
Total Traffic Volume & Performance in Logan County, Illinois
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day2,426 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 17.9% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 37.4 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. | 9.5% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 46.6 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $76,546 |
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The average monitored road in Logan County, Illinois carries 2,426 vehicles per day. Across its 376 miles of monitored roads, that adds up to 1,416,640 vehicle-miles traveled per day (≈517 million per year). About 1 in 6 vehicles is a truck, well above the 10.2% across Illinois - a freight-heavy mix.
Longer trips than 90% of counties in Illinois
Logan sees 71% lower average daily traffic volume than the state average (2,426 vehicles per day against 8,480), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Across the whole network, that travel is about 0.6% of Illinois's statewide total. By volume, Logan's 2,426 vehicles per day trails 68% of counties in Illinois.
At 37.4 minutes, the average travel time is 10% higher than the state level. Its average travel time of 37.4 minutes is longer than 90% of counties in Illinois.
At 54% lower than the state level, the 9.5% congestion ratio signals smoother traffic flow - free-flowing roads make scheduled deliveries highly predictable.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Logan County, Illinois
| Traffic | vehicles per day11,066 |
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| Trucks | 22.0% |
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| Average travel time | 60.7 min |
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| Congestion ratio | 20.0% |
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| Drivers’ average age | 45.5 yrs |
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| Drivers’ average income | $84,924 |
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Highways carry most of the traffic in Logan County, Illinois: 71% of all vehicle-miles. The average highway carries 11,066 vehicles per day, 447% more than the average non-highway road in the same area, which carries 2,025 vehicles per day.
Yet highways are only 24% of the road network, 88 miles in 116 segments, so each mile of them is 3.0 times as busy as the average road mile.
75% of counties in Illinois move less traffic on their highways.
Freight-heavy highways
The concentration of trucks on highways (22.0%) is 27% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.
60% of counties in Illinois see a lower highway truck share than Logan's 22.0%. 62% of counties in Illinois see fewer highway trucks per day than Logan's roughly 2,439.

Non-highway Traffic in Logan County, Illinois
| Traffic | vehicles per day2,025 |
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| Trucks | 7.8% |
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| Average travel time | 36.3 min |
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| Congestion ratio | 9.0% |
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| Drivers’ average age | 47.8 yrs |
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| Drivers’ average income | $71,358 |
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Local roads carry a smaller share of travel in Logan County, Illinois, 29% of vehicle-miles; most driving happens on highways. A typical local road sees 2,025 vehicles per day.
Spread over 288 miles and 2,499 segments, 76% of the road network, local roads carry a lighter load per mile: 411,291 vehicle-miles traveled per day (≈150 million per year). The truck share on non-highway roads is 7.8%.
Younger drivers than 85% of counties in Illinois
Compared to highways, non-highway routes see 65% fewer trucks by share.
The non-highway congestion ratio of 9.0% is 56% lower than the state level, suggesting more efficient local mobility than the state average.
Logan's average driver income is higher than 64% of counties in Illinois. The driver population here skews younger than 85% of counties in Illinois.