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Traffic heat map of Saginaw County, Michigan: 796 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 75 and Zilwaukee Bridge

Saginaw County, Michigan Traffic Counts

Traffic analytics for Saginaw County, Michigan, calculated from real-world mobile and sensor networks on 15,971 road segments (796 road miles, about 263 ft each). Its busiest road, I 75, carries 54,337 vehicles a day, 9.6 times the average road. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
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 Saginaw County, Michigan

Traffic

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

vehicles per day5,687
Trucks

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

6.9%
Average travel time

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

35.3 min
Congestion ratio

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

16.5%
Drivers’ average age

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

48.3 yrs
Drivers’ average income

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

$69,959

A typical monitored road in Saginaw County, Michigan sees 5,687 vehicles per day, while its 796 miles of monitored roads together handle 4,506,016 vehicle-miles traveled per day (≈1.6 billion per year). About 1 in 14 vehicles is a truck, in line with Michigan (7.7%).

Busier roads than 80% of counties in Michigan

Saginaw sees 26% lower average daily traffic volume than the state average (5,687 vehicles per day against 7,697), suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Across the whole network, that travel is about 2.1% of Michigan's statewide total. Saginaw carries more traffic than 80% of counties in Michigan.

At 35.3 minutes, the average travel time is 5% higher than the state level. 74% of counties in Michigan have a shorter average travel time than Saginaw's 35.3 minutes.

The congestion ratio of 16.5% runs slightly lower than the state level (10% lower) - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Saginaw County, Michigan

Trafficvehicles per day11,489
Trucks10.3%
Average travel time44.1 min
Congestion ratio21.1%
Drivers’ average age48.8 yrs
Drivers’ average income$70,565

A significant share of driving in Saginaw County, Michigan, 41% of vehicle-miles, happens on highways. The average highway carries 11,489 vehicles per day, 116% more than the average non-highway road in the same area, which carries 5,319 vehicles per day.

That comes from just 13% of the monitored road miles: 104 miles in 953 segments, carrying 1,832,556 vehicle-miles traveled per day (≈669 million per year).

By highway travel volume, Saginaw outranks 81% of counties in Michigan.

More highway trucks than 73% of counties in Michigan

The concentration of trucks on highways (10.3%) is 14% lower than the state average for similar road classifications. The highway traffic mix is typical for Michigan: neither freight- nor commuter-dominated.

By truck concentration, highways here trail 62% of counties in Michigan. Saginaw's highway truck count is higher than 73% of counties in Michigan, at roughly 1,187 trucks per day.

non-highway traffic icon

Non-highway Traffic in Saginaw County, Michigan

Trafficvehicles per day5,319
Trucks4.6%
Average travel time34.8 min
Congestion ratio16.3%
Drivers’ average age48.2 yrs
Drivers’ average income$69,714

A little more than half of the driving in Saginaw County, Michigan happens on local roads: 59% of all vehicle-miles. On the average non-highway road, that comes to 5,319 vehicles per day.

Spread over 692 miles and 15,018 segments, 87% of the road network, local roads carry a lighter load per mile: 2,673,460 vehicle-miles traveled per day (≈976 million per year). The truck share on non-highway roads is 4.6%.

Younger drivers than 68% of counties in Michigan

The concentration of trucks on non-highway roads is 55% lower than on highways.

Non-highway congestion (16.3%) runs slightly lower than the state level (11% lower).

Saginaw's average driver income is higher than 61% of counties in Michigan. Saginaw's median driver age is lower than 68% of counties in Michigan.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and PM peak 3:00 PM–6:00 PM, with volumes reaching approximately 79% higher than the daily average.
Weekend traffic:
Weekend traffic is about as busy as on weekdays (-3%): leisure and through trips largely replace the commute.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +24% versus the annual average.
Lowest month:
January is the quietest month, with volumes -21% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Saginaw County, Michigan, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +24% in high season.

Saginaw County vs. Michigan Traffic Comparison

Of the four measures, average daily traffic per road differs most: Saginaw County runs 26% below the Michigan average.

MetricSaginaw CountyMichigan averageDifference
Traffic5,6877,697-26.1%
Truck % (Total Traffic)6.9%7.7%-9.9%
Truck % (Highway)10.3%12.0%-13.6%
Avg. Travel Time35.3 min33.6 min+5.2%

How Saginaw County compares

Saginaw County against nearby counties

Nothing in this table sets Saginaw County sharply apart from the 4 areas nearest to it, though it has the third busiest roads of the five.

