Star Valley Township, Gregory County, SD truck route planning & crash data
Plan safer truck routes in Star Valley Township, Gregory County: commercial truck and garbage truck crashes in Star Valley Township, Gregory County and Gregory County, dangerous roads, seasonality and route safety data for fleets. Patterns use Gregory County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
0 of 36 truck crashes since 2015.
Deadliest roads
How Gregory County compares with South Dakota
Gregory County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Gregory County stands out
Full comparison
| Measure (2015–2025) | Gregory County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 73.0 | 42.0 | 49.7 | 1.7× the state |
| Deaths per 100 crashes | 3.0 | 5.2 | 3.4 | 42% below the state |
| Injuries per crash | 0.39 | 0.13 | 0.49 | 3.0× the state |
| Garbage-truck share | 0.0% | 1.6% | 2.3% | 100% below the state |
| On snow, slush or ice | 27.3% | 28.6% | 6.2% | same |
| Morning rush (6–10 am) | 33.3% | 22.2% | 23.7% | 1.5× the state |
| In rain, sleet or snow | 15.2% | 17.5% | 13.8% | 14% below the state |
| Winter months (Nov–Mar) | 72.7% | 48.8% | 41.9% | 1.5× the state |
| After dark | 39.4% | 22.8% | 24.8% | 1.7× the state |
Compared with South Dakota, Gregory County is lower on deaths per 100 crashes, garbage-truck share and in rain, sleet or snow. Where it is higher: crashes per 100k residents / yr, injuries per crash and morning rush (6–10 am).
The headline for Gregory County: January worst month: 30.6% of truck crashes, vs 8.3% in an average month.
Overview
Police reported 36 crashes involving commercial trucks in Gregory County since 2015: 13 people were injured and 1 were killed.
In complete reporting years that works out to about one truck crash every 122 days.
Only 0 truck crashes were reported in Star Valley Township, Gregory County since 2015; patterns below come from Gregory County as a whole.
When crashes happen
The worst month is January with 30.6% of truck crashes; the quietest is April at 0.0%.
The five winter months (November to March) hold 72.7% of truck crashes, against 48.8% across South Dakota.
By time of day, 9–10 am stands out with 13.9% of truck crashes.
Road surface: 27.3% of truck crashes were on snow, slush or ice (South Dakota: 28.6%).
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of Star Valley since 2015: US-281 (1). No single road stands out.
Garbage & waste trucks
Since 2015, no garbage-truck crashes were reported for Gregory County.
Route planning tips for Star Valley Township, Gregory County fleets
- Review driver schedules for January, the month with the most truck crashes.
- 33.3% of truck crashes happen between 6 and 10 am, above South Dakota; consider earlier or later starts where possible.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
About the data
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Gregory County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-281 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Gregory County) |
|---|---|
| US-18 | 22 |
| Sd Hwy 44 | 8 |
| US-281 | 3 |
| Lucas Rd | 1 |
| Sd Hwy 47 | 1 |
Star Valley Township, Gregory County at a glance
| Population | 81 |
| Land area | 48.3 sq mi |
| Density | 2 per sq mi |
| Median household income (ZIP 57335) | $92,813 |
| Median home value (ZIP 57335) | $103,774 |
Waste facilities and haulers nearby
Historical data: truck crashes in Gregory 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 | 2 | — | 0.2 |
| 2000s | 2 | -5% | 0.4 |
| 2010s | 3 | +53% | 0.2 |
| 2020s | 4 | +26% | 0.0 |
Reported truck crashes averaged 2 a year in the 1990s and 4 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal crashes involving a large truck averaged 0.2 a year in 2016–19 and 0.0 a year in 2020–24.
Nearby places
Questions fleets ask about Star Valley Township, Gregory County
How common are truck crashes in Star Valley Township, Gregory County?
Since 2015, 36 crashes involving commercial trucks were reported in Gregory County (13 injured, 1 killed).
What is the worst month for truck crashes in Star Valley Township, Gregory County?
The worst month is January: 30.6% of truck crashes in Gregory County happen then.
How many garbage truck crashes are there in Star Valley Township, Gregory County?
Garbage trucks were involved in 0 reported crashes in Gregory County since 2015 (0.0% of truck crashes).
How do truck crashes in Star Valley Township, Gregory County compare with South Dakota?
The yearly rate is 73.0 truck crashes per 100,000 residents in Gregory County, vs 42.0 for South Dakota.
How do I plan a garbage truck route in Star Valley Township, Gregory 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.