Lake Wisconsin, WI truck route planning & crash data
Plan safer truck routes in Lake Wisconsin: commercial truck and garbage truck crashes in Lake Wisconsin and Sauk County, dangerous roads, seasonality and route safety data for fleets. Patterns use Sauk County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
12 of 467 truck crashes since 2015.
Deadliest roads
How Sauk County compares with Wisconsin
Sauk County against Wisconsin and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Sauk County stands out
Full comparison
| Measure (2015–2025) | Sauk County | Wisconsin | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 60.3 | 42.6 | 49.7 | 1.4× the state |
| Deaths per 100 crashes | 4.8 | 3.4 | 3.4 | 1.4× the state |
| Injuries per crash | 0.42 | 0.46 | 0.49 | 9% below the state |
| Garbage-truck share | 2.7% | 2.7% | 2.3% | same |
| On snow, slush or ice | 15.4% | 13.4% | 6.2% | 1.2× the state |
| Morning rush (6–10 am) | 29.2% | 26.9% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 19.3% | 16.5% | 13.8% | 1.2× the state |
| Winter months (Nov–Mar) | 48.1% | 44.9% | 41.9% | 1.1× the state |
| After dark | 25.4% | 20.9% | 24.8% | 1.2× the state |
Compared with Wisconsin, Sauk County is lower on injuries per crash. It stands out for higher crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice.
The headline for Sauk County: January the month with the most truck crashes: 13.9% of the year's total.
Overview
Sauk County has recorded 467 truck crashes since 2015, with 200 people injured and 23 killed.
In complete reporting years that works out to about one truck crash every 9 days.
Lake Wisconsin had 0 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Sauk County numbers.
When crashes happen
January has the most truck crashes, 13.9% of the yearly total, while April has the fewest (6.0%).
The five winter months (November to March) hold 48.1% of truck crashes, against 44.9% across Wisconsin.
The busiest hour is 8–9 am, with 8.2% of truck crashes.
15.4% of truck crashes here happened on snow, slush or ice, against 13.4% across Wisconsin.
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of Lake Wisconsin happened on I-39 (2), SR-33 (2), CR-CS (1), Mill St E (1) and SR-113 (1); no road leads clearly.
Garbage & waste trucks
Garbage trucks account for 12 of the truck crashes here, or 2.6%, compared with 2.7% in Wisconsin.
Route planning tips for Lake Wisconsin fleets
- Review driver schedules for January, the month with the most truck crashes.
- 29.2% of truck crashes happen between 6 and 10 am, above Wisconsin; consider earlier or later starts where possible.
- 15.4% of truck crashes were on snow, slush or ice, above Wisconsin; plan winter equipment checks before the season.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
About the data
This report uses the FMCSA crash file (reported crashes of trucks over 10,000 lb) and NHTSA FARS (fatal crashes). It reports the numbers without guessing at reasons.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Sauk County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-39 | 2 |
| SR-33 | 2 |
| CR-CS | 1 |
| Mill St E | 1 |
| SR-113 | 1 |
| SR-60 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Sauk County) |
|---|---|
| I-090 | 200 |
| Sth 023 | 38 |
| Ush 012 | 21 |
| Sth 033 | 18 |
| Ush 014 | 13 |
| SR-090 | 10 |
| Sth 060 | 9 |
| Sth 136 | 7 |
Lake Wisconsin at a glance
| Land area | 13.4 sq mi |
| Median household income (ZIP 53561) | $91,103 |
| Median home value (ZIP 53561) | $428,463 |
Waste facilities and haulers nearby
Historical data: truck crashes in Sauk County since the 1990s
Combines the FMCSA crash file (all reported truck crashes, real coverage from about 1990) with NHTSA FARS (fatal crashes involving a large truck, 1982–2024).
| Decade | Truck crashes / yr | Change | Fatal crashes / yr (FARS) |
|---|---|---|---|
| 1990s | 38 | — | 1.7 |
| 2000s | 50 | +33% | 1.4 |
| 2010s | 39 | -23% | 1.1 |
| 2020s | 42 | +8% | 2.0 |
Reported truck crashes averaged 38 a year in the 1990s and 42 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. NHTSA counts 1.0 fatal large-truck crashes a year in 2016–19 and 2.0 a year in 2020–24.
Nearby places
Questions fleets ask about Lake Wisconsin
How many truck accidents are there in Lake Wisconsin?
Sauk County has had 467 reported truck crashes since 2015, injuring 200 people and killing 23.
What is the worst month for truck crashes in Lake Wisconsin?
Truck crashes in Sauk County peak in January, with 13.9% of the year's crashes.
How many garbage truck accidents happen in Lake Wisconsin?
Garbage trucks were involved in 12 reported crashes in Sauk County since 2015 (2.6% of truck crashes).
How does Lake Wisconsin compare with Wisconsin for truck crashes?
Sauk County records 60.3 truck crashes per 100,000 residents a year, against 42.6 across Wisconsin.
What is the best way to plan truck routes in Lake Wisconsin?
The free Route Planner takes your stops and returns a route risk score, safer alternatives and low-bridge warnings.
2026 is a partial year. Updated October 2026.