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Traffic heat map of Deer Lodge County, Montana: 115 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 90 and MT 1

Deer Lodge County, Montana Traffic Counts

Our Deer Lodge County, Montana traffic data covers 554 road segments over 115 road miles, with an average segment of just 1,091 ft. Its average highway carries more trucks than in any other county in Montana, about 1,388 a day. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 Deer Lodge County, Montana

Traffic

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

vehicles per day2,197
Trucks

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

17.0%
Average travel time

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

32.2 min
Congestion ratio

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

8.2%
Drivers’ average age

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

51.6 yrs
Drivers’ average income

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

$61,661

Our data shows 2,197 vehicles per day on the average road in Deer Lodge County, Montana, and 298,401 vehicle-miles traveled per day (≈109 million per year) across its 115 miles of monitored roads. Trucks are 17.0% of traffic, more than the 11.7% across Montana.

Shorter trips than 89% of counties in Montana

Deer Lodge's average daily traffic volume is 48% lower than the state average - 2,197 vehicles per day against 4,202 - suggesting less traffic load per road - less drive-by exposure for retail, but easier access for deliveries. Network-wide, Deer Lodge accounts for about 1.0% of Montana's statewide total of vehicle-miles. By volume, Deer Lodge's 2,197 vehicles per day outpaces 65% of counties in Montana.

At 32.2 minutes, the average travel time is 11% lower than the state level. On travel time, Deer Lodge runs shorter than 89% of counties in Montana.

Congestion runs 33% lower than the state level, at a ratio of 8.2%, which means smoother traffic flow - fewer delays make delivery windows more reliable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Deer Lodge County, Montana

Trafficvehicles per day5,808
Trucks23.4%
Average travel time43.4 min
Congestion ratio14.0%
Drivers’ average age49.3 yrs
Drivers’ average income$75,042

A little more than half of the driving in Deer Lodge County, Montana happens on highways: 58% of all vehicle-miles. The average highway carries 5,808 vehicles per day, 197% more than the average non-highway road in the same area, which carries 1,953 vehicles per day.

With 25% of the road miles (29 miles in 35 segments), highways punch above their length, carrying 172,077 vehicle-miles traveled per day (≈62.8 million per year).

The most highway trucks of any county in Montana

At 23.4%, highway truck share is 56% higher than the state average. That marks Deer Lodge as a major freight corridor, where highway access is what logistics operators compete on.

98% of counties in Montana see a lower highway truck share than Deer Lodge's 23.4%. Deer Lodge also moves the highest raw count of highway trucks in Montana, at roughly 1,388 per day.

non-highway traffic icon

Non-highway Traffic in Deer Lodge County, Montana

Trafficvehicles per day1,953
Trucks8.2%
Average travel time31.4 min
Congestion ratio7.8%
Drivers’ average age52.0 yrs
Drivers’ average income$57,694

Local roads carry a significant share of travel in Deer Lodge County, Montana: 42% of all vehicle-miles. On the average non-highway road, that comes to 1,953 vehicles per day.

Spread over 86 miles and 519 segments, 75% of the road network, local roads carry a lighter load per mile: 126,325 vehicle-miles traveled per day (≈46.1 million per year). The truck share on non-highway roads is 8.2%.

Drivers from lower-income areas than 69% of counties in Montana

The concentration of trucks on non-highway roads is 65% lower than on highways.

The non-highway congestion ratio of 7.8% is 36% lower than the state level, suggesting more efficient local mobility than the state average.

Trip origins here have lower average income than 69% of counties in Montana. The driver population here skews older than 56% of counties in Montana.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
A long morning plateau from 8:00 AM to 12:00 PM and a long afternoon plateau from 2:00 PM to 6:00 PM, with volumes reaching approximately 74% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 19% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +17% versus the annual average.
Lowest month:
January is the quietest month, with volumes -21% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Deer Lodge County, Montana, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +17% in high season.

Deer Lodge County vs. Montana Traffic Comparison

Of the four measures, highway truck share differs most: Deer Lodge County runs 56% above the Montana average. Its average daily traffic per road, by contrast, is 48% below.

