Need segment-level traffic data?

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

Get insights →
Traffic heat map of Shiawassee County, Michigan: 415 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 69 and Main Street

Shiawassee County, Michigan Traffic Counts

How busy are the roads of Shiawassee County, Michigan? We measure 415 road miles, divided into 8,286 segments, with multi-sourced, cross-verified mobile and sensor data. Its busiest road, I 69, carries 22,302 vehicles a day, 5.7 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
Find my place
total traffic icon

Total Traffic Volume & Performance in Shiawassee County, Michigan

Traffic

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

vehicles per day3,893
Trucks

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

8.8%
Average travel time

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

34.1 min
Congestion ratio

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

13.0%
Drivers’ average age

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

49.9 yrs
Drivers’ average income

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

$70,902

A typical monitored road in Shiawassee County, Michigan sees 3,893 vehicles per day, while its 415 miles of monitored roads together handle 1,681,565 vehicle-miles traveled per day (≈614 million per year). About 1 in 11 vehicles is a truck, in line with Michigan (7.7%).

Traffic 49% below the Michigan average

Shiawassee's average daily traffic volume is 49% lower than the state average - 3,893 vehicles per day against 7,697 - suggesting less traffic load per road - lighter roads for freight, but less passing trade for roadside retail. Network-wide, Shiawassee accounts for about 0.8% of Michigan's statewide total of vehicle-miles. 55% of counties in Michigan see less traffic than Shiawassee's 3,893 vehicles per day.

Journey times here (34.1 minutes on average) closely track the state level. On travel time, Shiawassee runs longer than 60% of counties in Michigan.

The congestion ratio of 13.0% is 29% lower, pointing to smoother traffic flow than the state level - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Shiawassee County, Michigan

Trafficvehicles per day12,052
Trucks14.0%
Average travel time57.2 min
Congestion ratio27.1%
Drivers’ average age47.7 yrs
Drivers’ average income$78,661

A significant share of driving in Shiawassee County, Michigan, 40% of vehicle-miles, happens on highways. The average highway carries 12,052 vehicles per day, 217% more than the average non-highway road in the same area, which carries 3,805 vehicles per day.

Highways make up 14% of the monitored road miles (56 miles, 88 segments), so they carry more than their share: 676,259 vehicle-miles traveled per day (≈247 million per year).

62% of counties in Michigan move less traffic on their highways.

Higher highway truck share than 82% of counties in Michigan

The concentration of trucks on highways (14.0%) 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.

Shiawassee's highway truck share (14.0%) is higher than 82% of counties in Michigan. Shiawassee's highway truck count is higher than 71% of counties in Michigan, at roughly 1,690 trucks per day.

non-highway traffic icon

Non-highway Traffic in Shiawassee County, Michigan

Trafficvehicles per day3,805
Trucks5.2%
Average travel time33.9 min
Congestion ratio12.9%
Drivers’ average age50.2 yrs
Drivers’ average income$69,140

Local roads carry more than half of all travel in Shiawassee County, Michigan (60% of vehicle-miles). A typical local road sees 3,805 vehicles per day.

Local roads make up 86% of the monitored road miles (358 miles in 8,198 segments) but carry less than their share of travel: 1,005,306 vehicle-miles traveled per day (≈367 million per year). The truck share on non-highway roads is 5.2%.

Local roads carry 63% fewer trucks by share than highways

Compared to highways, non-highway routes see 63% fewer trucks by share.

The non-highway congestion ratio of 12.9% is 29% lower than the state level, suggesting more efficient local mobility than the state average.

Trip origins here have higher average income than 65% of counties in Michigan. The driver population here skews younger than 56% of counties in Michigan.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and PM peak 4:00 PM–6:00 PM, with volumes reaching approximately 82% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 9% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
April–June is the high season, with volumes +10% versus the annual average.
Lowest month:
January is the quietest month, with volumes -17% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Shiawassee County, Michigan, the peak hour concentrates about 8% of the day's traffic, and there is a noticeable seasonal swing of +10% in high season.

Shiawassee County vs. Michigan Traffic Comparison

Of the four measures, average daily traffic per road differs most: Shiawassee County runs 49% below the Michigan average. Its highway truck share, by contrast, is 17% above.

