
Total Traffic Volume & Performance in Butte County, South Dakota
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,086 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 11.1% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 31.6 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. | 3.4% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 50.2 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $74,708 |
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Our data shows 3,086 vehicles per day on the average road in Butte County, South Dakota, and 275,972 vehicle-miles traveled per day (≈101 million per year) across its 232 miles of monitored roads. About 1 in 9 vehicles is a truck, in line with South Dakota (10.3%).
Congestion 74% below the South Dakota average
Butte's average daily traffic volume of 3,086 vehicles per day is on par with the state average of 3,156. In total volume terms, its road network carries about 1.1% of South Dakota's statewide total of vehicle-miles. Butte carries more traffic than 86% of counties in South Dakota.
The average trip takes 31.6 minutes, on par with the state level. 78% of counties in South Dakota have a longer average travel time than Butte's 31.6 minutes.
At 74% lower than the state level, the 3.4% congestion ratio signals smoother traffic flow - delays are rare enough to plan travel times almost to the minute.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Butte County, South Dakota
| Traffic | vehicles per day8,248 |
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| Trucks | 12.8% |
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| Average travel time | 30.2 min |
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| Congestion ratio | 3.4% |
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| Drivers’ average age | 50.0 yrs |
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| Drivers’ average income | $73,170 |
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Highways carry about half of all travel in Butte County, South Dakota, 53% of vehicle-miles. The average highway carries 8,248 vehicles per day, 439% more than the average non-highway road in the same area, which carries 1,530 vehicles per day.
Highways make up 28% of the monitored road miles (66 miles, 301 segments), so they carry more than their share: 145,229 vehicle-miles traveled per day (≈53.0 million per year).
52% of counties in South Dakota move less traffic on their highways.
Lower highway truck share than 65% of counties in South Dakota
Highway truck concentration here runs 6% lower than the state average, at 12.8%. The highway traffic mix is typical for South Dakota: neither freight- nor commuter-dominated.
65% of counties in South Dakota see a higher highway truck share than Butte's 12.8%. By raw truck volume, Butte carries fewer highway trucks than 62% of counties in South Dakota.

Non-highway Traffic in Butte County, South Dakota
| Traffic | vehicles per day1,530 |
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| Trucks | 9.2% |
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| Average travel time | 32.0 min |
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| Drivers’ average age | 51.1 yrs |
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| Drivers’ average income | $76,574 |
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Local roads carry about half of all travel in Butte County, South Dakota, 47% of vehicle-miles. A typical local road sees 1,530 vehicles per day.
Local roads make up 72% of the monitored road miles (166 miles in 998 segments) but carry less than their share of travel: 130,743 vehicle-miles traveled per day (≈47.7 million per year). The truck share on non-highway roads is 9.2%.
Drivers from higher-income areas than 68% of counties in South Dakota
The concentration of trucks on non-highway roads is 28% lower than on highways.
Butte's average driver income is higher than 68% of counties in South Dakota. Butte's median driver age is higher than 57% of counties in South Dakota.