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Traffic heat map of Powder River County, Montana: 105 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Holt Street and Park Avenue

Powder River County, Montana Traffic Counts

Traffic analytics for Powder River County, Montana, calculated from real-world mobile and sensor networks on 243 road segments (105 road miles, about 2,288 ft each). About 1 in 6 vehicles here is a truck, against 1 in 9 across Montana. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
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 Powder River County, Montana

Traffic

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

vehicles per day1,968
Trucks

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

17.5%
Average travel time

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

44.2 min
Congestion ratio

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

6.3%
Drivers’ average age

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

54.5 yrs
Drivers’ average income

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

$63,490

A typical monitored road in Powder River County, Montana sees 1,968 vehicles per day, while its 105 miles of monitored roads together handle 167,760 vehicle-miles traveled per day (≈61.2 million per year). Freight weighs heavily here: trucks are 17.5% of traffic, against 11.7% across Montana.

Traffic 53% below the Montana average

Powder River's average daily traffic volume is 53% lower than the state average - 1,968 vehicles per day against 4,202 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. Network-wide, Powder River accounts for about 0.6% of Montana's statewide total of vehicle-miles. 64% of counties in Montana see less traffic than Powder River's 1,968 vehicles per day.

Journey times run 22% higher than the state level, at 44.2 minutes on average. On travel time, Powder River runs longer than 76% of counties in Montana.

At 49% lower than the state level, the 6.3% 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 Powder River County, Montana

Trafficvehicles per day2,445
Trucks16.6%
Average travel time43.7 min
Congestion ratio6.3%
Drivers’ average age54.5 yrs
Drivers’ average income$63,479

Highways carry nearly all of the traffic in Powder River County, Montana, 90% of all vehicle-miles. The average highway carries 2,445 vehicles per day, 410% more than the average non-highway road in the same area, which carries 480 vehicles per day.

With 68% of the road miles (72 miles in 184 segments), highways punch above their length, carrying 151,283 vehicle-miles traveled per day (≈55.2 million per year).

A typical mix of freight and passenger traffic

Highway truck concentration here runs 11% higher than the state average, at 16.6%. The highway traffic mix is typical for Montana: neither freight- nor commuter-dominated.

By truck concentration, highways here outrank 61% of counties in Montana. By raw truck volume, Powder River carries fewer highway trucks than 52% of counties in Montana.

non-highway traffic icon

Non-highway Traffic in Powder River County, Montana

Trafficvehicles per day480
Trucks26.1%
Average travel time46.0 min
Drivers’ average age54.5 yrs
Drivers’ average income$63,750

Local roads carry only a small share of the traffic in Powder River County, Montana, 10% of all vehicle-miles. The average non-highway road carries 480 vehicles per day.

Spread over 34 miles and 59 segments, 32% of the road network, local roads carry a lighter load per mile: 16,477 vehicle-miles traveled per day (≈6.0 million per year). About 1 in 4 vehicles on non-highway roads is a truck (26.1%).

Older drivers than 78% of counties in Montana

Unusually, the concentration of trucks on non-highway roads is 57% higher than on highways.

Trip origins here have lower average income than 58% of counties in Montana. 78% of counties in Montana have a younger driver population than Powder River.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 9:00 AM–12:00 PM and PM peak 12:00 PM–2:00 PM, with volumes reaching approximately 70% higher than the daily average.
Weekend traffic:
Weekends are busier than weekdays: volumes run about 11% above weekday levels, which usually points to leisure, tourism or shopping traffic.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +43% versus the annual average.
Lowest month:
February is the quietest month, with volumes -39% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Powder River County, Montana, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +43% in high season.

Powder River County vs. Montana Traffic Comparison

Powder River County's biggest difference from the Montana average is its average daily traffic per road, 53% below it. Its truck share, by contrast, is 50% above.

MetricPowder River CountyMontana averageDifference
Traffic1,9684,202-53.2%
Truck % (Total Traffic)17.5%11.7%+50.1%
Truck % (Highway)16.6%15.0%+10.7%
Avg. Travel Time44.2 min36.2 min+22.3%

How Powder River County compares

Powder River County against nearby counties

Nothing in this table sets Powder River County sharply apart from the 4 areas nearest to it, though it has the second busiest roads of the five.

Powder River 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
Powder River County1,96817.5%167,76044.2 min6.3%
Custer County, Montana2,27415.3%375,96535.0 min10.2%
Carter County, Montana89516.4%117,94051.4 min4.4%
Rosebud County, Montana1,52418.4%345,80743.1 min4.6%
Fallon County, Montana1,05910.5%55,08439.9 min4.1%
Montana average4,20211.7%N/A36.2 min12.3%

Powder River County ranked within Montana

Powder River County sits in the top quarter of the Montana field on average driver age, at #13 of 56.

Powder River County ranked among 56 county-level areas in Montana (1 = highest); measures without data in every county rank a smaller field, down to 47.
MeasurePowder River CountyMontana rank
Traffic volume (AADT)1,968#21 of 56
Highway vehicle-miles per day151,283#31 of 47
Truck share on highways16.6%#19 of 47
Highway trucks per day406#25 of 47
Average travel time44.2 min#14 of 56
Average driver income$63,490#33 of 56
Average driver age54.5 yrs#13 of 56

Busiest roads in Powder River County, Montana

On their busiest stretches, the three busiest roads in Powder River County carry 3,492 vehicles a day on average, 77% more than the typical road in the county (1,968).

Holt Street is the busiest road, at 3,777 vehicles a day, 557 of them trucks (14.7%). Park Avenue is practically level with it at 3,677. US 212 carries the most trucks, 597 a day (19.8% of its traffic), although it ranks #3 for all traffic.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Holt StreetTrunk road · 3,777vehicles557trucks · 14.7%
Road class
Trunk road
Congestion ratio
11.8%
Median trip time
46.0 min
Drivers’ median age
54.5 yrs
Drivers’ average income
$63,750

Holt Street carries 92% more than the county average on its busiest stretch, where the median trip lasts 46.0 minutes.

2Park AvenueTrunk road · 3,677vehicles459trucks · 12.5%
Road class
Trunk road
Congestion ratio
11.4%
Median trip time
37.3 min
Drivers’ median age
54.5 yrs
Drivers’ average income
$63,750

At 87% more than the county average, Park Avenue draws drivers from neighborhoods averaging $63,750 in household income.

3US 212Trunk road · 3,023vehicles597trucks · 19.8%
Road class
Trunk road
Congestion ratio
5.0%
Median trip time
43.3 min
Drivers’ median age
54.5 yrs
Drivers’ average income
$63,750

US 212 is busy by local standards, at 54% more than the county average on its busiest stretch; trucks are 19.8% of it, above the county-wide 17.5%.

4MT 59Primary road · 507vehicles78trucks · 15.4%
Road class
Primary road
Median trip time
48.5 min
Drivers’ median age
54.5 yrs
Drivers’ average income
$63,750

MT 59 is a quieter road: its busiest stretch carries 74% less than the county average; trucks are 15.4% of it, below the county-wide 17.5%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 212Trunk road · #3 by traffic3,023vehicles597trucks · 19.8%
2Holt StreetTrunk road · #1 by traffic3,777vehicles557trucks · 14.7%
3Park AvenueTrunk road · #2 by traffic3,677vehicles459trucks · 12.5%
4MT 59Primary road · #4 by traffic507vehicles78trucks · 15.4%
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

Powder RiverDepartment 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 Powder River County

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

Need segment-level traffic data?

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