Johnstown Town, Rock County, WI truck route planning & crash data
Plan safer truck routes in Johnstown Town, Rock County: commercial truck and garbage truck crashes in Johnstown Town, Rock County and Rock County, dangerous roads, seasonality and route safety data for fleets. Patterns use Rock County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
13 of 1,235 truck crashes since 2015.
Deadliest roads
How Rock County compares with Wisconsin
Rock County against Wisconsin and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Rock County stands out
Full comparison
| Measure (2015–2025) | Rock County | Wisconsin | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 64.5 | 42.6 | 49.7 | 1.5× the state |
| Deaths per 100 crashes | 3.2 | 3.4 | 3.4 | same |
| Injuries per crash | 0.58 | 0.46 | 0.49 | 1.3× the state |
| Garbage-truck share | 1.0% | 2.7% | 2.3% | 63% below the state |
| On snow, slush or ice | 16.3% | 13.4% | 6.2% | 1.2× the state |
| Morning rush (6–10 am) | 20.8% | 26.9% | 23.7% | 23% below the state |
| In rain, sleet or snow | 22.7% | 16.5% | 13.8% | 1.4× the state |
| Winter months (Nov–Mar) | 50.6% | 44.9% | 41.9% | 1.1× the state |
| After dark | 28.4% | 20.9% | 24.8% | 1.4× the state |
Compared with Wisconsin, Rock County is lower on garbage-truck share and morning rush (6–10 am). It stands out for higher crashes per 100k residents / yr, injuries per crash and on snow, slush or ice.
Rock County at a glance: January worst month: 16.9% of truck crashes, vs 8.3% in an average month.
Overview
Police reported 1,235 crashes involving commercial trucks in Rock County since 2015: 702 people were injured and 38 were killed.
In complete reporting years that works out to about one truck crash every 3 days.
Johnstown Town, Rock County had 11 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Rock County numbers.
When crashes happen
January has the most truck crashes, 16.9% of the yearly total, while April has the fewest (5.3%).
November through March accounts for 50.6% of truck crashes here, compared with 44.9% in Wisconsin.
The busiest hour is 12–1 pm, with 11.4% of truck crashes.
Road surface: 16.3% of truck crashes were on snow, slush or ice (Wisconsin: 13.4%).
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of Johnstown happened on US-12 (5), US-14 (5), I-39 (4), CR-M (1) and Carvers Rock Rd (1); no road leads clearly.
Garbage & waste trucks
13 crashes involved a garbage or refuse truck, a 1.1% share (Wisconsin: 2.7%).
Route planning tips for Johnstown Town, Rock County fleets
- Review driver schedules for January, the month with the most truck crashes.
- 16.3% of truck crashes were on snow, slush or ice, above Wisconsin; plan winter equipment checks before the season.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
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 Rock County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-12 | 5 |
| US-14 | 5 |
| I-39 | 4 |
| CR-M | 1 |
| Carvers Rock Rd | 1 |
| SR-11 | 1 |
| SR-26 | 1 |
| SR-59 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Rock County) |
|---|---|
| I-039 | 549 |
| I-043 | 53 |
| Ush 014 | 46 |
| Sth 011 | 39 |
| SR-039 | 36 |
| Sth 081 | 35 |
| Ush 051 | 23 |
| Sth 059 | 20 |
Johnstown Town, Rock County at a glance
| Population | 766 |
| Land area | 36.0 sq mi |
| Density | 21 per sq mi |
| Median household income (ZIP 53505) | $91,500 |
| Median home value (ZIP 53505) | $294,782 |
Waste facilities and haulers nearby
Historical data: truck crashes in Rock 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 | 82 | — | 2.4 |
| 2000s | 111 | +35% | 2.8 |
| 2010s | 99 | -11% | 3.0 |
| 2020s | 103 | +5% | 3.0 |
From the 1990s to the 2020s, yearly reported truck crashes went from 82 to 103. Some of the change may reflect how crashes were reported. NHTSA counts 3.2 fatal large-truck crashes a year in 2016–19 and 3.0 a year in 2020–24.
Nearby places
Questions fleets ask about Johnstown Town, Rock County
How common are truck crashes in Johnstown Town, Rock County?
1,235 truck crashes have been reported in Rock County since 2015, with 38 deaths and 702 injuries.
Which month has the most truck crashes in Johnstown Town, Rock County?
Truck crashes in Rock County peak in January, with 16.9% of the year's crashes.
Are garbage truck crashes common in Johnstown Town, Rock County?
13 crashes involving garbage or refuse trucks have been reported in Rock County since 2015, 1.1% of all truck crashes.
What is the truck crash rate in Johnstown Town, Rock County compared with Wisconsin?
Rock County records 64.5 truck crashes per 100,000 residents a year, against 42.6 across Wisconsin.
How can I plan a safer truck route in Johnstown Town, Rock County?
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.