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Traffic heat map of Piatt County, Illinois: 200 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 74 and I 72

Piatt County, Illinois Traffic Counts

How busy are the roads of Piatt County, Illinois? We measure 200 road miles, divided into 1,527 segments, with multi-sourced, cross-verified mobile and sensor data. Its busiest road, I 74, carries 20,368 vehicles a day, 7.7 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 Piatt County, Illinois

Traffic

The average number of vehicles that travel each day over any road in the road network.

vehicles per day2,653
Trucks

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

14.8%
Average travel time

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

30.7 min
Congestion ratio

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

7.7%
Drivers’ average age

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

45.0 yrs
Drivers’ average income

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

$90,912

Our data shows 2,653 vehicles per day on the average road in Piatt County, Illinois, and 702,834 vehicle-miles traveled per day (≈257 million per year) across its 200 miles of monitored roads. Trucks are 14.8% of traffic, more than the 10.2% across Illinois.

Shorter trips than 92% of counties in Illinois

Piatt's average daily traffic volume is 69% lower than the state average - 2,653 vehicles per day against 8,480 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. Network-wide, Piatt accounts for about 0.3% of Illinois's statewide total of vehicle-miles. By volume, Piatt's 2,653 vehicles per day trails 59% of counties in Illinois.

The average trip takes 30.7 minutes, 10% lower than the state level. Its average travel time of 30.7 minutes is shorter than 92% of counties in Illinois.

Congestion runs 63% lower than the state level, at a ratio of 7.7%, which means smoother traffic flow - delays are rare enough to plan travel times almost to the minute.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Piatt County, Illinois

Trafficvehicles per day7,831
Trucks19.0%
Average travel time52.8 min
Congestion ratio17.7%
Drivers’ average age43.3 yrs
Drivers’ average income$93,137

Highways carry more than half of all travel in Piatt County, Illinois (64% of vehicle-miles). The average highway carries 7,831 vehicles per day, 230% more than the average non-highway road in the same area, which carries 2,371 vehicles per day.

Highways make up 29% of the monitored road miles (59 miles, 79 segments), so they carry more than their share: 453,100 vehicle-miles traveled per day (≈165 million per year).

A typical mix of freight and passenger traffic

The concentration of trucks on highways (19.0%) is 10% higher than the state average for similar road classifications. The highway traffic mix is typical for Illinois: neither freight- nor commuter-dominated.

56% of counties in Illinois see a higher highway truck share than Piatt's 19.0%. Piatt's highway truck count is lower than 60% of counties in Illinois, at roughly 1,489 trucks per day.

non-highway traffic icon

Non-highway Traffic in Piatt County, Illinois

Trafficvehicles per day2,371
Trucks7.3%
Average travel time29.5 min
Congestion ratio7.1%
Drivers’ average age47.0 yrs
Drivers’ average income$89,215

A significant share of driving in Piatt County, Illinois, 36% of vehicle-miles, happens on local roads. A typical local road sees 2,371 vehicles per day.

Spread over 141 miles and 1,448 segments, 71% of the road network, local roads carry a lighter load per mile: 249,734 vehicle-miles traveled per day (≈91.2 million per year). About 1 in 14 vehicles on non-highway roads is a truck (7.3%).

Younger drivers than 95% of counties in Illinois

The concentration of trucks on non-highway roads is 62% lower than on highways.

At 65% lower than the state level, the non-highway congestion ratio of 7.1% signals easier movement on local roads.

Piatt's average driver income is higher than 87% of counties in Illinois. Piatt's median driver age is lower than 95% of counties in Illinois.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Piatt County, Illinois, the peak hour concentrates about 7% of the day's traffic.

Piatt County vs. Illinois Traffic Comparison

The average daily traffic per road sets Piatt County apart: 69% below the Illinois average. Its truck share, by contrast, is 46% above.

MetricPiatt CountyIllinois averageDifference
Traffic2,6538,480-68.7%
Truck % (Total Traffic)14.8%10.2%+45.9%
Truck % (Highway)19.0%17.3%+9.8%
Avg. Travel Time30.7 min34.1 min-10.0%

How Piatt County compares

Piatt County against nearby counties

Compared with its 4 closest neighbours, Piatt County is 38.3% less congested and carries 40.5% less traffic on a typical road; it has the fourth busiest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.

