
Total Traffic Volume & Performance in Franklin County, Illinois
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,546 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 16.2% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 33.3 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. | 10.5% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 49.3 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $59,620 |
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A typical monitored road in Franklin County, Illinois sees 3,546 vehicles per day, while its 234 miles of monitored roads together handle 1,158,256 vehicle-miles traveled per day (≈423 million per year). Freight weighs heavily here: trucks are 16.2% of traffic, against 10.2% across Illinois.
Traffic 58% below the Illinois average
At 3,546 vehicles per day, the average monitored road in Franklin carries 58% less traffic than the state average of 8,480, suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 0.5% of Illinois's statewide total of vehicle-miles. By volume, Franklin's 3,546 vehicles per day outpaces 66% of counties in Illinois.
At 33.3 minutes, the average travel time matches the state level closely. Its average travel time of 33.3 minutes is shorter than 57% of counties in Illinois.
At 49% lower than the state level, the 10.5% 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, Illinois
| Traffic | vehicles per day14,202 |
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| Trucks | 26.4% |
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| Average travel time | 47.7 min |
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| Congestion ratio | 30.5% |
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| Drivers’ average age | 48.6 yrs |
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| Drivers’ average income | $63,157 |
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Highways carry about half of all travel in Franklin County, Illinois, 51% of vehicle-miles. The average highway carries 14,202 vehicles per day, 325% more than the average non-highway road in the same area, which carries 3,344 vehicles per day.
Yet highways are only 16% of the road network, 38 miles in 66 segments, so each mile of them is 3.2 times as busy as the average road mile.
56% of counties in Illinois move less traffic on their highways.
More highway trucks than 93% of counties in Illinois
At 26.4%, highway truck share is 52% higher than the state average. That marks Franklin as a major freight corridor, where highway access is what logistics operators compete on.
78% of counties in Illinois see a lower highway truck share than Franklin's 26.4%. 93% of counties in Illinois see fewer highway trucks per day than Franklin's roughly 3,751.

Non-highway Traffic in Franklin County, Illinois
| Traffic | vehicles per day3,344 |
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| Trucks | 5.9% |
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| Average travel time | 33.0 min |
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| Congestion ratio | 10.1% |
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| Drivers’ average age | 49.5 yrs |
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| Drivers’ average income | $58,687 |
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Local roads carry about half of all travel in Franklin County, Illinois, 49% of vehicle-miles. On the average non-highway road, that comes to 3,344 vehicles per day.
Spread over 196 miles and 3,500 segments, 84% of the road network, local roads carry a lighter load per mile: 572,582 vehicle-miles traveled per day (≈209 million per year). About 1 in 17 vehicles on non-highway roads is a truck (5.9%).
Drivers from lower-income areas than 92% of counties in Illinois
Compared to highways, non-highway routes see 78% fewer trucks by share.
The non-highway congestion ratio of 10.1% is 51% lower than the state level, suggesting more efficient local mobility than the state average.
Franklin's average driver income is lower than 92% of counties in Illinois. The driver population here skews younger than 56% of counties in Illinois.