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Traffic heat map of Grant County, Indiana: 229 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 69 and Baldwin Avenue

Grant County, Indiana Traffic Counts

Its busiest road, I 69, carries 26,157 vehicles a day, 4.0 times the average road. This page breaks down traffic in Grant County, Indiana across 229 miles of monitored roads split into 3,092 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
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 Grant County, Indiana

Traffic

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

vehicles per day6,614
Trucks

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

14.3%
Average travel time

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

36.2 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.

47.6 yrs
Drivers’ average income

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

$66,601

A typical monitored road in Grant County, Indiana sees 6,614 vehicles per day, while its 229 miles of monitored roads together handle 1,311,505 vehicle-miles traveled per day (≈479 million per year). At 14.3%, the truck share runs above the 12.1% across Indiana: about 1 in 7 vehicles.

Busier roads than 92% of counties in Indiana

Grant sees 16% higher average daily traffic volume than the state average (6,614 vehicles per day against 5,704), suggesting more demand on each road - a factor worth weighing in site selection and logistics planning. Across the whole network, that travel is about 0.8% of Indiana's statewide total. Grant carries more traffic than 92% of counties in Indiana.

Journey times run 8% higher than the state level, at 36.2 minutes on average. 81% of counties in Indiana have a shorter average travel time than Grant's 36.2 minutes.

The congestion ratio of 14.1% runs slightly lower than the state level (9% lower).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Grant County, Indiana

Trafficvehicles per day11,839
Trucks25.3%
Average travel time70.0 min
Congestion ratio24.1%
Drivers’ average age44.5 yrs
Drivers’ average income$79,204

A significant share of driving in Grant County, Indiana, 39% of vehicle-miles, happens on highways. The average highway carries 11,839 vehicles per day, 83% more than the average non-highway road in the same area, which carries 6,470 vehicles per day.

With 18% of the road miles (41 miles in 83 segments), highways punch above their length, carrying 510,071 vehicle-miles traveled per day (≈186 million per year).

Higher highway truck share than 74% of counties in Indiana

Highway truck concentration here runs 29% higher than the state average, at 25.3%. Highways here lean toward freight, so highway access is a real asset for logistics operators.

Grant's highway truck share (25.3%) is higher than 74% of counties in Indiana. 63% of counties in Indiana see fewer highway trucks per day than Grant's roughly 2,998.

non-highway traffic icon

Non-highway Traffic in Grant County, Indiana

Trafficvehicles per day6,470
Trucks7.3%
Average travel time35.3 min
Congestion ratio13.9%
Drivers’ average age48.0 yrs
Drivers’ average income$64,748

A little more than half of the driving in Grant County, Indiana happens on local roads: 61% of all vehicle-miles. The average non-highway road carries 6,470 vehicles per day.

Spread over 188 miles and 3,009 segments, 82% of the road network, local roads carry a lighter load per mile: 801,434 vehicle-miles traveled per day (≈293 million per year). Trucks make up 7.3% of non-highway traffic, about 1 in 14 vehicles.

Drivers from lower-income areas than 76% of counties in Indiana

Non-highway roads carry a truck concentration that's 71% lower than the highway network.

Non-highway congestion (13.9%) runs slightly lower than the state level (9% lower).

76% of counties in Indiana see higher average driver income among trip origins than Grant. The driver population here skews younger than 56% of counties in Indiana.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Grant County vs. Indiana Traffic Comparison

The highway truck share sets Grant County apart: 29% above the Indiana average. Its truck share is also 18% above.

MetricGrant CountyIndiana averageDifference
Traffic6,6145,704+16.0%
Truck % (Total Traffic)14.3%12.1%+18.2%
Truck % (Highway)25.3%19.6%+29.3%
Avg. Travel Time36.2 min33.5 min+8.1%

How Grant County compares

Grant County has the busiest roads among its nearby counties

Compared with its 4 closest neighbours, Grant County carries 56.3% more traffic on a typical road; it has the busiest roads of the five.

Grant County and the 4 nearest county-level areas by centroid distance, with the Indiana average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Grant County6,61414.3%1,311,50536.2 min14.1%
Blackford County, Indiana3,2559.6%150,76135.9 min9.0%
Huntington County, Indiana3,28715.6%1,292,32834.8 min9.5%
Madison County, Indiana4,7679.2%2,834,76033.7 min12.9%
Howard County, Indiana5,6208.0%1,337,22634.6 min16.1%
Indiana average5,70412.1%N/A33.5 min15.6%

Grant County ranked within Indiana

Average daily traffic volume places Grant County #8 of 92 in Indiana - the top quarter of the state.

