Need segment-level traffic data?

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

Get insights →
Traffic heat map of Silver Bow County, Montana: 204 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Montana Street and I 15

Silver Bow County, Montana Traffic Counts

Traffic analytics for Silver Bow County, Montana, calculated from real-world mobile and sensor networks on 2,703 road segments (204 road miles, about 399 ft each). Its busiest road, Montana Street, carries 17,307 vehicles a day, 4.2 times the average road. 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
Find my place
total traffic icon

Total Traffic Volume & Performance in Silver Bow County, Montana

Traffic

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

vehicles per day4,147
Trucks

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

12.6%
Average travel time

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

38.7 min
Congestion ratio

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

11.7%
Drivers’ average age

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

48.2 yrs
Drivers’ average income

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

$64,975

The average monitored road in Silver Bow County, Montana carries 4,147 vehicles per day. Across its 204 miles of monitored roads, that adds up to 726,867 vehicle-miles traveled per day (≈265 million per year). Trucks are 12.6% of traffic, close to the 11.7% across Montana.

Busier roads than 85% of counties in Montana

Silver Bow's average daily traffic volume of 4,147 vehicles per day is on par with the state average of 4,202. In total volume terms, its road network carries about 2.6% of Montana's statewide total of vehicle-miles. Silver Bow carries more traffic than 85% of counties in Montana.

At 38.7 minutes, the average travel time is 7% higher than the state level. 56% of counties in Montana have a longer average travel time than Silver Bow's 38.7 minutes.

At 11.7%, the congestion ratio matches the state level closely.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Silver Bow County, Montana

Trafficvehicles per day4,528
Trucks17.0%
Average travel time31.2 min
Congestion ratio10.9%
Drivers’ average age49.5 yrs
Drivers’ average income$70,444

A little more than half of the driving in Silver Bow County, Montana happens on highways: 64% of all vehicle-miles. The average highway carries 4,528 vehicles per day, 10% more than the average non-highway road in the same area, which carries 4,117 vehicles per day.

Their share of road miles is similar, 57% (116 miles in 195 segments), carrying 463,404 vehicle-miles traveled per day (≈169 million per year).

72% of counties in Montana move less traffic on their highways.

More highway trucks than 76% of counties in Montana

Highway truck concentration here runs 13% higher than the state average, at 17.0%. The highway traffic mix is typical for Montana: neither freight- nor commuter-dominated.

Silver Bow's highway truck share (17.0%) is higher than 63% of counties in Montana. Silver Bow's highway truck count is higher than 76% of counties in Montana, at roughly 769 trucks per day.

non-highway traffic icon

Non-highway Traffic in Silver Bow County, Montana

Trafficvehicles per day4,117
Trucks5.0%
Average travel time39.3 min
Congestion ratio11.8%
Drivers’ average age48.0 yrs
Drivers’ average income$62,966

Local roads carry a significant share of travel in Silver Bow County, Montana: 36% of all vehicle-miles. A typical local road sees 4,117 vehicles per day.

Their share of road miles is similar, 43% (88 miles in 2,508 segments), carrying 263,463 vehicle-miles traveled per day (≈96.2 million per year). About 1 in 20 vehicles on non-highway roads is a truck (5.0%).

Younger drivers than 75% of counties in Montana

Compared to highways, non-highway routes see 71% fewer trucks by share.

At 11.8%, the non-highway congestion ratio matches the state level closely.

Trip origins here have lower average income than 56% of counties in Montana. The driver population here skews younger than 75% of counties in Montana.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 3:00 PM–6:00 PM, with volumes reaching approximately 63% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 6% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +22% versus the annual average.
Lowest month:
January is the quietest month, with volumes -29% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Silver Bow County, Montana, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +22% in high season.

Silver Bow County vs. Montana Traffic Comparison

Silver Bow County stays close to the Montana average; the largest gap is its highway truck share, 13% above.

MetricSilver Bow CountyMontana averageDifference
Traffic4,1474,202-1.3%
Truck % (Total Traffic)12.6%11.7%+8.1%
Truck % (Highway)17.0%15.0%+13.4%
Avg. Travel Time38.7 min36.2 min+7.1%

How Silver Bow County compares

Silver Bow County has the busiest roads among its nearby counties

Against the 4 nearest areas, Silver Bow County carries 130.2% more traffic on a typical road and is 78.3% 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.

