ZIP 57481 (Westport, SD) truck route planning & crash data
Plan safer truck routes around ZIP 57481: commercial truck and garbage truck crashes here and in Brown County, dangerous roads, seasonality and route safety data for fleets.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
5 of 115 truck crashes since 2015.
Deadliest roads
No fatal large-truck crashes with a road name recorded here since 2015.
How Brown County compares with South Dakota
Brown County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Brown County stands out
Full comparison
| Measure (2015–2025) | Brown County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 25.7 | 42.0 | 49.7 | 39% below the state |
| Deaths per 100 crashes | 5.7 | 5.2 | 3.4 | 1.1× the state |
| Injuries per crash | 0.13 | 0.13 | 0.49 | same |
| Garbage-truck share | 4.7% | 1.6% | 2.3% | 2.9× the state |
| On snow, slush or ice | 14.1% | 28.6% | 6.2% | 51% below the state |
| Morning rush (6–10 am) | 22.6% | 22.2% | 23.7% | same |
| In rain, sleet or snow | 9.4% | 17.5% | 13.8% | 46% below the state |
| Winter months (Nov–Mar) | 48.1% | 48.8% | 41.9% | same |
| After dark | 15.1% | 22.8% | 24.8% | 34% below the state |
Brown County has lower values than South Dakota for crashes per 100k residents / yr, on snow, slush or ice and in rain, sleet or snow. It runs above South Dakota on deaths per 100 crashes and garbage-truck share.
Brown County at a glance: 1 in 21 garbage-truck share of crashes is 4.7%, against 1.6% for South Dakota.
Overview
Since 2015, 115 crashes involving commercial trucks have been reported in Brown County. They injured 14 people and killed 6.
That averages about one truck crash every 38 days in fully reported years.
When crashes happen
October has the most truck crashes, 12.2% of the yearly total, while May has the fewest (4.3%).
Winter months (Nov–Mar) carry 48.1% of truck crashes, vs 48.8% for South Dakota.
By time of day, 4–5 pm stands out with 11.3% of truck crashes.
Snow, slush or ice was on the road in 14.1% of truck crashes, compared with 28.6% in South Dakota.
Where crashes happen
No fatal crash involving a large truck has a recorded location within 10 miles of ZIP 57481 since 2015.
Garbage & waste trucks
Garbage and refuse trucks were involved in 5 crashes, 4.3% of the total, against 1.6% across South Dakota.
Route planning tips for ZIP 57481 fleets
- Build extra time into October routes: it has the most truck crashes here.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 Brown 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 (Brown County) |
|---|---|
| US-12 | 46 |
| US-281 | 17 |
| Ave | 12 |
| Sd Hwy 37 | 10 |
| Sd Hwy 10 | 5 |
| 5Th St | 2 |
| 10Th Ave Sw Sw | 1 |
| 412Th Ave. | 1 |
ZIP 57481 at a glance
| Population | 271 |
| Density | 1 per sq mi |
| Median household income | $68,125 |
| Median home value | $194,240 |
| Home ownership | 95% |
Waste facilities and haulers nearby
Historical data: truck crashes in Brown 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 | 8 | — | 0.7 |
| 2000s | 9 | +11% | 0.5 |
| 2010s | 11 | +22% | 0.3 |
| 2020s | 10 | -16% | 0.8 |
From the 1990s to the 2020s, yearly reported truck crashes went from 8 to 10. Some of the change may reflect how crashes were reported. NHTSA counts 0.2 fatal large-truck crashes a year in 2016–19 and 0.8 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 57481
How many truck crashes happen in ZIP 57481?
Since 2015, 115 crashes involving commercial trucks were reported in Brown County (14 injured, 6 killed).
When do most truck crashes happen in ZIP 57481?
October has the most truck crashes in Brown County, 12.2% of the yearly total.
How many garbage truck crashes are there in ZIP 57481?
Garbage trucks were involved in 5 reported crashes in Brown County since 2015 (4.3% of truck crashes).
How does ZIP 57481 compare with South Dakota for truck crashes?
Brown County records 25.7 truck crashes per 100,000 residents a year, against 42.0 across South Dakota.
What is the best way to plan truck routes in ZIP 57481?
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.