I-41 in Wisconsin: fatal crashes
From 2015 to 2024, 92 fatal crashes on I-41 in Wisconsin killed 101 people, the 3rd most of any numbered road in Wisconsin. In 2024 there were 6 fatal crashes and 6 deaths on the road.
An interstate running through 11 counties of Wisconsin. All fatal crashes in Wisconsin.
Deaths on I-41 in Wisconsin by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 6 | 6 |
| 2023 | 7 | 9 |
| 2022 | 13 | 13 |
| 2021 | 12 | 13 |
| 2020 | 11 | 13 |
| 2019 | 15 | 18 |
| 2018 | 13 | 13 |
| 2017 | 8 | 8 |
| 2016 | 7 | 8 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Where on I-41 in Wisconsin: the counties with the most fatal crashes
Milwaukee County County had the most fatal crashes on I-41 from 2015 to 2024: 19, with 19 deaths. Milwaukee, Washington and Outagamie counties together held 49% of fatal crashes in I-41 in Wisconsin from 2015 to 2024; the 9 listed held 97%. Counties are listed from 5 fatal crashes.
| County | 2024 | 2015 to 2024 | Deaths | |
|---|---|---|---|---|
| 1 | Milwaukee County | 2 | 19 | 19 |
| 2 | Washington County | 1 | 16 | 18 |
| 3 | Outagamie County | 1 | 10 | 10 |
| 4 | Brown County | 1 | 9 | 9 |
| 5 | Winnebago County | 0 | 9 | 9 |
| 6 | Fond du Lac County | 1 | 7 | 9 |
| 7 | Kenosha County | 0 | 7 | 9 |
| 8 | Racine County | 0 | 6 | 8 |
| 9 | Waukesha County | 0 | 6 | 6 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
When fatal crashes happen on I-41 in Wisconsin
Too few crashes to name a heaviest slot. The grid shows the shares; a share is only given over 20 crashes.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 3.3 percent, 3 fatal crashes | 2.2 percent, 2 fatal crashes | 2.2 percent, 2 fatal crashes | 1.1 percent, 1 fatal crashes | 2.2 percent, 2 fatal crashes | 5.4 percent, 5 fatal crashes |
| Mon | 0.0 percent, 0 fatal crashes | 1.1 percent, 1 fatal crashes | 1.1 percent, 1 fatal crashes | 0.0 percent, 0 fatal crashes | 2.2 percent, 2 fatal crashes | 1.1 percent, 1 fatal crashes |
| Tue | 0.0 percent, 0 fatal crashes | 3.3 percent, 3 fatal crashes | 1.1 percent, 1 fatal crashes | 1.1 percent, 1 fatal crashes | 5.4 percent, 5 fatal crashes | 4.3 percent, 4 fatal crashes |
| Wed | 2.2 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes | 4.3 percent, 4 fatal crashes | 1.1 percent, 1 fatal crashes | 5.4 percent, 5 fatal crashes | 1.1 percent, 1 fatal crashes |
| Thu | 4.3 percent, 4 fatal crashes | 0.0 percent, 0 fatal crashes | 3.3 percent, 3 fatal crashes | 1.1 percent, 1 fatal crashes | 1.1 percent, 1 fatal crashes | 4.3 percent, 4 fatal crashes |
| Fri | 3.3 percent, 3 fatal crashes | 4.3 percent, 4 fatal crashes | 6.5 percent, 6 fatal crashes | 4.3 percent, 4 fatal crashes | 3.3 percent, 3 fatal crashes | 2.2 percent, 2 fatal crashes |
| Sat | 1.1 percent, 1 fatal crashes | 1.1 percent, 1 fatal crashes | 1.1 percent, 1 fatal crashes | 0.0 percent, 0 fatal crashes | 2.2 percent, 2 fatal crashes | 5.4 percent, 5 fatal crashes |
By hour
By month
- Jan8.7%
- Feb5.4%
- Mar6.5%
- Apr4.3%
- May10.9%
- Jun9.8%
- Jul9.8%
- Aug12.0%
- Sep2.2%
- Oct12.0%
- Nov12.0%
- Dec6.5%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Fatal crashes per mile on I-41 in Wisconsin
5.27 fatal crashes a year per 100 miles over 2015 to 2024, on 174 miles of I-41 in Wisconsin, against 4.43 for all interstates in Wisconsin. That ranks 1 of 4 interstates in Wisconsin and 127 of 171 interstate pages on this site.
