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Traffic heat map of McLean County, Illinois: 982 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 55 and Veterans Parkway

McLean County, Illinois Traffic Counts

How busy are the roads of McLean County, Illinois? We measure 982 road miles, divided into 13,691 segments, with multi-sourced, cross-verified mobile and sensor data. Its busiest road, I 55, carries 40,072 vehicles a day, 8.0 times the average road. The breakdown below covers volume, trucks, congestion and driver profiles for retailers, logistics planners and engineers.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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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
Trucks

The percentage of the total traffic volume composed of heavy vehicles.

13.7%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

35.6 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

14.1%
Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

41.4 yrs
Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$92,710

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 icon

Highway Traffic in McLean County, Illinois

Trafficvehicles per day11,140
Trucks20.2%
Average travel time39.1 min
Congestion ratio20.2%
Drivers’ average age42.9 yrs
Drivers’ average income$90,796

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 icon

Non-highway Traffic in McLean County, Illinois

Trafficvehicles per day4,656
Trucks5.6%
Average travel time35.4 min
Congestion ratio13.7%
Drivers’ average age40.9 yrs
Drivers’ average income$93,645

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.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
A long morning plateau from 7:00 AM to 12:00 PM and a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 70% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 22% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
Traffic is nearly flat through the year: even August–October, the busiest stretch, runs only +3% versus the annual average.
Lowest month:
January is the quietest month, with volumes -5% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In McLean County, Illinois, the peak hour concentrates about 7% of the day's traffic, and traffic stays steady through the year (+3% in high season).

McLean County vs. Illinois Traffic Comparison

The average daily traffic per road sets McLean County apart: 41% below the Illinois average. Its truck share, by contrast, is 34% above.

MetricMcLean CountyIllinois averageDifference
Traffic5,0078,480-41.0%
Truck % (Total Traffic)13.7%10.2%+34.3%
Truck % (Highway)20.2%17.3%+16.8%
Avg. Travel Time35.6 min34.1 min+4.2%

How McLean County compares

McLean County moves more traffic than any nearby county

Compared with its 4 closest neighbours, McLean County moves 3.0 times the total daily travel and carries 68.3% more traffic on a typical road; it has the busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

McLean County and the 4 nearest county-level areas by centroid distance, with the Illinois average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
McLean County5,00713.7%4,717,96135.6 min14.1%
De Witt County, Illinois2,31612.5%489,12034.2 min7.4%
Woodford County, Illinois2,46613.4%1,362,12129.5 min9.6%
Livingston County, Illinois2,23817.8%1,364,39535.5 min7.8%
Tazewell County, Illinois4,8838.2%3,071,95231.4 min14.2%
Illinois average8,48010.2%N/A34.1 min20.6%

McLean County ranked within Illinois

Average driver age places McLean County #100 of 102 in Illinois - the bottom quarter of the state.

McLean County ranked among 102 county-level areas in Illinois (1 = highest); measures without data in every county rank a smaller field, down to 82.
MeasureMcLean CountyIllinois rank
Traffic volume (AADT)5,007#20 of 102
Highway vehicle-miles per day2,599,715#8 of 82
Truck share on highways20.2%#42 of 82
Highway trucks per day2,256#38 of 82
Average travel time35.6 min#22 of 102
Average driver income$92,710#12 of 102
Average driver age41.4 yrs#100 of 102

McLean County ranks #8 of 82 on highway travel volume but #100 of 102 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in McLean County, Illinois

Traffic concentrates on a few corridors: the three busiest roads average 33,984 vehicles a day, against 5,007 on the average road in McLean County.

I 55 leads with 40,072 vehicles a day, 10,397 of them trucks (25.9%). It also carries the most trucks.

Freight stands out on US 51 and I 55: trucks are 34.0% and 25.9% of the traffic there, against 13.7% county-wide.

US 51 carries longer journeys than most roads here, with a median trip of 66.5 minutes against 35.6 county-wide.

Drivers on Beaufort Street come from neighborhoods with an average household income of $51,041, 45% below the county average of $92,710.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 55Motorway · 40,072vehicles10,397trucks · 25.9%
Road class
Motorway
Congestion ratio
27.6%
Median trip time
54.7 min
Drivers’ median age
43.4 yrs
Drivers’ average income
$87,932

Drivers on I 55 are on long journeys, a median 54.7 minutes against 35.6 county-wide: a through route more than a local street.

2Veterans ParkwayTrunk road · 37,017vehicles1,545trucks · 4.2%
Road class
Trunk road
Congestion ratio
27.4%
Median trip time
33.6 min
Drivers’ median age
43.0 yrs
Drivers’ average income
$89,677

Veterans Parkway is a trunk route for the county, carrying 7.4 times the county average on its busiest stretch; trucks are 4.2% of it, below the county-wide 13.7%.

3I 74Motorway · 24,862vehicles4,631trucks · 18.6%
Road class
Motorway
Congestion ratio
30.7%
Median trip time
52.5 min
Drivers’ median age
44.2 yrs
Drivers’ average income
$93,773

I 74 carries through traffic: the median trip using it lasts 52.5 minutes, against 35.6 for the county.

4Beaufort StreetSecondary road · 21,720vehicles934trucks · 4.3%
Road class
Secondary road
Congestion ratio
34.5%
Median trip time
36.4 min
Drivers’ median age
40.3 yrs
Drivers’ average income
$51,041

Travel on Beaufort Street's busiest stretch runs 35% over free-flow time, against 14% across the county, so expect slower peak hours.

5Main StreetPrimary road · 19,708vehicles817trucks · 4.1%
Road class
Primary road
Congestion ratio
41.1%
Median trip time
38.1 min
Drivers’ median age
42.0 yrs
Drivers’ average income
$58,879

Main Street is one of the more congested roads here: trips take 41% longer than at free-flow speed, against 14% county-wide.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 55Motorway · #1 by traffic40,072vehicles10,397trucks · 25.9%
2I 74Motorway · #3 by traffic24,862vehicles4,631trucks · 18.6%
3US 51Motorway · 10,104vehicles3,439trucks · 34.0%
Road class
Motorway
Congestion ratio
14.3%
Median trip time
66.5 min
Drivers’ median age
47.2 yrs
Drivers’ average income
$88,219

US 51 peaks at 10,104 vehicles a day, 2.0 times the county average; trucks are 34.0% of it, above the county-wide 13.7%.

4I 39Motorway · 18,718vehicles3,420trucks · 18.3%
Road class
Motorway
Congestion ratio
20.1%
Median trip time
51.5 min
Drivers’ median age
42.1 yrs
Drivers’ average income
$90,868

I 39 carries 3.7 times the county average at its busiest, 3,420 of them trucks (18.3%, above the county-wide 13.7%).

5Veterans ParkwayTrunk road · #2 by traffic37,017vehicles1,545trucks · 4.2%
How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

Data Sources & Methodology

The data presented on this page is derived from TrafficZoom's proprietary analytics platform, which aggregates and normalizes information from multiple sources, including:

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases

Public traffic count programs published by the

McLeanDepartment of Transportation

Demographic Baseline for O-D Modeling

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
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Data current as of:
Q3 2026

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Counties near McLean County

The same traffic breakdown for the areas closest to McLean County, Illinois.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.