Koshkonong, WI truck route planning & crash data
Plan safer truck routes in Koshkonong: commercial truck and garbage truck crashes in Koshkonong and Jefferson County, dangerous roads, seasonality and route safety data for fleets. Patterns use Jefferson County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
19 of 481 truck crashes since 2015.
Deadliest roads
How Jefferson County compares with Wisconsin
Jefferson County against Wisconsin and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Jefferson County stands out
Full comparison
| Measure (2015–2025) | Jefferson County | Wisconsin | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 47.7 | 42.6 | 49.7 | 1.1× the state |
| Deaths per 100 crashes | 4.6 | 3.4 | 3.4 | 1.4× the state |
| Injuries per crash | 0.39 | 0.46 | 0.49 | 15% below the state |
| Garbage-truck share | 4.2% | 2.7% | 2.3% | 1.5× the state |
| On snow, slush or ice | 15.9% | 13.4% | 6.2% | 1.2× the state |
| Morning rush (6–10 am) | 31.6% | 26.9% | 23.7% | 1.2× the state |
| In rain, sleet or snow | 16.8% | 16.5% | 13.8% | same |
| Winter months (Nov–Mar) | 49.7% | 44.9% | 41.9% | 1.1× the state |
| After dark | 21.0% | 20.9% | 24.8% | same |
Compared with Wisconsin, Jefferson County is lower on injuries per crash. It stands out for higher crashes per 100k residents / yr, deaths per 100 crashes and garbage-truck share.
Jefferson County at a glance: 1 in 24 crashes involve a garbage truck (19 since 2015), vs 2.7% across Wisconsin.
Overview
Jefferson County has recorded 481 truck crashes since 2015, with 185 people injured and 21 killed.
In complete reporting years that works out to about one truck crash every 9 days.
Only 20 truck crashes were reported in Koshkonong since 2015; patterns below come from Jefferson County as a whole.
When crashes happen
January has the most truck crashes, 13.3% of the yearly total, while June has the fewest (3.7%).
Winter months (Nov–Mar) carry 49.7% of truck crashes, vs 44.9% for Wisconsin.
By time of day, 9–10 am stands out with 9.6% of truck crashes.
Snow, slush or ice was on the road in 15.9% of truck crashes, compared with 13.4% in Wisconsin.
Where crashes happen
US-12 leads within 10 miles of Koshkonong with 6 fatal crashes involving a large truck since 2015. After it: CR-Y (1), SR-26 (1) and SR-59 (1).
Garbage & waste trucks
19 crashes involved a garbage or refuse truck, a 4.0% share (Wisconsin: 2.7%).
Route planning tips for Koshkonong fleets
- Review driver schedules for January, the month with the most truck crashes.
- Check whether your routes use US-12, the road with the most fatal truck crashes in this area.
- The morning rush (6–10 am) holds 31.6% of truck crashes here, more than Wisconsin; adjust start times where you can.
- With 15.9% of truck crashes on snow, slush or ice (above Wisconsin), plan winter equipment checks early.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
About the data
Sources: the FMCSA crash file for all reported truck crashes and NHTSA FARS for fatal crashes with a large truck. Every statement here comes straight from those numbers.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Jefferson County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-12 | 6 |
| CR-Y | 1 |
| SR-26 | 1 |
| SR-59 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Jefferson County) |
|---|---|
| I-094 | 166 |
| Sth 026 | 56 |
| Ush 012 | 22 |
| Ush 018 | 16 |
| Parking Lot | 12 |
| Cth | 9 |
| Cth F | 9 |
| Cth B | 8 |
Koshkonong at a glance
| Population | 3,769 |
| Land area | 41.3 sq mi |
| Density | 91 per sq mi |
| Median household income (ZIP 53538) | $82,783 |
| Median home value (ZIP 53538) | $244,876 |
Waste facilities and haulers nearby
Historical data: truck crashes in Jefferson 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 | 36 | — | 1.7 |
| 2000s | 41 | +14% | 2.3 |
| 2010s | 37 | -10% | 1.2 |
| 2020s | 44 | +18% | 1.8 |
From the 1990s to the 2020s, yearly reported truck crashes went from 36 to 44. Some of the change may reflect how crashes were reported. Fatal large-truck crashes: 2.0 a year in 2016–19, 1.8 a year in 2020–24.
Nearby places
Questions fleets ask about Koshkonong
How many truck accidents are there in Koshkonong?
Since 2015, 481 crashes involving commercial trucks were reported in Jefferson County (185 injured, 21 killed).
Where do fatal truck crashes happen most in Koshkonong?
NHTSA data shows US-12 with 6 fatal large-truck crashes within 10 miles of Koshkonong since 2015, the highest of any road.
What is the worst month for truck crashes in Koshkonong?
January has the most truck crashes in Jefferson County, 13.3% of the yearly total.
How many garbage truck crashes are there in Koshkonong?
Since 2015, Jefferson County has reported 19 garbage-truck crashes, or 4.0% of its truck crashes.
How do truck crashes in Koshkonong compare with Wisconsin?
The yearly rate is 47.7 truck crashes per 100,000 residents in Jefferson County, vs 42.6 for Wisconsin.
What is the best way to plan truck routes in Koshkonong?
Use the free Route Planner: enter your stops to get a risk score, safer alternatives and the low bridges on your route.
2026 is a partial year. Updated October 2026.