MetricDeer Lodge CountyMontana averageDifference
Traffic2,1974,202-47.7%
Truck % (Total Traffic)17.0%11.7%+45.3%
Truck % (Highway)23.4%15.0%+56.1%
Avg. Travel Time32.2 min36.2 min-11.1%

How Deer Lodge County compares

Deer Lodge County moves the least traffic of its nearby counties

Compared with its 4 closest neighbours, Deer Lodge County moves 41.9% of the total daily travel; it has the third busiest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Deer Lodge 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
Deer Lodge County2,19717.0%298,40132.2 min8.2%
Silver Bow County, Montana4,14712.6%726,86738.7 min11.7%
Granite County, Montana1,47919.0%486,49929.9 min5.1%
Ravalli County, Montana4,6856.2%709,40431.9 min10.1%
Jefferson County, Montana1,88716.4%929,06738.2 min6.4%
Montana average4,20211.7%N/A36.2 min12.3%

Deer Lodge County ranked within Montana

No other county-level area in Montana records a higher highway truck volume than Deer Lodge County.

Deer Lodge County ranked among 56 county-level areas in Montana (1 = highest); measures without data in every county rank a smaller field, down to 47.
MeasureDeer Lodge CountyMontana rank
Traffic volume (AADT)2,197#20 of 56
Highway vehicle-miles per day172,077#27 of 47
Truck share on highways23.4%#2 of 47
Highway trucks per day1,358#1 of 47
Average travel time32.2 min#50 of 56
Average driver income$61,661#39 of 56
Average driver age51.6 yrs#25 of 56

Deer Lodge County ranks #1 of 47 on highway truck volume but #50 of 56 on average travel time - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Deer Lodge County, Montana

The three busiest roads in Deer Lodge County average 7,865 vehicles a day, 3.6 times the county average of 2,197 across all its monitored roads.

I 90 leads with 11,736 vehicles a day, 2,745 of them trucks (23.4%). No other road comes close: MT 1, in second place, carries 6,207. It also carries the most trucks.

Few trucks use Park Avenue: 6.5% of its traffic, under half the county's 17.0%.

Trips using I 90 are long: a median of 43.4 minutes against 32.2 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 90Motorway · 11,736vehicles2,745trucks · 23.4%
Road class
Motorway
Congestion ratio
14.0%
Median trip time
43.4 min
Drivers’ median age
49.3 yrs
Drivers’ average income
$75,042

I 90 carries 5.3 times the county average on its busiest stretch, where the median trip lasts 43.4 minutes.

2MT 1Primary road · 6,207vehicles501trucks · 8.1%
Road class
Primary road
Congestion ratio
6.4%
Median trip time
34.7 min
Drivers’ median age
51.2 yrs
Drivers’ average income
$56,412

MT 1 carries 2.8 times the county average at its busiest, 501 of them trucks (8.1%, below the county-wide 17.0%).

3Park AvenuePrimary road · 5,653vehicles365trucks · 6.5%
Road class
Primary road
Congestion ratio
13.0%
Median trip time
27.3 min
Drivers’ median age
52.0 yrs
Drivers’ average income
$57,143

Park Avenue carries 2.6 times the county average on its busiest stretch, where the median trip lasts 27.3 minutes.

4Commercial AvenuePrimary road · 5,618vehicles325trucks · 5.8%
Road class
Primary road
Congestion ratio
12.8%
Median trip time
39.0 min
Drivers’ median age
50.8 yrs
Drivers’ average income
$56,918

At 2.6 times the county average, Commercial Avenue draws drivers from neighborhoods averaging $56,918 in household income.

5Frontage RoadPrimary road · 2,727vehicles294trucks · 10.8%
Road class
Primary road
Congestion ratio
5.9%
Median trip time
32.6 min
Drivers’ median age
50.0 yrs
Drivers’ average income
$63,103

Frontage Road is busy by local standards, at 24% more than the county average on its busiest stretch; trucks are 10.8% of it, below the county-wide 17.0%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 90Motorway · #1 by traffic11,736vehicles2,745trucks · 23.4%
2MT 1Primary road · #2 by traffic6,207vehicles501trucks · 8.1%
3Park AvenuePrimary road · #3 by traffic5,653vehicles365trucks · 6.5%
4Commercial AvenuePrimary road · #4 by traffic5,618vehicles325trucks · 5.8%
5Frontage RoadPrimary road · #5 by traffic2,727vehicles294trucks · 10.8%
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

Deer LodgeDepartment 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 Deer Lodge County

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

Need segment-level traffic data?

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