Sun Prairie, SD truck route planning & crash data
Plan safer truck routes in Sun Prairie: commercial truck and garbage truck crashes in Sun Prairie and McCook County, dangerous roads, seasonality and route safety data for fleets. Patterns use McCook County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
1 of 120 truck crashes since 2015.
Deadliest roads
No fatal large-truck crashes with a road name recorded here since 2015.
How McCook County compares with South Dakota
McCook County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where McCook County stands out
Full comparison
| Measure (2015–2025) | McCook County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 168.6 | 42.0 | 49.7 | 4.0× the state |
| Deaths per 100 crashes | 1.9 | 5.2 | 3.4 | 63% below the state |
| Injuries per crash | 0.06 | 0.13 | 0.49 | 54% below the state |
| Garbage-truck share | 0.9% | 1.6% | 2.3% | 42% below the state |
| On snow, slush or ice | 54.2% | 28.6% | 6.2% | 1.9× the state |
| Morning rush (6–10 am) | 20.6% | 22.2% | 23.7% | 7% below the state |
| In rain, sleet or snow | 25.2% | 17.5% | 13.8% | 1.4× the state |
| Winter months (Nov–Mar) | 63.5% | 48.8% | 41.9% | 1.3× the state |
| After dark | 18.7% | 22.8% | 24.8% | 18% below the state |
McCook County sits below South Dakota on deaths per 100 crashes, injuries per crash and garbage-truck share. It runs above South Dakota on crashes per 100k residents / yr, on snow, slush or ice and in rain, sleet or snow.
What stands out in McCook County: March the month with the most truck crashes: 22.5% of the year's total.
Overview
Police reported 120 crashes involving commercial trucks in McCook County since 2015: 8 people were injured and 4 were killed.
That averages about one truck crash every 38 days in fully reported years.
With 0 truck crashes reported in Sun Prairie since 2015, this page uses McCook County numbers for its patterns and comparisons.
When crashes happen
March has the most truck crashes, 22.5% of the yearly total, while April has the fewest (3.3%).
Winter months (Nov–Mar) carry 63.5% of truck crashes, vs 48.8% for South Dakota.
The busiest hour is 1–2 pm, with 11.7% of truck crashes.
Snow, slush or ice was on the road in 54.2% of truck crashes, compared with 28.6% in South Dakota.
Where crashes happen
No fatal crash involving a large truck has a recorded location within 10 miles of Sun Prairie since 2015.
Garbage & waste trucks
Garbage and refuse trucks were involved in 1 crash, 0.8% of the total, against 1.6% across South Dakota.
Route planning tips for Sun Prairie fleets
- Plan March schedules with more margin; it is the worst month for truck crashes in McCook County.
- With 54.2% of truck crashes on snow, slush or ice (above South Dakota), plan winter equipment checks early.
- 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 McCook County
By hour of day
Most dangerous roads for trucks
No fatal crashes involving a large truck with a road name were recorded within 10 miles since 2015.
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (McCook County) |
|---|---|
| I-90 | 74 |
| US-81 | 16 |
| Ave | 11 |
| Sd Hwy 42 | 7 |
| Sd Hwy 38 | 4 |
| Sd Hwy 262 | 3 |
Sun Prairie at a glance
| Population | 137 |
| Land area | 36.5 sq mi |
| Density | 4 per sq mi |
| Median household income (ZIP 57058) | $84,286 |
| Median home value (ZIP 57058) | $218,079 |
Waste facilities and haulers nearby
Historical data: truck crashes in McCook 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 | 4 | — | 0.6 |
| 2000s | 7 | +76% | 0.2 |
| 2010s | 9 | +38% | 0.2 |
| 2020s | 11 | +17% | 0.4 |
Reported truck crashes averaged 4 a year in the 1990s and 11 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. NHTSA counts 0.0 fatal large-truck crashes a year in 2016–19 and 0.4 a year in 2020–24.
Nearby places
Questions fleets ask about Sun Prairie
How common are truck crashes in Sun Prairie?
120 truck crashes have been reported in McCook County since 2015, with 4 deaths and 8 injuries.
What is the worst month for truck crashes in Sun Prairie?
March has the most truck crashes in McCook County, 22.5% of the yearly total.
Are garbage truck crashes common in Sun Prairie?
Garbage trucks were involved in 1 reported crash in McCook County since 2015 (0.8% of truck crashes).
How do truck crashes in Sun Prairie compare with South Dakota?
The yearly rate is 168.6 truck crashes per 100,000 residents in McCook County, vs 42.0 for South Dakota.
What is the best way to plan truck routes in Sun Prairie?
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.