
Total Traffic Volume & Performance in Valley County, Idaho
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,780 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 7.5% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 23.3 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. | 9.7% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 55.6 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $73,996 |
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A typical monitored road in Valley County, Idaho sees 3,780 vehicles per day, while its 153 miles of monitored roads together handle 421,438 vehicle-miles traveled per day (≈154 million per year). Trucks are a smaller part of the mix than across Idaho: 7.5% against 9.7%.
The shortest trips of any county in Idaho
Valley's average daily traffic volume is 34% lower than the state average - 3,780 vehicles per day against 5,734 - suggesting less traffic load per road - less drive-by exposure for retail, but easier access for deliveries. Network-wide, Valley accounts for about 0.9% of Idaho's statewide total of vehicle-miles. By volume, Valley's 3,780 vehicles per day outpaces 63% of counties in Idaho.
At 23.3 minutes, the average travel time is 31% lower than the state level. It also posts the lowest average travel time in Idaho, at 23.3 minutes.
At 39% lower than the state level, the 9.7% congestion ratio signals smoother traffic flow - fewer delays make delivery windows more reliable.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Valley County, Idaho
| Traffic | vehicles per day7,502 |
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| Trucks | 8.3% |
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| Average travel time | 27.9 min |
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| Congestion ratio | 16.4% |
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| Drivers’ average age | 55.9 yrs |
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| Drivers’ average income | $74,445 |
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Highways carry most of the traffic in Valley County, Idaho: 77% of all vehicle-miles. The average highway carries 7,502 vehicles per day, 368% more than the average non-highway road in the same area, which carries 1,604 vehicles per day.
Highways make up 42% of the monitored road miles (63 miles, 594 segments), so they carry more than their share: 324,368 vehicle-miles traveled per day (≈118 million per year).
Lower highway truck share than 97% of counties in Idaho
The concentration of trucks on highways (8.3%) is 41% lower than the state average for similar road classifications. Highways here carry mainly commuter and local trips, with little through freight.
By truck concentration, highways here trail 97% of counties in Idaho. By raw truck volume, Valley carries fewer highway trucks than 68% of counties in Idaho.

Non-highway Traffic in Valley County, Idaho
| Traffic | vehicles per day1,604 |
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| Trucks | 4.7% |
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| Average travel time | 20.6 min |
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| Congestion ratio | 5.8% |
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| Drivers’ average age | 54.8 yrs |
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| Drivers’ average income | $72,874 |
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Local roads carry a smaller share of travel in Valley County, Idaho, 23% of vehicle-miles; most driving happens on highways. On the average non-highway road, that comes to 1,604 vehicles per day.
Local roads make up 58% of the monitored road miles (89 miles in 1,016 segments) but carry less than their share of travel: 97,070 vehicle-miles traveled per day (≈35.4 million per year). The truck share on non-highway roads is 4.7%.
Older drivers than 91% of counties in Idaho
Non-highway roads carry a truck concentration that's 43% lower than the highway network.
Non-highway congestion (5.8%) runs 65% lower than the state average, pointing to smoother local traffic flow.
72% of counties in Idaho see lower average driver income among trip origins than Valley. 91% of counties in Idaho have a younger driver population than Valley.