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Traffic heat map of Broadwater County, Montana: 123 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 90 and Front Street

Broadwater County, Montana Traffic Counts

How busy are the roads of Broadwater County, Montana? We measure 123 road miles, divided into 612 segments, with multi-sourced, cross-verified mobile and sensor data. Its busiest road, I 90, carries 13,342 vehicles a day, 3.4 times the average road. 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 Broadwater County, Montana

Traffic

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

vehicles per day3,922
Trucks

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

13.6%
Average travel time

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

43.1 min
Congestion ratio

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

10.0%
Drivers’ average age

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

50.7 yrs
Drivers’ average income

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

$69,341

A typical monitored road in Broadwater County, Montana sees 3,922 vehicles per day, while its 123 miles of monitored roads together handle 474,637 vehicle-miles traveled per day (≈173 million per year). At 13.6%, the truck share runs above the 11.7% across Montana: about 1 in 7 vehicles.

Busier roads than 84% of counties in Montana

At 3,922 vehicles per day, the average road in Broadwater carries somewhat less traffic than the state average of 4,202 (7% less). Network-wide, Broadwater accounts for about 1.7% of Montana's statewide total of vehicle-miles. 84% of counties in Montana see less traffic than Broadwater's 3,922 vehicles per day.

At 43.1 minutes, the average travel time is 19% higher than the state level. 73% of counties in Montana have a shorter average travel time than Broadwater's 43.1 minutes.

Congestion runs 18% lower than the state level, at a ratio of 10.0%, which means smoother traffic flow - crucial for traffic control improvement and logistics planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Broadwater County, Montana

Trafficvehicles per day6,222
Trucks14.0%
Average travel time51.5 min
Congestion ratio13.9%
Drivers’ average age50.6 yrs
Drivers’ average income$69,607

Nearly all driving in Broadwater County, Montana happens on highways: 92% of every vehicle-mile. The average highway carries 6,222 vehicles per day, 495% more than the average non-highway road in the same area, which carries 1,046 vehicles per day.

Highways make up 58% of the monitored road miles (71 miles, 340 segments), so they carry more than their share: 434,920 vehicle-miles traveled per day (≈159 million per year).

By highway travel volume, Broadwater outranks 67% of counties in Montana.

More highway trucks than 80% of counties in Montana

At 14.0%, highway truck share is 7% lower than the state average. The highway traffic mix is typical for Montana: neither freight- nor commuter-dominated.

Broadwater's highway truck share (14.0%) is lower than 54% of counties in Montana. Broadwater's highway truck count is higher than 80% of counties in Montana, at roughly 870 trucks per day.

non-highway traffic icon

Non-highway Traffic in Broadwater County, Montana

Trafficvehicles per day1,046
Trucks8.8%
Average travel time32.7 min
Congestion ratio5.1%
Drivers’ average age52.2 yrs
Drivers’ average income$67,387

Only a small share of travel in Broadwater County, Montana happens on local roads: 8% of vehicle-miles. The average non-highway road carries 1,046 vehicles per day.

Spread over 52 miles and 272 segments, 42% of the road network, local roads carry a lighter load per mile: 39,717 vehicle-miles traveled per day (≈14.5 million per year). Trucks make up 8.8% of non-highway traffic, about 1 in 11 vehicles.

Local congestion 58% below the Montana average

The concentration of trucks on non-highway roads is 37% lower than on highways.

Non-highway congestion (5.1%) runs 58% lower than the state average, pointing to smoother local traffic flow.

Broadwater's average driver income is higher than 58% of counties in Montana. 53% of counties in Montana have a younger driver population than Broadwater.

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 PM peak 5:00 PM–6:00 PM, with volumes reaching approximately 101% higher than the daily average.
Weekend traffic:
Weekend traffic is about as busy as on weekdays (-2%): leisure and through trips largely replace the commute.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +20% versus the annual average.
Lowest month:
January is the quietest month, with volumes -23% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Broadwater County, Montana, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +20% in high season.

Broadwater County vs. Montana Traffic Comparison

Of the four measures, average travel time differs most: Broadwater County runs 19% above the Montana average. Its truck share is also 16% above.

MetricBroadwater CountyMontana averageDifference
Traffic3,9224,202-6.7%
Truck % (Total Traffic)13.6%11.7%+16.2%
Truck % (Highway)14.0%15.0%-6.6%
Avg. Travel Time43.1 min36.2 min+19.3%

How Broadwater County compares

Trips in Broadwater County run longer than in any nearby county

Against the 4 nearest areas, Broadwater County carries 57.5% more traffic on a typical road; it has the second busiest roads of the five.