Silver Bow 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
Silver Bow County4,14712.6%726,86738.7 min11.7%
Deer Lodge County, Montana2,19717.0%298,40132.2 min8.2%
Jefferson County, Montana1,88716.4%929,06738.2 min6.4%
Granite County, Montana1,47919.0%486,49929.9 min5.1%
Beaverhead County, Montana1,64315.9%448,60635.2 min6.5%
Montana average4,20211.7%N/A36.2 min12.3%

Silver Bow County ranked within Montana

Average daily traffic volume places Silver Bow County #9 of 56 in Montana - the top quarter of the state.

Silver Bow County ranked among 56 county-level areas in Montana (1 = highest); measures without data in every county rank a smaller field, down to 47.
MeasureSilver Bow CountyMontana rank
Traffic volume (AADT)4,147#9 of 56
Highway vehicle-miles per day463,404#14 of 47
Truck share on highways17.0%#18 of 47
Highway trucks per day769#12 of 47
Average travel time38.7 min#32 of 56
Average driver income$64,975#32 of 56
Average driver age48.2 yrs#42 of 56

Busiest roads in Silver Bow County, Montana

The three busiest roads in Silver Bow County average 16,664 vehicles a day, 4.0 times the county average of 4,147 across all its monitored roads.

Montana Street is the busiest road, at 17,307 vehicles a day, 889 of them trucks (5.1%). I 15 carries the most trucks, 2,761 a day (16.6% of its traffic), although it ranks #2 for all traffic.

Harrison Avenue is busy with cars rather than freight: only 4.3% of its traffic is trucks, against 12.6% county-wide.

Trucks make up 20.5% of traffic on I 90, against 12.6% across all roads in the county.

Utah Avenue carries longer journeys than most roads here, with a median trip of 52.7 minutes against 38.7 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Montana StreetSecondary road · 17,307vehicles889trucks · 5.1%
Road class
Secondary road
Congestion ratio
28.3%
Median trip time
36.3 min
Drivers’ median age
47.9 yrs
Drivers’ average income
$57,179

Montana Street is one of the more congested roads here: trips take 28% longer than at free-flow speed, against 12% county-wide.

2I 15Motorway · 16,615vehicles2,761trucks · 16.6%
Road class
Motorway
Congestion ratio
18.0%
Median trip time
29.6 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$70,685

I 15 peaks at 16,615 vehicles a day, 4.0 times the county average; trucks are 16.6% of it, above the county-wide 12.6%.

3Harrison AvenuePrimary road · 16,071vehicles688trucks · 4.3%
Road class
Primary road
Congestion ratio
25.3%
Median trip time
39.6 min
Drivers’ median age
48.2 yrs
Drivers’ average income
$62,282

Harrison Avenue carries 3.9 times the county average at its busiest, 688 of them trucks (4.3%, below the county-wide 12.6%).

4Utah AvenuePrimary road · 12,952vehicles709trucks · 5.5%
Road class
Primary road
Congestion ratio
28.9%
Median trip time
52.7 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$55,268

Delays build on Utah Avenue: its congestion ratio of 29% over free-flow time is well above the county's 12%.

5Front StreetPrimary road · 12,821vehicles691trucks · 5.4%
Road class
Primary road
Congestion ratio
22.0%
Median trip time
41.5 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$59,182

Front Street carries 3.1 times the county average on its busiest stretch, where the median trip lasts 41.5 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 15Motorway · #2 by traffic16,615vehicles2,761trucks · 16.6%
2I 90Motorway · 11,428vehicles2,338trucks · 20.5%
Road class
Motorway
Congestion ratio
15.2%
Median trip time
32.4 min
Drivers’ median age
49.7 yrs
Drivers’ average income
$67,003

At 2.8 times the county average, I 90 draws drivers from neighborhoods averaging $67,003 in household income.

3Montana StreetSecondary road · #1 by traffic17,307vehicles889trucks · 5.1%
4Utah AvenuePrimary road · #4 by traffic12,952vehicles709trucks · 5.5%
5Front StreetPrimary road · #5 by traffic12,821vehicles691trucks · 5.4%
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

Silver BowDepartment 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.
link arrow icon
Data current as of:
Q3 2026

Explore further

TrafficZoom platform

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

Counties near Silver Bow County

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

Need segment-level traffic data?

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