakota9229.1%119,33634.2 min4.0%
Barnes County, North Dakota88714.3%378,17437.0 min7.8%
North Dakota average2,17411.1%N/A37.0 min10.6%

Cass County ranked within North Dakota

On highway travel volume, Cass County tops the North Dakota field outright.

Cass County ranked among 53 county-level areas in North Dakota (1 = highest); measures without data in every county rank a smaller field, down to 35.
MeasureCass CountyNorth Dakota rank
Traffic volume (AADT)4,521#2 of 53
Highway vehicle-miles per day999,494#1 of 35
Truck share on highways11.9%#33 of 35
Highway trucks per day964#3 of 35
Average travel time35.8 min#33 of 53
Average driver income$92,371#4 of 53
Average driver age38.6 yrs#52 of 53

Cass County ranks #1 of 35 on highway travel volume but #33 of 35 on truck share on highways. It carries some of the heaviest highway traffic in North Dakota, but very little of it is freight - this is commuter and local car volume, not through-trucking.

Busiest roads in Cass County, North Dakota

On their busiest stretches, the three busiest roads in Cass County carry 22,065 vehicles a day on average, 4.9 times the typical road in the county (4,521).

13th Avenue is the busiest road, at 25,848 vehicles a day, 787 of them trucks (3.0%). I 94 carries the most trucks, 1,466 a day (13.1% of its traffic), although it is not among the 5 busiest roads overall.

Trucks make up 13.1% of traffic on I 94, against 7.2% 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.

Few trucks use Veterans Boulevard: 2.5% of its traffic, under half the county's 7.2%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
113th AvenuePrimary road · 25,848vehicles787trucks · 3.0%
Road class
Primary road
Congestion ratio
61.6%
Median trip time
36.0 min
Drivers’ median age
38.9 yrs
Drivers’ average income
$75,218

13th Avenue is one of the more congested roads here: trips take 62% longer than at free-flow speed, against 17% county-wide.

2Veterans BoulevardSecondary road · 21,234vehicles530trucks · 2.5%
Road class
Secondary road
Congestion ratio
50.2%
Median trip time
27.9 min
Drivers’ median age
39.6 yrs
Drivers’ average income
$101,950

The busiest stretch of Veterans Boulevard carries 4.7 times the county average; trucks are 2.5% of it, below the county-wide 7.2%.

332nd Avenue SouthwestSecondary road · 19,113vehicles498trucks · 2.6%
Road class
Secondary road
Congestion ratio
46.7%
Median trip time
32.2 min
Drivers’ median age
39.3 yrs
Drivers’ average income
$85,237

On its busiest stretch, 32nd Avenue Southwest carries 4.2 times the county average; trucks are 2.6% of it, below the county-wide 7.2%.

445th Street SouthwestPrimary road · 17,598vehicles515trucks · 2.9%
Road class
Primary road
Congestion ratio
55.3%
Median trip time
35.1 min
Drivers’ median age
39.3 yrs
Drivers’ average income
$86,656

Delays build on 45th Street Southwest: its congestion ratio of 55% over free-flow time is well above the county's 17%.

525th StreetSecondary road · 15,814vehicles553trucks · 3.5%
Road class
Secondary road
Congestion ratio
42.8%
Median trip time
43.5 min
Drivers’ median age
39.0 yrs
Drivers’ average income
$77,619

25th Street peaks at 15,814 vehicles a day, 3.5 times the county average; trucks are 3.5% of it, below the county-wide 7.2%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 94Motorway · 11,161vehicles1,466trucks · 13.1%
Road class
Motorway
Congestion ratio
18.1%
Median trip time
32.7 min
Drivers’ median age
39.8 yrs
Drivers’ average income
$89,731

I 94 carries 2.5 times the county average at its busiest, 1,466 of them trucks (13.1%, above the county-wide 7.2%).

2I 29Motorway · 10,820vehicles1,140trucks · 10.5%
Road class
Motorway
Congestion ratio
24.4%
Median trip time
36.0 min
Drivers’ median age
39.3 yrs
Drivers’ average income
$96,606

I 29 carries 2.4 times the county average on its busiest stretch, where the median trip lasts 36.0 minutes.

313th AvenuePrimary road · #1 by traffic25,848vehicles787trucks · 3.0%
412th AvenueSecondary road · 12,991vehicles759trucks · 5.8%
Road class
Secondary road
Congestion ratio
32.2%
Median trip time
33.5 min
Drivers’ median age
36.2 yrs
Drivers’ average income
$73,932

At 2.9 times the county average, 12th Avenue draws drivers from neighborhoods averaging $73,932 in household income.

5Main AvenuePrimary road · 11,129vehicles624trucks · 5.6%
Road class
Primary road
Congestion ratio
13.1%
Median trip time
38.2 min
Drivers’ median age
38.6 yrs
Drivers’ average income
$77,783

The busiest stretch of Main Avenue carries 2.5 times the county average; trucks are 5.6% of it, below the county-wide 7.2%.

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

CassDepartment 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 Cass County

The same traffic breakdown for the areas closest to Cass County, North Dakota.

Need segment-level traffic data?

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