Broadwater 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
Broadwater County3,92213.6%474,63743.1 min10.0%
Meagher County, Montana9519.4%38,66838.5 min4.1%
Jefferson County, Montana1,88716.4%929,06738.2 min6.4%
Cascade County, Montana4,2668.0%1,339,08735.6 min13.9%
Park County, Montana2,85815.1%797,61336.6 min10.1%
Montana average4,20211.7%N/A36.2 min12.3%

Broadwater County ranked within Montana

Broadwater County sits in the top quarter of the Montana field on average daily traffic volume, at #10 of 56.

Broadwater County ranked among 56 county-level areas in Montana (1 = highest); measures without data in every county rank a smaller field, down to 47.
MeasureBroadwater CountyMontana rank
Traffic volume (AADT)3,922#10 of 56
Highway vehicle-miles per day434,920#16 of 47
Truck share on highways14.0%#26 of 47
Highway trucks per day870#10 of 47
Average travel time43.1 min#16 of 56
Average driver income$69,341#24 of 56
Average driver age50.7 yrs#27 of 56

Busiest roads in Broadwater County, Montana

On their busiest stretches, the three busiest roads in Broadwater County carry 9,203 vehicles a day on average, 2.3 times the typical road in the county (3,922).

I 90 is the busiest road, at 13,342 vehicles a day, 2,800 of them trucks (21.0%). No other road comes close: Front Street, in second place, carries 7,527. It also carries the most trucks.

Missouri Street carries longer journeys than most roads here, with a median trip of 58.0 minutes against 43.1 county-wide.

Freight stands out on I 90: trucks are 21.0% of the traffic there, against 13.6% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 90Motorway · 13,342vehicles2,800trucks · 21.0%
Road class
Motorway
Median trip time
46.8 min
Drivers’ median age
45.3 yrs
Drivers’ average income
$73,673

I 90 carries 3.4 times the county average at its busiest, 2,800 of them trucks (21.0%, above the county-wide 13.6%).

2Front StreetTrunk road · 7,527vehicles523trucks · 7.0%
Road class
Trunk road
Congestion ratio
22.1%
Median trip time
46.9 min
Drivers’ median age
51.2 yrs
Drivers’ average income
$64,953

Front Street is one of the more congested roads here: trips take 22% longer than at free-flow speed, against 10% county-wide.

3US 12Trunk road · 6,741vehicles586trucks · 8.7%
Road class
Trunk road
Congestion ratio
12.0%
Median trip time
46.9 min
Drivers’ median age
50.3 yrs
Drivers’ average income
$65,486

US 12 carries 72% more than the county average on its busiest stretch, where the median trip lasts 46.9 minutes.

4US 287Trunk road · 6,511vehicles730trucks · 11.2%
Road class
Trunk road
Congestion ratio
10.0%
Median trip time
53.6 min
Drivers’ median age
52.5 yrs
Drivers’ average income
$66,035

At 66% more than the county average, US 287 draws drivers from neighborhoods averaging $66,035 in household income.

5Missouri StreetTrunk road · 5,171vehicles625trucks · 12.1%
Road class
Trunk road
Median trip time
58.0 min
Drivers’ median age
49.7 yrs
Drivers’ average income
$67,602

Missouri Street is busy by local standards, at 32% more than the county average on its busiest stretch; trucks are 12.1% of it, below the county-wide 13.6%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 90Motorway · #1 by traffic13,342vehicles2,800trucks · 21.0%
2US 287Trunk road · #4 by traffic6,511vehicles730trucks · 11.2%
3Missouri StreetTrunk road · #5 by traffic5,171vehicles625trucks · 12.1%
4MT 287Trunk road · 4,944vehicles593trucks · 12.0%
Road class
Trunk road
Congestion ratio
10.1%
Median trip time
54.5 min
Drivers’ median age
49.0 yrs
Drivers’ average income
$68,402

MT 287 peaks at 4,944 vehicles a day, 26% more than the county average; trucks are 12.0% of it, below the county-wide 13.6%.

5US 12Trunk road · #3 by traffic6,741vehicles586trucks · 8.7%
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

BroadwaterDepartment 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 Broadwater County

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

Need segment-level traffic data?

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