Sioux Valley, SD truck route planning & crash data
Plan safer truck routes in Sioux Valley: commercial truck and garbage truck crashes in Sioux Valley and Union County, dangerous roads, seasonality and route safety data for fleets. Patterns use Union County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
1 of 188 truck crashes since 2015.
Deadliest roads
How Union County compares with South Dakota
Union County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Union County stands out
Full comparison
| Measure (2015–2025) | Union County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 90.4 | 42.0 | 49.7 | 2.2× the state |
| Deaths per 100 crashes | 4.6 | 5.2 | 3.4 | 12% below the state |
| Injuries per crash | 0.09 | 0.13 | 0.49 | 31% below the state |
| Garbage-truck share | 0.6% | 1.6% | 2.3% | 64% below the state |
| On snow, slush or ice | 37.6% | 28.6% | 6.2% | 1.3× the state |
| Morning rush (6–10 am) | 23.7% | 22.2% | 23.7% | same |
| In rain, sleet or snow | 27.2% | 17.5% | 13.8% | 1.5× the state |
| Winter months (Nov–Mar) | 56.1% | 48.8% | 41.9% | 1.1× the state |
| After dark | 28.3% | 22.8% | 24.8% | 1.2× the state |
Union County has lower values than South Dakota for deaths per 100 crashes, injuries per crash and garbage-truck share. It stands out for higher crashes per 100k residents / yr, on snow, slush or ice and in rain, sleet or snow.
Union County at a glance: December the month with the most truck crashes: 16.0% of the year's total.
Overview
Union County has recorded 188 truck crashes since 2015, with 17 people injured and 8 killed.
That averages about one truck crash every 23 days in fully reported years.
Sioux Valley had 0 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Union County numbers.
When crashes happen
The worst month is December with 16.0% of truck crashes; the quietest is October at 2.7%.
November through March accounts for 56.1% of truck crashes here, compared with 48.8% in South Dakota.
By time of day, 1–2 pm stands out with 10.1% of truck crashes.
Snow, slush or ice was on the road in 37.6% 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 Sioux Valley since 2015: SR-11 (1). No single road stands out.
Garbage & waste trucks
Garbage and refuse trucks were involved in 1 crash, 0.5% of the total, against 1.6% across South Dakota.
Route planning tips for Sioux Valley fleets
- Plan December schedules with more margin; it is the worst month for truck crashes in Union County.
- Icy and snowy roads show up in 37.6% of truck crashes here, more than South Dakota; schedule winter checks early.
- 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 Union County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-11 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Union County) |
|---|---|
| I-29 | 139 |
| Sd Hwy 50 | 10 |
| Sd Hwy 46 | 8 |
| Ave | 6 |
| N Derby Ln | 4 |
| Sd Hwy 48 | 3 |
| River Dr | 2 |
| First St | 1 |
Sioux Valley at a glance
| Population | 245 |
| Land area | 42.1 sq mi |
| Density | 6 per sq mi |
| Median household income (ZIP 57001) | $69,531 |
| Median home value (ZIP 57001) | $179,796 |
Waste facilities and haulers nearby
Historical data: truck crashes in Union 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 | 11 | — | 0.4 |
| 2000s | 10 | -4% | 0.2 |
| 2010s | 13 | +28% | 0.3 |
| 2020s | 18 | +36% | 0.8 |
In the 1990s about 11 truck crashes a year were reported; in the 2020s, about 18. Reporting coverage also changed between these periods. NHTSA counts 0.2 fatal large-truck crashes a year in 2016–19 and 0.8 a year in 2020–24.
Nearby places
Questions fleets ask about Sioux Valley
How many truck accidents are there in Sioux Valley?
Since 2015, 188 crashes involving commercial trucks were reported in Union County (17 injured, 8 killed).
What is the worst month for truck crashes in Sioux Valley?
The worst month is December: 16.0% of truck crashes in Union County happen then.
Are garbage truck crashes common in Sioux Valley?
1 crash involving garbage or refuse trucks have been reported in Union County since 2015, 0.5% of all truck crashes.
What is the truck crash rate in Sioux Valley compared with South Dakota?
Per 100,000 residents, Union County has 90.4 truck crashes a year; South Dakota has 42.0.
How do I plan a garbage truck route in Sioux Valley?
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.