Lake Koshkonong, WI truck route planning & crash data
Plan safer truck routes in Lake Koshkonong: commercial truck and garbage truck crashes in Lake 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 |
Jefferson County sits below Wisconsin 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
Police reported 481 crashes involving commercial trucks in Jefferson County since 2015: 185 people were injured and 21 were killed.
Across the years with complete reporting, that is roughly one truck crash every 9 days.
With 0 truck crashes reported in Lake Koshkonong since 2015, this page uses Jefferson County numbers for its patterns and comparisons.
When crashes happen
The worst month is January with 13.3% of truck crashes; the quietest is June at 3.7%.
Winter months (Nov–Mar) carry 49.7% of truck crashes, vs 44.9% for Wisconsin.
More truck crashes happen at 9–10 am than at any other hour (9.6%).
Road surface: 15.9% of truck crashes were on snow, slush or ice (Wisconsin: 13.4%).
Where crashes happen
US-12 leads within 10 miles of Lake Koshkonong with 5 fatal crashes involving a large truck since 2015. After it: I-39 (3), CR-M (1) and SR-26 (1).
Garbage & waste trucks
Garbage trucks account for 19 of the truck crashes here, or 4.0%, compared with 2.7% in Wisconsin.
Route planning tips for Lake Koshkonong fleets
- Plan January schedules with more margin; it is the worst month for truck crashes in Jefferson County.
- Where you can, review stops along US-12; it has the most fatal large-truck crashes nearby.
- 31.6% of truck crashes happen between 6 and 10 am, above Wisconsin; consider earlier or later starts where possible.
- Icy and snowy roads show up in 15.9% of truck crashes here, more than Wisconsin; schedule winter checks early.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 | 5 |
| I-39 | 3 |
| CR-M | 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 |
Lake Koshkonong at a glance
| Land area | 14.1 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 |
In the 1990s about 36 truck crashes a year were reported; in the 2020s, about 44. Reporting coverage also changed between these periods. NHTSA counts 2.0 fatal large-truck crashes a year in 2016–19 and 1.8 a year in 2020–24.
Nearby places
Questions fleets ask about Lake Koshkonong
How many truck crashes happen in Lake Koshkonong?
Since 2015, 481 crashes involving commercial trucks were reported in Jefferson County (185 injured, 21 killed).
Which road has the most fatal truck crashes in Lake Koshkonong?
Since 2015, US-12 has had the most fatal large-truck crashes within 10 miles of Lake Koshkonong: 5.
When do most truck crashes happen in Lake Koshkonong?
Truck crashes in Jefferson County peak in January, with 13.3% of the year's crashes.
Are garbage truck crashes common in Lake Koshkonong?
Since 2015, Jefferson County has reported 19 garbage-truck crashes, or 4.0% of its truck crashes.
How does Lake Koshkonong compare with Wisconsin for truck crashes?
The yearly rate is 47.7 truck crashes per 100,000 residents in Jefferson County, vs 42.6 for Wisconsin.
How do I plan a garbage truck route in Lake Koshkonong?
Paste your stops into the free CurbWaste Route Planner: it scores your route against fatal-crash locations, suggests safer alternatives and flags low bridges.
2026 is a partial year. Updated October 2026.