Star Valley Township, Tripp County, SD truck route planning & crash data
Plan safer truck routes in Star Valley Township, Tripp County: commercial truck and garbage truck crashes in Star Valley Township, Tripp County 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 has lower values than South Dakota for deaths per 100 crashes, on snow, slush or ice and morning rush (6–10 am). It stands out for higher crashes per 100k residents / yr, injuries per crash and garbage-truck share.
The headline for Tripp County: October worst month: 23.5% of truck crashes, vs 8.3% in an average month.
Overview
Police reported 34 crashes involving commercial trucks in Tripp County since 2015: 10 people were injured and 1 were killed.
Across the years with complete reporting, that is roughly one truck crash every 125 days.
Only 0 truck crashes were reported in Star Valley Township, Tripp County since 2015; patterns below come from Tripp County as a whole.
When crashes happen
The worst month is October with 23.5% of truck crashes; the quietest is February at 0.0%.
November through March accounts for 40.6% of truck crashes here, compared with 48.8% in South Dakota.
By time of day, 12–1 pm stands out 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
NHTSA lists no located fatal large-truck crashes within 10 miles of Star Valley since 2015.
Garbage & waste trucks
Garbage and refuse trucks were involved in 1 crash, 2.9% of the total, against 1.6% across South Dakota.
Route planning tips for Star Valley Township, Tripp County fleets
- Plan October schedules with more margin; it is the worst month for truck crashes in Tripp County.
- 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 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 |
Star Valley Township, Tripp County at a glance
| Population | 24 |
| Land area | 42.0 sq mi |
| Density | 1 per sq mi |
| Median household income (ZIP 57541) | $250,001 |
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 Star Valley Township, Tripp County
How many truck accidents are there in Star Valley Township, Tripp County?
Since 2015, 34 crashes involving commercial trucks were reported in Tripp County (10 injured, 1 killed).
What is the worst month for truck crashes in Star Valley Township, Tripp County?
October has the most truck crashes in Tripp County, 23.5% of the yearly total.
How many garbage truck accidents happen in Star Valley Township, Tripp County?
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 Star Valley Township, Tripp County compare with South Dakota?
Per 100,000 residents, Tripp County has 50.9 truck crashes a year; South Dakota has 42.0.
How can I plan a safer truck route in Star Valley Township, Tripp County?
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.