Keystone, SD truck route planning & crash data
Plan safer truck routes in Keystone: commercial truck and garbage truck crashes in Keystone and Pennington County, dangerous roads, seasonality and route safety data for fleets. Patterns use Pennington County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
10 of 399 truck crashes since 2015.
Deadliest roads
How Pennington County compares with South Dakota
Pennington County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Pennington County stands out
Full comparison
| Measure (2015–2025) | Pennington County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 29.1 | 42.0 | 49.7 | 31% below the state |
| Deaths per 100 crashes | 3.0 | 5.2 | 3.4 | 42% below the state |
| Injuries per crash | 0.10 | 0.13 | 0.49 | 23% below the state |
| Garbage-truck share | 2.4% | 1.6% | 2.3% | 1.5× the state |
| On snow, slush or ice | 28.8% | 28.6% | 6.2% | same |
| Morning rush (6–10 am) | 21.0% | 22.2% | 23.7% | same |
| In rain, sleet or snow | 20.0% | 17.5% | 13.8% | 1.1× the state |
| Winter months (Nov–Mar) | 48.2% | 48.8% | 41.9% | same |
| After dark | 27.2% | 22.8% | 24.8% | 1.2× the state |
Compared with South Dakota, Pennington County is lower on crashes per 100k residents / yr, deaths per 100 crashes and injuries per crash. It stands out for higher garbage-truck share, in rain, sleet or snow and after dark.
Pennington County at a glance: 1 in 41 of truck crashes here involve garbage trucks: 2.4%, vs 1.6% in South Dakota.
Overview
Pennington County has recorded 399 truck crashes since 2015, with 38 people injured and 11 killed.
In complete reporting years that works out to about one truck crash every 11 days.
Keystone had 1 reported truck crash since 2015, too few for reliable patterns, so the charts and findings on this page use Pennington County numbers.
When crashes happen
The worst month is January with 11.8% of truck crashes; the quietest is February at 5.3%.
Winter months (Nov–Mar) carry 48.2% of truck crashes, vs 48.8% for South Dakota.
The busiest hour is 2–3 pm, with 8.8% of truck crashes.
Snow, slush or ice was on the road in 28.8% of truck crashes, compared with 28.6% in South Dakota.
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of Keystone since 2015: US-16 (1). No single road stands out.
Garbage & waste trucks
Garbage and refuse trucks were involved in 10 crashes, 2.5% of the total, against 1.6% across South Dakota.
Route planning tips for Keystone fleets
- Review driver schedules for January, 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
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 Pennington County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-16 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Pennington County) |
|---|---|
| I-90 | 194 |
| US-16 | 39 |
| Sd Hwy 44 | 26 |
| Sd Hwy 79 | 16 |
| Ave | 7 |
| Sd Hwy 445 | 7 |
| Us Hwy 16 B | 5 |
| Cambell St | 4 |
Keystone at a glance
| Population | 261 |
| Land area | 3.0 sq mi |
| Density | 87 per sq mi |
| Median household income (ZIP 57751) | $97,969 |
| Median home value (ZIP 57751) | $496,748 |
Waste facilities and haulers nearby
Historical data: truck crashes in Pennington 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 | 23 | — | 0.7 |
| 2000s | 24 | +2% | 1.0 |
| 2010s | 25 | +5% | 0.5 |
| 2020s | 42 | +67% | 1.0 |
Reported truck crashes averaged 23 a year in the 1990s and 42 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. NHTSA counts 1.0 fatal large-truck crashes a year in 2016–19 and 1.0 a year in 2020–24.
Nearby places
Questions fleets ask about Keystone
How many truck accidents are there in Keystone?
Pennington County has had 399 reported truck crashes since 2015, injuring 38 people and killing 11.
What is the worst month for truck crashes in Keystone?
The worst month is January: 11.8% of truck crashes in Pennington County happen then.
Are garbage truck crashes common in Keystone?
10 crashes involving garbage or refuse trucks have been reported in Pennington County since 2015, 2.5% of all truck crashes.
How do truck crashes in Keystone compare with South Dakota?
Per 100,000 residents, Pennington County has 29.1 truck crashes a year; South Dakota has 42.0.
What is the best way to plan truck routes in Keystone?
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.