
Total Traffic Volume & Performance in Harrison County, Indiana
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,137 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 13.5% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 29.5 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. | 10.8% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 48.5 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $75,612 |
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The average monitored road in Harrison County, Indiana carries 3,137 vehicles per day. Across its 251 miles of monitored roads, that adds up to 1,172,799 vehicle-miles traveled per day (≈428 million per year). Trucks are 13.5% of traffic, close to the 12.1% across Indiana.
Shorter trips than 98% of counties in Indiana
At 3,137 vehicles per day, the average monitored road in Harrison carries 45% less traffic than the state average of 5,704, suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. In total volume terms, its road network carries about 0.7% of Indiana's statewide total of vehicle-miles. Harrison carries less traffic than 66% of counties in Indiana.
At 29.5 minutes, the average travel time is 12% lower than the state level. Its average travel time of 29.5 minutes is shorter than 98% of counties in Indiana.
The congestion ratio of 10.8% is 31% lower, pointing to smoother traffic flow than the state level - travel times are easy to plan around for scheduled deliveries.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Harrison County, Indiana
| Traffic | vehicles per day7,435 |
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| Trucks | 16.6% |
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| Average travel time | 39.6 min |
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| Congestion ratio | 17.4% |
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| Drivers’ average age | 48.1 yrs |
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| Drivers’ average income | $73,382 |
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A little more than half of the driving in Harrison County, Indiana happens on highways: 66% of all vehicle-miles. The average highway carries 7,435 vehicles per day, 171% more than the average non-highway road in the same area, which carries 2,739 vehicles per day.
With 29% of the road miles (72 miles in 295 segments), highways punch above their length, carrying 771,622 vehicle-miles traveled per day (≈282 million per year).
That is more highway travel volume than 60% of counties in Indiana.
Lower highway truck share than 69% of counties in Indiana
The concentration of trucks on highways (16.6%) is 15% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
By truck concentration, highways here trail 69% of counties in Indiana. By raw truck volume, Harrison carries fewer highway trucks than 63% of counties in Indiana.

Non-highway Traffic in Harrison County, Indiana
| Traffic | vehicles per day2,739 |
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| Trucks | 7.4% |
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| Average travel time | 28.5 min |
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| Congestion ratio | 10.2% |
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| Drivers’ average age | 48.7 yrs |
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| Drivers’ average income | $77,508 |
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Local roads carry a significant share of travel in Harrison County, Indiana: 34% of all vehicle-miles. On the average non-highway road, that comes to 2,739 vehicles per day.
Spread over 179 miles and 3,190 segments, 71% of the road network, local roads carry a lighter load per mile: 401,177 vehicle-miles traveled per day (≈146 million per year). The truck share on non-highway roads is 7.4%.
Local congestion 33% below the Indiana average
The concentration of trucks on non-highway roads is 55% lower than on highways.
At 33% 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 55% of counties in Indiana. The driver population here skews older than 60% of counties in Indiana.