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Traffic heat map of Marathon County, Wisconsin: 1,115 miles of roads shaded from blue (light) to red (heavy traffic), busiest on US 51 and I 39

Marathon County, Wisconsin Traffic Counts

Its busiest road, US 51, carries 50,457 vehicles a day, 12.6 times the average road. This page breaks down traffic in Marathon County, Wisconsin across 1,115 miles of monitored roads split into 10,414 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 Marathon County, Wisconsin

Traffic

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

vehicles per day4,008
Trucks

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

10.1%
Average travel time

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

30.8 min
Congestion ratio

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

11.6%
Drivers’ average age

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

48.7 yrs
Drivers’ average income

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

$79,648

The average monitored road in Marathon County, Wisconsin carries 4,008 vehicles per day. Across its 1,115 miles of monitored roads, that adds up to 3,605,930 vehicle-miles traveled per day (≈1.3 billion per year). About 1 in 10 vehicles is a truck, in line with Wisconsin (10.2%).

Busier roads than 82% of counties in Wisconsin

At 4,008 vehicles per day, the average road in Marathon carries somewhat more traffic than the state average of 3,802 (5% more). Network-wide, Marathon accounts for about 2.7% of Wisconsin's statewide total of vehicle-miles. 82% of counties in Wisconsin see less traffic than Marathon's 4,008 vehicles per day.

At 30.8 minutes, the average travel time matches the state level closely. Its average travel time of 30.8 minutes is shorter than 73% of counties in Wisconsin.

The congestion ratio of 11.6% runs slightly lower than the state level (7% lower).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Marathon County, Wisconsin

Trafficvehicles per day9,792
Trucks13.6%
Average travel time36.5 min
Congestion ratio20.2%
Drivers’ average age49.4 yrs
Drivers’ average income$80,247

Travel in Marathon County, Wisconsin splits roughly evenly, with about half of it (54% of vehicle-miles) on highways. The average highway carries 9,792 vehicles per day, 167% more than the average non-highway road in the same area, which carries 3,666 vehicles per day.

Yet highways are only 18% of the road network, 197 miles in 583 segments, so each mile of them is 3.0 times as busy as the average road mile.

That is more highway travel volume than 89% of counties in Wisconsin.

A typical mix of freight and passenger traffic

At 13.6%, highway truck share is 8% lower than the state average. The highway traffic mix is typical for Wisconsin: neither freight- nor commuter-dominated.

Marathon's highway truck share (13.6%) is lower than 56% of counties in Wisconsin. 58% of counties in Wisconsin see fewer highway trucks per day than Marathon's roughly 1,327.

non-highway traffic icon

Non-highway Traffic in Marathon County, Wisconsin

Trafficvehicles per day3,666
Trucks6.0%
Average travel time30.4 min
Congestion ratio11.1%
Drivers’ average age48.5 yrs
Drivers’ average income$79,277

Travel in Marathon County, Wisconsin splits roughly evenly, with about half of it (46% of vehicle-miles) on local roads. The average non-highway road carries 3,666 vehicles per day.

Spread over 917 miles and 9,831 segments, 82% of the road network, local roads carry a lighter load per mile: 1,661,076 vehicle-miles traveled per day (≈606 million per year). Trucks make up 6.0% of non-highway traffic, about 1 in 17 vehicles.

Drivers from higher-income areas than 69% of counties in Wisconsin

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

Non-highway congestion (11.1%) runs slightly lower than the state level (9% lower).

69% of counties in Wisconsin see lower average driver income among trip origins than Marathon. Marathon's median driver age is lower than 69% of counties in Wisconsin.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 78% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 18% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +13% versus the annual average.
Lowest month:
February is the quietest month, with volumes -14% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Marathon County, Wisconsin, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +13% in high season.

Marathon County vs. Wisconsin Traffic Comparison

Marathon County stays close to the Wisconsin average; the largest gap is its highway truck share, 8% below.

MetricMarathon CountyWisconsin averageDifference
Traffic4,0083,802+5.4%
Truck % (Total Traffic)10.1%10.2%-0.8%
Truck % (Highway)13.6%14.7%-7.8%
Avg. Travel Time30.8 min32.2 min-4.3%

How Marathon County compares

Marathon County moves more traffic than any nearby county

Against the 4 nearest areas, Marathon County moves 2.9 times the total daily travel and carries 59.2% more traffic on a typical road; it has the busiest roads of the five. Bigger and busier at once: more road than the areas around it and heavier traffic on it, which makes it the centre of gravity for travel in this part of the map.