Mileage from the FHWA Interstate route log (table 1), the only figure here not counted from FARS. Crashes per mile of road, not per vehicle: FARS records crashes, not traffic.
What fatal crashes on I-41 in Wisconsin first hit
The first harmful event was a collision with another vehicle in 41%; a fixed object such as a tree, pole or barrier in 24%, a pedestrian in 11%, a rollover in 11%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 38 | 41% |
| Fixed object (tree, pole, barrier, ditch) | 22 | 24% |
| Pedestrian | 10 | 11% |
| Rollover | 10 | 11% |
| Other | 9 | 9.8% |
| Parked vehicle | 3 | 3.3% |
| Cyclist | 0 | 0.0% |
| Not reported | 0 | 0.0% |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
How fatal crashes on I-41 in Wisconsin compare with the state
A drinking driver was recorded in 30% of fatal crashes in I-41 in Wisconsin from 2015 to 2024, below the Wisconsin share of 33%; speeding in 33%, above the Wisconsin share of 31%; a hit-and-run in 2.2%, below the Wisconsin share of 5.4%; 54% of passenger-vehicle occupants killed with belt use known were unbelted, above the Wisconsin share of 48%. Shares of fatal crashes from 2015 to 2024, against the share across all of Wisconsin. A share is only given over 20 crashes.
| I-41 | Wisconsin | ||
|---|---|---|---|
| On rural stretches | 42% | 63% | below the Wisconsin share |
| At or near an intersection | 2.2% | 28% | below the Wisconsin share |
| In the dark, road unlit | 36% | 27% | above the Wisconsin share |
| A drinking driver | 30% | 33% | below the Wisconsin share |
| Speeding | 33% | 31% | above the Wisconsin share |
| Occupants killed unbelted | 54% | 48% | above the Wisconsin share |
| Hit-and-run | 2.2% | 5.4% | below the Wisconsin share |
| A motorcycle involved | 12% | 17% | below the Wisconsin share |
| Pedestrians among the dead | 12% | 9.5% | above the Wisconsin share |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Questions about fatal crashes in I-41 in Wisconsin
- How many fatal crashes have there been on I-41 in Wisconsin?
- 92 fatal crashes killed 101 people on I-41 in Wisconsin from 2015 to 2024. In 2024 there were 6 fatal crashes and 6 deaths.
- Where on I-41 in Wisconsin do the most fatal crashes happen?
- Milwaukee County had the most fatal crashes on I-41 from 2015 to 2024: 19, with 19 deaths. Washington County was second with 16.
- How dangerous is I-41 in Wisconsin per mile?
- 5.27 fatal crashes a year per 100 miles over 2015 to 2024, on 174 miles of road, against 4.43 for all interstates in Wisconsin. That ranks 1 of 4 interstates in Wisconsin and 127 of 171 interstate pages on this site. FARS records crashes, not traffic, so this is crashes per mile of road, not per vehicle.
Other roads in Wisconsin with a page
- I-39
- I-43
- I-94
- State Highway 11
- State Highway 13
- State Highway 145
- State Highway 190
- State Highway 32
- State Highway 35
- US 10
- US 12
- US 14
All fatal crashes in Wisconsin, with every road ranked.
Where the I-41 numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash whose road NHTSA filed as I-41 in Wisconsin (filed under 2 spellings, such as "I-41", "I-41 SB"). Ramps, frontage and service roads are left out. A fatal crash is one in which someone died within 30 days. The full method.