
Total Traffic Volume & Performance in St. Croix County, Wisconsin
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,909 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 13.6% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 29.0 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. | 11.2% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 45.9 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $100,410 |
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Our data shows 3,909 vehicles per day on the average road in St. Croix County, Wisconsin, and 3,056,780 vehicle-miles traveled per day (≈1.1 billion per year) across its 628 miles of monitored roads. At 13.6%, the truck share runs above the 10.2% across Wisconsin: about 1 in 7 vehicles.
Shorter trips than 93% of counties in Wisconsin
St. Croix's average daily traffic volume of 3,909 vehicles per day is on par with the state average of 3,802. Network-wide, St. Croix accounts for about 2.3% of Wisconsin's statewide total of vehicle-miles. St. Croix carries more traffic than 80% of counties in Wisconsin.
Journey times run 10% lower than the state level, at 29.0 minutes on average. On travel time, St. Croix runs shorter than 93% of counties in Wisconsin.
Congestion is somewhat lower than the state level, at a ratio of 11.2% (10% lower) - crucial for traffic control improvement and logistics planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in St. Croix County, Wisconsin
| Traffic | vehicles per day9,427 |
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| Trucks | 17.2% |
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| Average travel time | 44.5 min |
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| Congestion ratio | 20.1% |
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| Drivers’ average age | 45.3 yrs |
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| Drivers’ average income | $95,718 |
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Highways carry more than half of all travel in St. Croix County, Wisconsin (65% of vehicle-miles). The average highway carries 9,427 vehicles per day, 192% more than the average non-highway road in the same area, which carries 3,233 vehicles per day.
Highways make up 24% of the monitored road miles (153 miles, 698 segments), so they carry more than their share: 1,972,449 vehicle-miles traveled per day (≈720 million per year).
By highway travel volume, St. Croix outranks 91% of counties in Wisconsin.
Higher highway truck share than 77% of counties in Wisconsin
The concentration of trucks on highways (17.2%) is 17% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.
St. Croix's highway truck share (17.2%) is higher than 77% of counties in Wisconsin. St. Croix's highway truck count is higher than 72% of counties in Wisconsin, at roughly 1,624 trucks per day.

Non-highway Traffic in St. Croix County, Wisconsin
| Traffic | vehicles per day3,233 |
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| Trucks | 7.0% |
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| Average travel time | 27.1 min |
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| Congestion ratio | 10.2% |
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| Drivers’ average age | 46.4 yrs |
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| Drivers’ average income | $104,150 |
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Local roads carry a significant share of travel in St. Croix County, Wisconsin: 35% of all vehicle-miles. A typical local road sees 3,233 vehicles per day.
Spread over 475 miles and 5,692 segments, 76% of the road network, local roads carry a lighter load per mile: 1,084,331 vehicle-miles traveled per day (≈396 million per year). The truck share on non-highway roads is 7.0%.
Drivers from higher-income areas than 97% of counties in Wisconsin
The concentration of trucks on non-highway roads is 59% lower than on highways.
At 16% lower than the state level, the non-highway congestion ratio of 10.2% signals easier movement on local roads.
Trip origins here have higher average income than 97% of counties in Wisconsin. St. Croix's median driver age is lower than 89% of counties in Wisconsin.