Marathon County and the 4 nearest county-level areas by centroid distance, with the Wisconsin average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Marathon County4,00810.1%3,605,93030.8 min11.6%
Lincoln County, Wisconsin2,3869.8%856,01629.7 min8.0%
Wood County, Wisconsin3,1457.9%1,233,75731.6 min11.5%
Portage County, Wisconsin2,60710.3%1,958,28833.9 min10.8%
Clark County, Wisconsin1,93512.3%991,93037.3 min6.0%
Wisconsin average3,80210.2%N/A32.2 min12.6%

Marathon County ranked within Wisconsin

Marathon County sits in the top quarter of the Wisconsin field on highway travel volume, at #7 of 58.

Marathon County ranked among 72 county-level areas in Wisconsin (1 = highest); measures without data in every county rank a smaller field, down to 58.
MeasureMarathon CountyWisconsin rank
Traffic volume (AADT)4,008#14 of 72
Highway vehicle-miles per day1,944,854#7 of 58
Truck share on highways13.6%#33 of 58
Highway trucks per day1,327#25 of 58
Average travel time30.8 min#53 of 72
Average driver income$79,648#23 of 72
Average driver age48.7 yrs#50 of 72

Busiest roads in Marathon County, Wisconsin

Traffic concentrates on a few corridors: the three busiest roads average 33,847 vehicles a day, against 4,008 on the average road in Marathon County.

US 51 is the busiest road, at 50,457 vehicles a day, 5,074 of them trucks (10.1%). No other road comes close: I 39, in second place, carries 29,783. It also carries the most trucks.

Trips using Ringle Avenue are long: a median of 44.8 minutes against 30.8 county-wide, the mark of a through route.

Trucks make up 15.8% of traffic on Ringle Avenue and 15.7% on Division Street, against 10.1% across all roads in the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1US 51Motorway · 50,457vehicles5,074trucks · 10.1%
Road class
Motorway
Congestion ratio
35.4%
Median trip time
31.2 min
Drivers’ median age
49.2 yrs
Drivers’ average income
$81,662

Delays build on US 51: its congestion ratio of 35% over free-flow time is well above the county's 12%.

2I 39Motorway · 29,783vehicles4,385trucks · 14.7%
Road class
Motorway
Congestion ratio
35.0%
Median trip time
39.6 min
Drivers’ median age
48.5 yrs
Drivers’ average income
$83,507

Travel on I 39's busiest stretch runs 35% over free-flow time, against 12% across the county, so expect slower peak hours.

3WI 29Motorway · 21,302vehicles3,137trucks · 14.7%
Road class
Motorway
Congestion ratio
22.8%
Median trip time
33.7 min
Drivers’ median age
49.1 yrs
Drivers’ average income
$79,264

WI 29 is a trunk route for the county, carrying 5.3 times the county average on its busiest stretch; trucks are 14.7% of it, above the county-wide 10.1%.

4Grand AvenueSecondary road · 18,098vehicles878trucks · 4.8%
Road class
Secondary road
Congestion ratio
21.1%
Median trip time
29.0 min
Drivers’ median age
49.2 yrs
Drivers’ average income
$78,411

At 4.5 times the county average, Grand Avenue draws drivers from neighborhoods averaging $78,411 in household income.

5Stewart AvenuePrimary road · 17,668vehicles807trucks · 4.6%
Road class
Primary road
Congestion ratio
22.5%
Median trip time
34.8 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$68,423

The busiest stretch of Stewart Avenue carries 4.4 times the county average; trucks are 4.6% of it, below the county-wide 10.1%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 51Motorway · #1 by traffic50,457vehicles5,074trucks · 10.1%
2I 39Motorway · #2 by traffic29,783vehicles4,385trucks · 14.7%
3WI 29Motorway · #3 by traffic21,302vehicles3,137trucks · 14.7%
4Ringle AvenueTrunk road · 12,557vehicles1,988trucks · 15.8%
Road class
Trunk road
Median trip time
44.8 min
Drivers’ median age
51.0 yrs
Drivers’ average income
$80,733

On its busiest stretch, Ringle Avenue carries 3.1 times the county average; trucks are 15.8% of it, above the county-wide 10.1%.

5Division StreetTrunk road · 7,807vehicles1,222trucks · 15.7%
Road class
Trunk road
Congestion ratio
9.6%
Median trip time
38.2 min
Drivers’ median age
49.1 yrs
Drivers’ average income
$68,509

Division Street carries 95% more than the county average at its busiest, 1,222 of them trucks (15.7%, above the county-wide 10.1%).

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

MarathonDepartment 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 Marathon County

The same traffic breakdown for the areas closest to Marathon County, Wisconsin.

Need segment-level traffic data?

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