Saginaw 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
Saginaw County5,6876.9%4,506,01635.3 min16.5%
Shiawassee County, Michigan3,8938.8%1,681,56534.1 min13.0%
Genesee County, Michigan7,3945.9%8,901,98132.4 min16.9%
Gratiot County, Michigan4,21010.2%1,158,10136.5 min11.2%
Bay County, Michigan5,8177.6%2,869,83932.8 min15.0%
Michigan average7,6977.7%N/A33.6 min18.5%

Saginaw County ranked within Michigan

Saginaw County sits in the top quarter of the Michigan field on highway travel volume, at #15 of 74.

Saginaw County ranked among 83 county-level areas in Michigan (1 = highest); measures without data in every county rank a smaller field, down to 74.
MeasureSaginaw CountyMichigan rank
Traffic volume (AADT)5,687#17 of 83
Highway vehicle-miles per day1,832,556#15 of 74
Truck share on highways10.3%#46 of 74
Highway trucks per day1,187#21 of 74
Average travel time35.3 min#22 of 83
Average driver income$69,959#33 of 83
Average driver age48.3 yrs#57 of 83

Busiest roads in Saginaw County, Michigan

The three busiest roads in Saginaw County average 37,696 vehicles a day, 6.6 times the county average of 5,687 across all its monitored roads.

I 75 leads with 54,337 vehicles a day, 6,036 of them trucks (11.1%). No other road comes close: Zilwaukee Bridge, in second place, carries 35,836. It also carries the most trucks.

Trucks make up 14.2% of traffic on Zilwaukee Bridge, against 6.9% across all roads in the county.

I 75 carries longer journeys than most roads here, with a median trip of 57.3 minutes against 35.3 county-wide.

Drivers on Rust Avenue come from neighborhoods with an average household income of $40,415, 42% below the county average of $69,959.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 75Motorway · 54,337vehicles6,036trucks · 11.1%
Road class
Motorway
Congestion ratio
35.0%
Median trip time
57.3 min
Drivers’ median age
49.8 yrs
Drivers’ average income
$72,788

I 75 carries 9.6 times the county average on its busiest stretch, where the median trip lasts 57.3 minutes.

2Zilwaukee BridgeMotorway · 35,836vehicles5,075trucks · 14.2%
Road class
Motorway
Median trip time
55.8 min
Drivers’ median age
50.4 yrs
Drivers’ average income
$73,449

Zilwaukee Bridge carries through traffic: the median trip using it lasts 55.8 minutes, against 35.3 for the county.

3Bay StreetSecondary road · 22,913vehicles738trucks · 3.2%
Road class
Secondary road
Congestion ratio
61.1%
Median trip time
50.1 min
Drivers’ median age
45.9 yrs
Drivers’ average income
$49,169

Travel on Bay Street's busiest stretch runs 61% over free-flow time, against 17% across the county, so expect slower peak hours.

4Court StreetSecondary road · 18,418vehicles549trucks · 3.0%
Road class
Secondary road
Congestion ratio
46.2%
Median trip time
40.7 min
Drivers’ median age
46.5 yrs
Drivers’ average income
$53,215

Court Street is one of the more congested roads here: trips take 46% longer than at free-flow speed, against 17% county-wide.

5I 675Motorway · 18,273vehicles1,630trucks · 8.9%
Road class
Motorway
Congestion ratio
23.5%
Median trip time
35.3 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$65,954

I 675 carries 3.2 times the county average on its busiest stretch, where the median trip lasts 35.3 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 75Motorway · #1 by traffic54,337vehicles6,036trucks · 11.1%
2Zilwaukee BridgeMotorway · #2 by traffic35,836vehicles5,075trucks · 14.2%
3I 675Motorway · #5 by traffic18,273vehicles1,630trucks · 8.9%
4M 47Motorway · 14,534vehicles1,314trucks · 9.0%
Road class
Motorway
Congestion ratio
14.0%
Median trip time
33.2 min
Drivers’ median age
47.1 yrs
Drivers’ average income
$86,241

At 2.6 times the county average, M 47 draws drivers from neighborhoods averaging $86,241 in household income.

5Rust AvenueTrunk road · 14,064vehicles1,057trucks · 7.5%
Road class
Trunk road
Congestion ratio
15.8%
Median trip time
44.4 min
Drivers’ median age
47.9 yrs
Drivers’ average income
$40,415

The busiest stretch of Rust Avenue carries 2.5 times the county average; trucks are 7.5% of it, above the county-wide 6.9%.

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

SaginawDepartment 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 Saginaw County

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

Need segment-level traffic data?

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