
Total Traffic Volume & Performance in Louisa County, Iowa
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day1,180 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 10.7% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 38.6 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. | 5.3% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 50.6 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $76,735 |
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Our data shows 1,180 vehicles per day on the average road in Louisa County, Iowa, and 238,874 vehicle-miles traveled per day (≈87.2 million per year) across its 193 miles of monitored roads. About 1 in 9 vehicles is a truck, in line with Iowa (11.0%).
Longer trips than 90% of counties in Iowa
At 1,180 vehicles per day, the average monitored road in Louisa carries 61% less traffic than the state average of 3,042, suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. Network-wide, Louisa accounts for about 0.3% of Iowa's statewide total of vehicle-miles. By volume, Louisa's 1,180 vehicles per day trails 85% of counties in Iowa.
Journey times run 17% higher than the state level, at 38.6 minutes on average. Its average travel time of 38.6 minutes is longer than 90% of counties in Iowa.
At 54% lower than the state level, the 5.3% congestion ratio signals smoother traffic flow - free-flowing roads make scheduled deliveries highly predictable.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Louisa County, Iowa
| Traffic | vehicles per day4,568 |
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| Trucks | 12.2% |
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| Average travel time | 44.9 min |
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| Congestion ratio | 11.9% |
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| Drivers’ average age | 51.2 yrs |
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| Drivers’ average income | $72,418 |
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Highways carry a significant share of travel in Louisa County, Iowa: 41% of all vehicle-miles. The average highway carries 4,568 vehicles per day, 415% more than the average non-highway road in the same area, which carries 888 vehicles per day.
That comes from just 13% of the monitored road miles: 24 miles in 159 segments, carrying 98,993 vehicle-miles traveled per day (≈36.1 million per year).
Lower highway truck share than 78% of counties in Iowa
The concentration of trucks on highways (12.2%) is 25% 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 78% of counties in Iowa. 78% of counties in Iowa see more highway trucks per day than Louisa's roughly 555.

Non-highway Traffic in Louisa County, Iowa
| Traffic | vehicles per day888 |
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| Trucks | 9.7% |
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| Average travel time | 38.1 min |
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| Congestion ratio | 4.7% |
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| Drivers’ average age | 49.9 yrs |
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| Drivers’ average income | $79,376 |
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Local roads carry more than half of all travel in Louisa County, Iowa (59% of vehicle-miles). The average non-highway road carries 888 vehicles per day.
Local roads make up 87% of the monitored road miles (169 miles in 1,840 segments) but carry less than their share of travel: 139,881 vehicle-miles traveled per day (≈51.1 million per year). About 1 in 10 vehicles on non-highway roads is a truck (9.7%).
Local congestion 57% below the Iowa average
The concentration of trucks on non-highway roads is 20% lower than on highways.
Non-highway congestion (4.7%) runs 57% lower than the state average, pointing to smoother local traffic flow.
63% of counties in Iowa see lower average driver income among trip origins than Louisa. Louisa's median driver age is higher than 54% of counties in Iowa.