Gregory, SD truck route planning & crash data
Plan safer truck routes in Gregory: commercial truck and garbage truck crashes in Gregory 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 runs above South Dakota on crashes per 100k residents / yr, injuries per crash and garbage-truck share.
What stands out in Tripp County: October the month with the most truck crashes: 23.5% of the year's total.
Overview
Tripp County has recorded 34 truck crashes since 2015, with 10 people injured and 1 killed.
Across the years with complete reporting, that is roughly one truck crash every 125 days.
Only 0 truck crashes were reported in Gregory 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%.
The five winter months (November to March) hold 40.6% of truck crashes, against 48.8% across South Dakota.
By time of day, 12–1 pm stands out with 11.8% of truck crashes.
Snow, slush or ice was on the road in 18.8% of truck crashes, compared with 28.6% in South Dakota.
Where crashes happen
Since 2015, no fatal large-truck crashes with a location were recorded within 10 miles of Gregory.
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 Gregory fleets
- Review driver schedules for October, the month with the most truck crashes.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
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 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 |
Gregory at a glance
| Population | 1,270 |
| Land area | 1.7 sq mi |
| Density | 738 per sq mi |
| Median household income (ZIP 57529) | $75,313 |
| Median home value (ZIP 57529) | $291,551 |
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 |
From the 1990s to the 2020s, yearly reported truck crashes went from 3 to 3. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 0.0 a year in 2016–19 and 0.6 a year in 2020–24.
Nearby places
Questions fleets ask about Gregory
How many truck crashes happen in Gregory?
Since 2015, 34 crashes involving commercial trucks were reported in Tripp County (10 injured, 1 killed).
When do most truck crashes happen in Gregory?
October has the most truck crashes in Tripp County, 23.5% of the yearly total.
How many garbage truck accidents happen in Gregory?
Garbage trucks were involved in 1 reported crash in Tripp County since 2015 (2.9% of truck crashes).
What is the truck crash rate in Gregory compared with South Dakota?
Tripp County records 50.9 truck crashes per 100,000 residents a year, against 42.0 across South Dakota.
How can I plan a safer truck route in Gregory?
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.