
Total Traffic Volume & Performance in Franklin County, Iowa
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day1,360 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 15.8% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 35.0 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. | 6.1% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 51.7 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $66,929 |
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The average monitored road in Franklin County, Iowa carries 1,360 vehicles per day. Across its 313 miles of monitored roads, that adds up to 587,945 vehicle-miles traveled per day (≈215 million per year). At 15.8%, the truck share runs above the 11.0% across Iowa: about 1 in 6 vehicles.
Traffic 55% below the Iowa average
At 1,360 vehicles per day, the average monitored road in Franklin carries 55% less traffic than the state average of 3,042, suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, Franklin accounts for about 0.7% of Iowa's statewide total of vehicle-miles. By volume, Franklin's 1,360 vehicles per day trails 68% of counties in Iowa.
At 35.0 minutes, the average travel time is 6% higher than the state level. 70% of counties in Iowa have a shorter average travel time than Franklin's 35.0 minutes.
At 46% lower than the state level, the 6.1% congestion ratio signals smoother traffic flow - travel times are easy to plan around for scheduled deliveries.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Franklin County, Iowa
| Traffic | vehicles per day6,220 |
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| Trucks | 22.0% |
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| Average travel time | 69.6 min |
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| Congestion ratio | 13.5% |
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| Drivers’ average age | 50.5 yrs |
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| Drivers’ average income | $78,045 |
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Highways carry about half of all travel in Franklin County, Iowa, 53% of vehicle-miles. The average highway carries 6,220 vehicles per day, 385% more than the average non-highway road in the same area, which carries 1,283 vehicles per day.
That comes from just 15% of the monitored road miles: 48 miles in 38 segments, carrying 313,163 vehicle-miles traveled per day (≈114 million per year).
Higher highway truck share than 81% of counties in Iowa
The concentration of trucks on highways (22.0%) is 37% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.
By truck concentration, highways here outrank 81% of counties in Iowa. By raw truck volume, Franklin carries more highway trucks than 72% of counties in Iowa.

Non-highway Traffic in Franklin County, Iowa
| Traffic | vehicles per day1,283 |
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| Trucks | 8.8% |
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| Average travel time | 34.4 min |
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| Congestion ratio | 6.0% |
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| Drivers’ average age | 52.0 yrs |
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| Drivers’ average income | $63,882 |
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Local roads carry about half of all travel in Franklin County, Iowa, 47% of vehicle-miles. The average non-highway road carries 1,283 vehicles per day.
Spread over 265 miles and 2,393 segments, 85% of the road network, local roads carry a lighter load per mile: 274,782 vehicle-miles traveled per day (≈100 million per year). Trucks make up 8.8% of non-highway traffic, about 1 in 11 vehicles.
Drivers from lower-income areas than 83% of counties in Iowa
Non-highway roads carry a truck concentration that's 60% lower than the highway network.
The non-highway congestion ratio of 6.0% is 46% lower than the state level, suggesting more efficient local mobility than the state average.
Trip origins here have lower average income than 83% of counties in Iowa. Franklin's median driver age is higher than 78% of counties in Iowa.