
Total Traffic Volume & Performance in McLean County, Illinois
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day5,007 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 13.7% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 35.6 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. | 14.1% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 41.4 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $92,710 |
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The average monitored road in McLean County, Illinois carries 5,007 vehicles per day. Across its 982 miles of monitored roads, that adds up to 4,717,961 vehicle-miles traveled per day (≈1.7 billion per year). Trucks are 13.7% of traffic, more than the 10.2% across Illinois.
Busier roads than 81% of counties in Illinois
McLean sees 41% lower average daily traffic volume than the state average (5,007 vehicles per day against 8,480), suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Network-wide, McLean accounts for about 2.0% of Illinois's statewide total of vehicle-miles. McLean carries more traffic than 81% of counties in Illinois.
At 35.6 minutes, the average travel time matches the state level closely. Its average travel time of 35.6 minutes is longer than 79% of counties in Illinois.
At 32% lower than the state level, the 14.1% 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 McLean County, Illinois
| Traffic | vehicles per day11,140 |
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| Trucks | 20.2% |
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| Average travel time | 39.1 min |
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| Congestion ratio | 20.2% |
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| Drivers’ average age | 42.9 yrs |
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| Drivers’ average income | $90,796 |
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Highways carry more than half of all travel in McLean County, Illinois (55% of vehicle-miles). The average highway carries 11,140 vehicles per day, 139% more than the average non-highway road in the same area, which carries 4,656 vehicles per day.
With 24% of the road miles (231 miles in 742 segments), highways punch above their length, carrying 2,599,715 vehicle-miles traveled per day (≈949 million per year).
That is more highway travel volume than 91% of counties in Illinois.
Freight-heavy highways
The concentration of trucks on highways (20.2%) is 17% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.
McLean's highway truck share (20.2%) is lower than 51% of counties in Illinois. McLean's highway truck count is higher than 54% of counties in Illinois, at roughly 2,256 trucks per day.

Non-highway Traffic in McLean County, Illinois
| Traffic | vehicles per day4,656 |
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| Trucks | 5.6% |
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| Average travel time | 35.4 min |
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| Congestion ratio | 13.7% |
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| Drivers’ average age | 40.9 yrs |
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| Drivers’ average income | $93,645 |
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Local roads carry a significant share of travel in McLean County, Illinois: 45% of all vehicle-miles. The average non-highway road carries 4,656 vehicles per day.
Spread over 751 miles and 12,949 segments, 76% of the road network, local roads carry a lighter load per mile: 2,118,246 vehicle-miles traveled per day (≈773 million per year). The truck share on non-highway roads is 5.6%.
Younger drivers than 98% of counties in Illinois
Non-highway roads carry a truck concentration that's 72% lower than the highway network.
At 33% lower than the state level, the non-highway congestion ratio of 13.7% signals easier movement on local roads.
89% of counties in Illinois see lower average driver income among trip origins than McLean. McLean's median driver age is lower than 98% of counties in Illinois.