Willow Creek, SD truck route planning & crash data
Plan safer truck routes in Willow Creek: commercial truck and garbage truck crashes in Willow Creek and Tripp County, dangerous roads, seasonality and route safety data for fleets. Patterns use Tripp County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
1 of 34 truck crashes since 2015.
Deadliest roads
No fatal large-truck crashes with a road name recorded here since 2015.
How Tripp County compares with South Dakota
Tripp County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Tripp County stands out
Full comparison
| Measure (2015–2025) | Tripp County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 50.9 | 42.0 | 49.7 | 1.2× the state |
| Deaths per 100 crashes | 3.1 | 5.2 | 3.4 | 40% below the state |
| Injuries per crash | 0.28 | 0.13 | 0.49 | 2.2× the state |
| Garbage-truck share | 3.1% | 1.6% | 2.3% | 1.9× the state |
| On snow, slush or ice | 18.8% | 28.6% | 6.2% | 35% below the state |
| Morning rush (6–10 am) | 12.5% | 22.2% | 23.7% | 44% below the state |
| In rain, sleet or snow | 12.5% | 17.5% | 13.8% | 29% below the state |
| Winter months (Nov–Mar) | 40.6% | 48.8% | 41.9% | 17% below the state |
| After dark | 18.8% | 22.8% | 24.8% | 18% below the state |
Tripp County sits below South Dakota on deaths per 100 crashes, on snow, slush or ice and morning rush (6–10 am). Where it is higher: crashes per 100k residents / yr, injuries per crash and garbage-truck share.
The headline for Tripp County: October the month with the most truck crashes: 23.5% of the year's total.
Overview
Since 2015, 34 crashes involving commercial trucks have been reported in Tripp County. They injured 10 people and killed 1.
In complete reporting years that works out to about one truck crash every 125 days.
With 0 truck crashes reported in Willow Creek since 2015, this page uses Tripp County numbers for its patterns and comparisons.
When crashes happen
Truck crashes peak in October (23.5% of the year) and are lowest in February (0.0%).
Winter months (Nov–Mar) carry 40.6% of truck crashes, vs 48.8% for South Dakota.
The busiest hour is 12–1 pm, with 11.8% of truck crashes.
18.8% of truck crashes here happened on snow, slush or ice, against 28.6% across South Dakota.
Where crashes happen
Since 2015, no fatal large-truck crashes with a location were recorded within 10 miles of Willow Creek.
Garbage & waste trucks
Garbage trucks account for 1 of the truck crashes here, or 2.9%, compared with 1.6% in South Dakota.
Route planning tips for Willow Creek fleets
- Build extra time into October routes: it has the most truck crashes here.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
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 Tripp 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 (Tripp County) |
|---|---|
| Sd Hwy 44 | 8 |
| US-18 | 7 |
| Sd Hwy 49 | 4 |
| Ave | 2 |
| US-183 | 2 |
| SR-18 | 1 |
| Sd Hwy 53 | 1 |
| Us 18 Ef | 1 |
Willow Creek at a glance
| Population | 52 |
| Land area | 35.7 sq mi |
| Density | 1 per sq mi |
| Median household income (ZIP 57528) | $61,292 |
Waste facilities and haulers nearby
Historical data: truck crashes in Tripp 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 | 3 | — | 0.0 |
| 2000s | 3 | -20% | 0.3 |
| 2010s | 2 | -12% | 0.1 |
| 2020s | 3 | +45% | 0.6 |
In the 1990s about 3 truck crashes a year were reported; in the 2020s, about 3. Reporting coverage also changed between these periods. Fatal large-truck crashes: 0.0 a year in 2016–19, 0.6 a year in 2020–24.
Nearby places
Questions fleets ask about Willow Creek
How many truck crashes happen in Willow Creek?
34 truck crashes have been reported in Tripp County since 2015, with 1 deaths and 10 injuries.
Which month has the most truck crashes in Willow Creek?
The worst month is October: 23.5% of truck crashes in Tripp County happen then.
Are garbage truck crashes common in Willow Creek?
1 crash involving garbage or refuse trucks have been reported in Tripp County since 2015, 2.9% of all truck crashes.
How do truck crashes in Willow Creek compare with South Dakota?
Per 100,000 residents, Tripp County has 50.9 truck crashes a year; South Dakota has 42.0.
What is the best way to plan truck routes in Willow Creek?
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.