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Traffic heat map of Mineral County, Montana: 180 miles of roads shaded from blue (light) to red (heavy traffic)

Mineral County, Montana Traffic Counts

Its highways carry the highest truck share of any county in Montana, 27.1%. This page breaks down traffic in Mineral County, Montana across 180 miles of monitored roads split into 571 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 Mineral County, Montana

Traffic

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

vehicles per day1,957
Trucks

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

25.8%
Average travel time

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

48.6 min
Congestion ratio

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

6.4%
Drivers’ average age

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

50.2 yrs
Drivers’ average income

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

$68,921

Our data shows 1,957 vehicles per day on the average road in Mineral County, Montana, and 513,086 vehicle-miles traveled per day (≈187 million per year) across its 180 miles of monitored roads. Freight weighs heavily here: trucks are 25.8% of traffic, against 11.7% across Montana.

Longer trips than 84% of counties in Montana

Mineral's average daily traffic volume is 53% lower than the state average - 1,957 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, Mineral accounts for about 1.8% of Montana's statewide total of vehicle-miles. 62% of counties in Montana see less traffic than Mineral's 1,957 vehicles per day.

Journey times run 34% higher than the state level, at 48.6 minutes on average. On travel time, Mineral runs longer than 84% of counties in Montana.

At 48% lower than the state level, the 6.4% 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 Mineral County, Montana

Trafficvehicles per day3,094
Trucks27.1%
Average travel time60.2 min
Congestion ratio8.8%
Drivers’ average age49.5 yrs
Drivers’ average income$69,842

Nearly all driving in Mineral County, Montana happens on highways: 93% of every vehicle-mile. The average highway carries 3,094 vehicles per day, 198% more than the average non-highway road in the same area, which carries 1,038 vehicles per day.

Highways make up 77% of the monitored road miles (139 miles, 255 segments), so they carry more than their share: 478,425 vehicle-miles traveled per day (≈175 million per year).

That is more highway travel volume than 76% of counties in Montana.

The highest highway truck share of any county in Montana

At 27.1%, highway truck share is 81% higher than the state average. That marks Mineral as a major freight corridor, where highway access is what logistics operators compete on.

Mineral also posts the highest highway truck share in Montana - 27.1%. By raw truck volume, Mineral carries more highway trucks than 87% of counties in Montana.

non-highway traffic icon

Non-highway Traffic in Mineral County, Montana

Trafficvehicles per day1,038
Trucks8.1%
Average travel time39.2 min
Congestion ratio4.4%
Drivers’ average age57.2 yrs
Drivers’ average income$63,514

Only a small share of travel in Mineral County, Montana happens on local roads: 7% of vehicle-miles. A typical local road sees 1,038 vehicles per day.

Local roads make up 23% of the monitored road miles (41 miles in 316 segments) but carry less than their share of travel: 34,661 vehicle-miles traveled per day (≈12.7 million per year). About 1 in 12 vehicles on non-highway roads is a truck (8.1%).

Local congestion 63% below the Montana average

Non-highway roads carry a truck concentration that's 70% lower than the highway network.

At 63% lower than the state level, the non-highway congestion ratio of 4.4% signals easier movement on local roads.

55% of counties in Montana see lower average driver income among trip origins than Mineral. The driver population here skews younger than 53% of counties in Montana.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 9:00 AM–12:00 PM and a long afternoon plateau from 2:00 PM to 9:00 PM, with volumes reaching approximately 56% higher than the daily average.
Weekend traffic:
Weekend traffic is about as busy as on weekdays (+4%): leisure and through trips largely replace the commute.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +40% versus the annual average.
Lowest month:
January is the quietest month, with volumes -36% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Mineral County, Montana, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +40% in high season.

Mineral County vs. Montana Traffic Comparison

Mineral County's biggest difference from the Montana average is its truck share, 121% above it. Its highway truck share is also 81% above.

MetricMineral CountyMontana averageDifference
Traffic1,9574,202-53.4%
Truck % (Total Traffic)25.8%11.7%+120.9%
Truck % (Highway)27.1%15.0%+80.6%
Avg. Travel Time48.6 min36.2 min+34.4%

How Mineral County compares

Mineral County has a higher truck share than any nearby county

Compared with its 4 closest neighbours, Mineral County runs 16.1 percentage points more truck traffic and carries 51.2% less traffic on a typical road; it has the fourth busiest 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.

