
Total Traffic Volume & Performance in Lake County, Montana
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day4,307 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 9.1% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 39.6 min |
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Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 10.6% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 49.0 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $62,720 |
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Our data shows 4,307 vehicles per day on the average road in Lake County, Montana, and 875,237 vehicle-miles traveled per day (≈319 million per year) across its 208 miles of monitored roads. Trucks are a smaller part of the mix than across Montana: 9.1% against 11.7%.
Busier roads than 89% of counties in Montana
At 4,307 vehicles per day, the average road in Lake tracks closely with the state average of 4,202 vehicles per day. In total volume terms, its road network carries about 3.1% of Montana's statewide total of vehicle-miles. Lake carries more traffic than 89% of counties in Montana.
Journey times run 9% higher than the state level, at 39.6 minutes on average. 51% of counties in Montana have a shorter average travel time than Lake's 39.6 minutes.
Congestion is somewhat lower than the state level, at a ratio of 10.6% (14% lower) - crucial for traffic control improvement and logistics planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Lake County, Montana
| Traffic | vehicles per day7,678 |
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| Trucks | 9.6% |
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| Average travel time | 45.4 min |
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| Congestion ratio | 17.7% |
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| Drivers’ average age | 48.4 yrs |
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| Drivers’ average income | $63,219 |
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Most travel in Lake County, Montana happens on highways, 73% of all vehicle-miles. The average highway carries 7,678 vehicles per day, 237% more than the average non-highway road in the same area, which carries 2,281 vehicles per day.
With 45% of the road miles (95 miles in 724 segments), highways punch above their length, carrying 640,435 vehicle-miles traveled per day (≈234 million per year).
By highway travel volume, Lake outranks 83% of counties in Montana.
Lower highway truck share than 98% of counties in Montana
Highway truck concentration here runs 36% lower than the state average, at 9.6%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
Lake's highway truck share (9.6%) is lower than 98% of counties in Montana. Lake's highway truck count is higher than 74% of counties in Montana, at roughly 736 trucks per day.

Non-highway Traffic in Lake County, Montana
| Traffic | vehicles per day2,281 |
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| Trucks | 7.7% |
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| Average travel time | 36.1 min |
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| Congestion ratio | 6.3% |
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| Drivers’ average age | 52.9 yrs |
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| Drivers’ average income | $61,125 |
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Local roads carry a smaller share of travel in Lake County, Montana, 27% of vehicle-miles; most driving happens on highways. The average non-highway road carries 2,281 vehicles per day.
Local roads make up 55% of the monitored road miles (113 miles in 1,205 segments) but carry less than their share of travel: 234,803 vehicle-miles traveled per day (≈85.7 million per year). The truck share on non-highway roads is 7.7%.
Local congestion 48% below the Montana average
The concentration of trucks on non-highway roads is 20% lower than on highways.
Non-highway congestion (6.3%) runs 48% lower than the state average, pointing to smoother local traffic flow.
60% of counties in Montana see higher average driver income among trip origins than Lake. The driver population here skews younger than 64% of counties in Montana.