Grant County ranked among 92 county-level areas in Indiana (1 = highest); measures without data in every county rank a smaller field, down to 79.
MeasureGrant CountyIndiana rank
Traffic volume (AADT)6,614#8 of 92
Highway vehicle-miles per day510,071#41 of 79
Truck share on highways25.3%#21 of 79
Highway trucks per day2,998#30 of 79
Average travel time36.2 min#18 of 92
Average driver income$66,601#70 of 92
Average driver age47.6 yrs#52 of 92

Grant County ranks #8 of 92 on average daily traffic volume but #70 of 92 on average driver income - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Grant County, Indiana

On their busiest stretches, the three busiest roads in Grant County carry 21,590 vehicles a day on average, 3.3 times the typical road in the county (6,614).

I 69 is the busiest road, at 26,157 vehicles a day, 6,612 of them trucks (25.3%). It also carries the most trucks.

I 69 carries longer journeys than most roads here, with a median trip of 71.0 minutes against 36.2 county-wide.

Trucks make up 25.3% of traffic on I 69, against 14.3% across all roads in the county.

Few trucks use Western Avenue: 4.1% of its traffic, under half the county's 14.3%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 69Motorway · 26,157vehicles6,612trucks · 25.3%
Road class
Motorway
Congestion ratio
25.1%
Median trip time
71.0 min
Drivers’ median age
45.3 yrs
Drivers’ average income
$80,413

I 69 peaks at 26,157 vehicles a day, 4.0 times the county average; trucks are 25.3% of it, above the county-wide 14.3%.

2Baldwin AvenuePrimary road · 23,548vehicles1,028trucks · 4.4%
Road class
Primary road
Congestion ratio
28.6%
Median trip time
33.1 min
Drivers’ median age
48.7 yrs
Drivers’ average income
$59,107

Baldwin Avenue carries 3.6 times the county average at its busiest, 1,028 of them trucks (4.4%, below the county-wide 14.3%).

3Western AvenuePrimary road · 15,066vehicles618trucks · 4.1%
Road class
Primary road
Congestion ratio
25.0%
Median trip time
33.4 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$60,798

Western Avenue carries 2.3 times the county average on its busiest stretch, where the median trip lasts 33.4 minutes.

4Wabash AvenueTertiary road · 14,425vehicles625trucks · 4.3%
Road class
Tertiary road
Congestion ratio
34.3%
Median trip time
52.7 min
Drivers’ median age
46.5 yrs
Drivers’ average income
$60,548

Travel on Wabash Avenue's busiest stretch runs 34% over free-flow time, against 14% across the county, so expect slower peak hours.

538th StreetSecondary road · 13,357vehicles577trucks · 4.3%
Road class
Secondary road
Congestion ratio
31.7%
Median trip time
33.1 min
Drivers’ median age
47.0 yrs
Drivers’ average income
$58,683

38th Street is one of the more congested roads here: trips take 32% longer than at free-flow speed, against 14% county-wide.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 69Motorway · #1 by traffic26,157vehicles6,612trucks · 25.3%
2Baldwin AvenuePrimary road · #2 by traffic23,548vehicles1,028trucks · 4.4%
3State Road 18Primary road · 9,496vehicles963trucks · 10.1%
Road class
Primary road
Congestion ratio
12.1%
Median trip time
46.9 min
Drivers’ median age
46.4 yrs
Drivers’ average income
$63,183

State Road 18 peaks at 9,496 vehicles a day, 44% more than the county average; trucks are 10.1% of it, below the county-wide 14.3%.

4East 500 SouthPrimary road · 10,004vehicles660trucks · 6.6%
Road class
Primary road
Congestion ratio
24.7%
Median trip time
44.7 min
Drivers’ median age
47.1 yrs
Drivers’ average income
$67,048

East 500 South carries 51% more than the county average at its busiest, 660 of them trucks (6.6%, below the county-wide 14.3%).

5Wabash AvenueTertiary road · #4 by traffic14,425vehicles625trucks · 4.3%
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

GrantDepartment 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 Grant County

The same traffic breakdown for the areas closest to Grant County, Indiana.

Need segment-level traffic data?

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