Mineral 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
Mineral County1,95725.8%513,08648.6 min6.4%
Sanders County, Montana1,9199.6%320,95338.0 min5.9%
Lake County, Montana4,3079.1%875,23739.6 min10.6%
Missoula County, Montana7,2769.8%2,532,44735.0 min16.8%
Clearwater County, Idaho2,54910.1%139,07726.2 minN/A
Montana average4,20211.7%N/A36.2 min12.3%

Mineral County ranked within Montana

Mineral County posts the highest truck share on highways of any county-level area in Montana.

Mineral County ranked among 56 county-level areas in Montana (1 = highest); measures without data in every county rank a smaller field, down to 47.
MeasureMineral CountyMontana rank
Traffic volume (AADT)1,957#22 of 56
Highway vehicle-miles per day478,425#12 of 47
Truck share on highways27.1%#1 of 47
Highway trucks per day837#7 of 47
Average travel time48.6 min#10 of 56
Average driver income$68,921#26 of 56
Average driver age50.2 yrs#30 of 56

Busiest roads in Mineral County, Montana

On their busiest stretches, the top three roads on this list in Mineral County carry 4,091 vehicles a day on average, 2.1 times the typical road in the county (1,957).

I 90 tops the list with 6,847 vehicles a day, 1,853 of them trucks (27.1%). That is 2.3 times the next road, River Street (3,007). It tops the truck ranking too, with the most trucks on the list.

Few trucks use River Street: 4.3% of its traffic, under half the county's 25.8%.

Trips on River Street are short, a median of 25.1 minutes against 48.6 county-wide, so it serves mostly local traffic.

Drivers on River Street are noticeably older, with a median age of 58.9 against 50.2 across the county.

Ranked by daily traffic (AADT)

Only named roads are listed. Some unnamed segments, such as ramps or unlabeled carriageways, may carry as much traffic as the roads shown.

Cars and light vehiclesTrucks
1I 90Motorway · 6,847vehicles1,853trucks · 27.1%
Road class
Motorway
Congestion ratio
8.8%
Median trip time
60.2 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$69,842

I 90 peaks at 6,847 vehicles a day, 3.5 times the county average; trucks are 27.1% of it, in line with the county-wide 25.8%.

2River StreetTertiary road · 3,007vehicles130trucks · 4.3%
Road class
Tertiary road
Congestion ratio
6.6%
Median trip time
25.1 min
Drivers’ median age
58.9 yrs
Drivers’ average income
$51,062

River Street peaks at 3,007 vehicles a day, 54% more than the county average; trucks are 4.3% of it, below the county-wide 25.8%.

3MT 135Primary road · 2,420vehicles233trucks · 9.6%
Road class
Primary road
Congestion ratio
5.0%
Median trip time
46.8 min
Drivers’ median age
56.5 yrs
Drivers’ average income
$66,200

MT 135 carries 24% more than the county average at its busiest, 233 of them trucks (9.6%, below the county-wide 25.8%).

4Diamond RoadSecondary road · 2,031vehicles162trucks · 8.0%
Road class
Secondary road
Median trip time
27.6 min
Drivers’ median age
57.6 yrs
Drivers’ average income
$55,348

Diamond Road is a local road at heart: the median trip using it lasts 27.6 minutes, against 48.6 for the county.

5Mullan Gulch RoadTertiary road · 486vehicles27trucks · 5.6%
Road class
Tertiary road
Congestion ratio
3.8%
Median trip time
54.6 min
Drivers’ median age
57.1 yrs
Drivers’ average income
$69,471

Mullan Gulch Road is a quieter road: its busiest stretch carries 75% less than the county average; trucks are 5.6% of it, below the county-wide 25.8%.

Ranked by trucks per day

Only named roads are listed. Some unnamed segments, such as ramps or unlabeled carriageways, may carry as much traffic as the roads shown.

Cars and light vehiclesTrucks
1I 90Motorway · #1 by traffic6,847vehicles1,853trucks · 27.1%
2MT 135Primary road · #3 by traffic2,420vehicles233trucks · 9.6%
3Diamond RoadSecondary road · #4 by traffic2,031vehicles162trucks · 8.0%
4River StreetTertiary road · #2 by traffic3,007vehicles130trucks · 4.3%
5Mullan Gulch RoadTertiary road · #5 by traffic486vehicles27trucks · 5.6%
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

MineralDepartment 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 Mineral County

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

Need segment-level traffic data?

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