MetricShiawassee CountyMichigan averageDifference
Traffic3,8937,697-49.4%
Truck % (Total Traffic)8.8%7.7%+13.8%
Truck % (Highway)14.0%12.0%+17.2%
Avg. Travel Time34.1 min33.6 min+1.6%

How Shiawassee County compares

Shiawassee County moves the least traffic of its nearby counties

Compared with its 4 closest neighbours, Shiawassee County moves 31.8% of the total daily travel and carries 33.9% less traffic on a typical road; it has the fourth busiest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Shiawassee County and the 4 nearest county-level areas by centroid distance, with the Michigan average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Shiawassee County3,8938.8%1,681,56534.1 min13.0%
Clinton County, Michigan3,32010.9%2,641,85732.1 min9.3%
Genesee County, Michigan7,3945.9%8,901,98132.4 min16.9%
Saginaw County, Michigan5,6876.9%4,506,01635.3 min16.5%
Ingham County, Michigan7,1387.1%5,103,79036.2 min21.5%
Michigan average7,6977.7%N/A33.6 min18.5%

Shiawassee County ranked within Michigan

Shiawassee County sits in the top quarter of the Michigan field on truck share on highways, at #14 of 74.

Shiawassee County ranked among 83 county-level areas in Michigan (1 = highest); measures without data in every county rank a smaller field, down to 74.
MeasureShiawassee CountyMichigan rank
Traffic volume (AADT)3,893#38 of 83
Highway vehicle-miles per day676,259#29 of 74
Truck share on highways14.0%#14 of 74
Highway trucks per day1,690#22 of 74
Average travel time34.1 min#33 of 83
Average driver income$70,902#30 of 83
Average driver age49.9 yrs#47 of 83

Busiest roads in Shiawassee County, Michigan

The three busiest roads in Shiawassee County average 17,647 vehicles a day, 4.5 times the county average of 3,893 across all its monitored roads.

I 69 leads with 22,302 vehicles a day, 3,127 of them trucks (14.0%). It also carries the most trucks.

Trips using I 69 are long: a median of 57.2 minutes against 34.1 county-wide, the mark of a through route.

Trucks make up 14.0% of traffic on I 69, against 8.8% across all roads in the county.

Few trucks use Shiawassee Street: 4.3% of its traffic, under half the county's 8.8%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 69Motorway · 22,302vehicles3,127trucks · 14.0%
Road class
Motorway
Congestion ratio
27.1%
Median trip time
57.2 min
Drivers’ median age
47.7 yrs
Drivers’ average income
$78,661

I 69 carries 5.7 times the county average on its busiest stretch, where the median trip lasts 57.2 minutes.

2Main StreetPrimary road · 19,139vehicles900trucks · 4.7%
Road class
Primary road
Congestion ratio
51.0%
Median trip time
34.0 min
Drivers’ median age
50.1 yrs
Drivers’ average income
$63,598

Main Street is one of the more congested roads here: trips take 51% longer than at free-flow speed, against 13% county-wide.

3Shiawassee StreetTertiary road · 11,500vehicles496trucks · 4.3%
Road class
Tertiary road
Congestion ratio
27.1%
Median trip time
32.0 min
Drivers’ median age
50.4 yrs
Drivers’ average income
$65,350

Delays build on Shiawassee Street: its congestion ratio of 27% over free-flow time is well above the county's 13%.

4Gould StreetTertiary road · 9,864vehicles356trucks · 3.6%
Road class
Tertiary road
Congestion ratio
24.0%
Median trip time
36.4 min
Drivers’ median age
49.7 yrs
Drivers’ average income
$59,607

Gould Street peaks at 9,864 vehicles a day, 2.5 times the county average; trucks are 3.6% of it, below the county-wide 8.8%.

5M 52Secondary road · 9,376vehicles463trucks · 4.9%
Road class
Secondary road
Congestion ratio
21.8%
Median trip time
35.4 min
Drivers’ median age
49.4 yrs
Drivers’ average income
$74,459

M 52 carries 2.4 times the county average at its busiest, 463 of them trucks (4.9%, below the county-wide 8.8%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 69Motorway · #1 by traffic22,302vehicles3,127trucks · 14.0%
2Main StreetPrimary road · #2 by traffic19,139vehicles900trucks · 4.7%
3Sheridan RoadPrimary road · 8,427vehicles564trucks · 6.7%
Road class
Primary road
Congestion ratio
20.1%
Median trip time
38.0 min
Drivers’ median age
52.3 yrs
Drivers’ average income
$67,287

Sheridan Road carries 2.2 times the county average on its busiest stretch, where the median trip lasts 38.0 minutes.

4M 21Primary road · 8,096vehicles541trucks · 6.7%
Road class
Primary road
Congestion ratio
20.0%
Median trip time
37.1 min
Drivers’ median age
50.2 yrs
Drivers’ average income
$62,444

At 2.1 times the county average, M 21 draws drivers from neighborhoods averaging $62,444 in household income.

5Shiawassee StreetTertiary road · #3 by traffic11,500vehicles496trucks · 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

ShiawasseeDepartment 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.
link arrow icon
Data current as of:
Q3 2026

Explore further

TrafficZoom platform

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

Counties near Shiawassee County

The same traffic breakdown for the areas closest to Shiawassee County, Michigan.

Need segment-level traffic data?

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