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Traffic heat map of Musselshell County, Montana: 77 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Main Street and 1st Avenue

Musselshell County, Montana Traffic Counts

How busy are the roads of Musselshell County, Montana? We measure 77 road miles, divided into 349 segments, with multi-sourced, cross-verified mobile and sensor data. The average road here carries 1,712 vehicles a day, 59% less than the Montana average of 4,202. The breakdown below covers volume, trucks, congestion and driver profiles for retailers, logistics planners and engineers.
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 Musselshell County, Montana

Traffic

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

vehicles per day1,712
Trucks

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

10.2%
Average travel time

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

49.9 min
Congestion ratio

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

5.5%
Drivers’ average age

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

55.4 yrs
Drivers’ average income

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

$61,552

Our data shows 1,712 vehicles per day on the average road in Musselshell County, Montana, and 84,846 vehicle-miles traveled per day (≈31.0 million per year) across its 77 miles of monitored roads. About 1 in 10 vehicles is a truck, in line with Montana (11.7%).

Longer trips than 87% of counties in Montana

Musselshell sees 59% lower average daily traffic volume than the state average (1,712 vehicles per day against 4,202), suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. Network-wide, Musselshell accounts for about 0.3% of Montana's statewide total of vehicle-miles. 51% of counties in Montana see less traffic than Musselshell's 1,712 vehicles per day.

The average trip takes 49.9 minutes, 38% higher than the state level. Its average travel time of 49.9 minutes is longer than 87% of counties in Montana.

Congestion runs 55% lower than the state level, at a ratio of 5.5%, which means smoother traffic flow - delays are rare enough to plan travel times almost to the minute.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Musselshell County vs. Montana Traffic Comparison

The average daily traffic per road sets Musselshell County apart: 59% below the Montana average. Its average travel time, by contrast, is 38% above.

MetricMusselshell CountyMontana averageDifference
Traffic1,7124,202-59.3%
Truck % (Total Traffic)10.2%11.7%-13.0%
Avg. Travel Time49.9 min36.2 min+37.8%

How Musselshell County compares

Musselshell County against nearby counties

Against the 4 nearest areas, Musselshell County moves 9.7% of the total daily travel; it has the second busiest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Musselshell County and the 4 nearest county-level areas by centroid distance, with the Montana average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Musselshell County1,71210.2%84,84649.9 min5.5%
Yellowstone County, Montana6,4718.5%3,250,72434.2 min16.0%
Golden Valley County, Montana1,46015.1%53,60861.8 min4.9%
Petroleum County, Montana41611.3%28,30648.6 minN/A
Treasure County, Montana80619.7%155,87641.1 min5.7%
Montana average4,20211.7%N/A36.2 min12.3%

Musselshell County ranked within Montana

Musselshell County sits in the top quarter of the Montana field on average travel time, at #8 of 56.

Musselshell County ranked among 56 county-level areas in Montana (1 = highest).
MeasureMusselshell CountyMontana rank
Traffic volume (AADT)1,712#28 of 56
Average travel time49.9 min#8 of 56
Average driver income$61,552#40 of 56
Average driver age55.4 yrs#9 of 56

Busiest roads in Musselshell County, Montana

On their busiest stretches, the three busiest roads in Musselshell County carry 3,919 vehicles a day on average, 2.3 times the typical road in the county (1,712).

Main Street is the busiest road, at 4,335 vehicles a day, 276 of them trucks (6.4%). US 12 carries the most trucks, 337 a day (9.2% of its traffic), although it ranks #3 for all traffic.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Main StreetPrimary road · 4,335vehicles276trucks · 6.4%
Road class
Primary road
Congestion ratio
5.3%
Median trip time
50.9 min
Drivers’ median age
57.0 yrs
Drivers’ average income
$54,233

Main Street carries 2.5 times the county average at its busiest, 276 of them trucks (6.4%, below the county-wide 10.2%).

21st AvenuePrimary road · 3,777vehicles325trucks · 8.6%
Road class
Primary road
Congestion ratio
8.6%
Median trip time
48.0 min
Drivers’ median age
55.9 yrs
Drivers’ average income
$58,734

1st Avenue carries 2.2 times the county average on its busiest stretch, where the median trip lasts 48.0 minutes.

3US 12Primary road · 3,644vehicles337trucks · 9.2%
Road class
Primary road
Congestion ratio
8.3%
Median trip time
42.8 min
Drivers’ median age
54.8 yrs
Drivers’ average income
$61,408

At 2.1 times the county average, US 12 draws drivers from neighborhoods averaging $61,408 in household income.

4US 87Primary road · 1,862vehicles203trucks · 10.9%
Road class
Primary road
Congestion ratio
4.4%
Median trip time
47.5 min
Drivers’ median age
54.3 yrs
Drivers’ average income
$65,121

US 87 carries 9% more than the county average at its busiest, 203 of them trucks (10.9%, above the county-wide 10.2%).

58th AvenueSecondary road · 1,387vehicles71trucks · 5.1%
Road class
Secondary road
Congestion ratio
3.2%
Median trip time
42.2 min
Drivers’ median age
57.6 yrs
Drivers’ average income
$54,441

Even at its busiest, 8th Avenue carries 19% less than the county average; trucks are 5.1% of it, below the county-wide 10.2%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 12Primary road · #3 by traffic3,644vehicles337trucks · 9.2%
21st AvenuePrimary road · #2 by traffic3,777vehicles325trucks · 8.6%
3Main StreetPrimary road · #1 by traffic4,335vehicles276trucks · 6.4%
4US 87Primary road · #4 by traffic1,862vehicles203trucks · 10.9%
58th AvenueSecondary road · #5 by traffic1,387vehicles71trucks · 5.1%
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

MusselshellDepartment 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 Musselshell County

The same traffic breakdown for the areas closest to Musselshell County, Montana.

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