Piatt 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
Piatt County2,65314.8%702,83430.7 min7.7%
Macon County, Illinois5,3528.0%2,119,63135.2 min15.9%
Champaign County, Illinois6,78414.0%4,505,85032.8 min17.7%
De Witt County, Illinois2,31612.5%489,12034.2 min7.4%
Moultrie County, Illinois3,3897.9%310,92836.4 min8.9%
Illinois average8,48010.2%N/A34.1 min20.6%

Piatt County ranked within Illinois

Piatt County sits in the bottom quarter of the Illinois field on average driver age, at #97 of 102.

Piatt County ranked among 102 county-level areas in Illinois (1 = highest); measures without data in every county rank a smaller field, down to 82.
MeasurePiatt CountyIllinois rank
Traffic volume (AADT)2,653#61 of 102
Highway vehicle-miles per day453,100#46 of 82
Truck share on highways19.0%#46 of 82
Highway trucks per day1,489#50 of 82
Average travel time30.7 min#94 of 102
Average driver income$90,912#14 of 102
Average driver age45.0 yrs#97 of 102

The two ends of this table sit far apart: #14 of 102 on average driver income, against #97 of 102 on average driver age.

Busiest roads in Piatt County, Illinois

On their busiest stretches, the three busiest roads in Piatt County carry 13,513 vehicles a day on average, 5.1 times the typical road in the county (2,653).

I 74 leads with 20,368 vehicles a day, 5,180 of them trucks (25.4%). No other road comes close: I 72, in second place, carries 13,221. It also carries the most trucks.

Trips using I 74 are long: a median of 53.9 minutes against 30.7 county-wide, the mark of a through route.

Trucks make up 25.4% of traffic on I 74, against 14.8% across all roads in the county.

Market Street is busy with cars rather than freight: only 4.8% of its traffic is trucks, against 14.8% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 74Motorway · 20,368vehicles5,180trucks · 25.4%
Road class
Motorway
Congestion ratio
22.3%
Median trip time
53.9 min
Drivers’ median age
41.6 yrs
Drivers’ average income
$92,738

Travel on I 74's busiest stretch runs 22% over free-flow time, against 8% across the county, so expect slower peak hours.

2I 72Motorway · 13,221vehicles1,940trucks · 14.7%
Road class
Motorway
Congestion ratio
15.3%
Median trip time
50.9 min
Drivers’ median age
46.2 yrs
Drivers’ average income
$93,281

Drivers on I 72 are on long journeys, a median 50.9 minutes against 30.7 county-wide: a through route more than a local street.

3Market StreetSecondary road · 6,950vehicles330trucks · 4.8%
Road class
Secondary road
Congestion ratio
19.9%
Median trip time
27.4 min
Drivers’ median age
44.7 yrs
Drivers’ average income
$93,596

Market Street is one of the more congested roads here: trips take 20% longer than at free-flow speed, against 8% county-wide.

4Bridge StreetSecondary road · 6,667vehicles340trucks · 5.1%
Road class
Secondary road
Congestion ratio
16.0%
Median trip time
26.2 min
Drivers’ median age
45.8 yrs
Drivers’ average income
$93,689

On its busiest stretch, Bridge Street carries 2.5 times the county average; trucks are 5.1% of it, below the county-wide 14.8%.

5Center StreetSecondary road · 6,575vehicles312trucks · 4.7%
Road class
Secondary road
Congestion ratio
15.1%
Median trip time
26.2 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$92,941

Center Street peaks at 6,575 vehicles a day, 2.5 times the county average; trucks are 4.7% of it, below the county-wide 14.8%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 74Motorway · #1 by traffic20,368vehicles5,180trucks · 25.4%
2I 72Motorway · #2 by traffic13,221vehicles1,940trucks · 14.7%
3Bridge StreetSecondary road · #4 by traffic6,667vehicles340trucks · 5.1%
4Market StreetSecondary road · #3 by traffic6,950vehicles330trucks · 4.8%
5Center StreetSecondary road · #5 by traffic6,575vehicles312trucks · 4.7%
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

PiattDepartment 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 Piatt County

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

Need segment-level traffic data?

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