Casper Mountain, WY truck route planning & crash data
Plan safer truck routes in Casper Mountain: commercial truck and garbage truck crashes in Casper Mountain and Natrona County, dangerous roads, seasonality and route safety data for fleets. Patterns use Natrona County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
6 of 481 truck crashes since 2015.
Deadliest roads
How Natrona County compares with Wyoming
Natrona County against Wyoming and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Natrona County stands out
Full comparison
| Measure (2015–2025) | Natrona County | Wyoming | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 51.4 | 187.2 | 49.7 | 73% below the state |
| Deaths per 100 crashes | 3.5 | 4.5 | 3.4 | 22% below the state |
| Injuries per crash | 0.36 | 0.43 | 0.49 | 16% below the state |
| Garbage-truck share | 1.3% | 0.4% | 2.3% | 3.3× the state |
| On snow, slush or ice | 28.3% | 45.1% | 6.2% | 37% below the state |
| Morning rush (6–10 am) | 20.9% | 23.4% | 23.7% | 11% below the state |
| In rain, sleet or snow | 16.7% | 25.0% | 13.8% | 33% below the state |
| Winter months (Nov–Mar) | 51.0% | 59.3% | 41.9% | 14% below the state |
| After dark | 24.6% | 32.8% | 24.8% | 25% below the state |
Compared with Wyoming, Natrona County is lower on crashes per 100k residents / yr, deaths per 100 crashes and injuries per crash. It runs above Wyoming on garbage-truck share.
What stands out in Natrona County: 1 in 76 of truck crashes here involve garbage trucks: 1.3%, vs 0.4% in Wyoming.
Overview
Police reported 481 crashes involving commercial trucks in Natrona County since 2015: 180 people were injured and 18 were killed.
That averages about one truck crash every 9 days in fully reported years.
With 0 truck crashes reported in Casper Mountain since 2015, this page uses Natrona County numbers for its patterns and comparisons.
When crashes happen
The worst month is November with 11.9% of truck crashes; the quietest is April at 5.2%.
Winter months (Nov–Mar) carry 51.0% of truck crashes, vs 59.3% for Wyoming.
The busiest hour is 10–11 am, with 8.3% of truck crashes.
Snow, slush or ice was on the road in 28.3% of truck crashes, compared with 45.1% in Wyoming.
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of Casper Mountain since 2015: SR-257 (2), Events Dr (1) and SR-220 (1). No single road stands out.
Garbage & waste trucks
Garbage trucks account for 6 of the truck crashes here, or 1.2%, compared with 0.4% in Wyoming.
Route planning tips for Casper Mountain fleets
- Plan November schedules with more margin; it is the worst month for truck crashes in Natrona County.
- 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 Natrona County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-257 | 2 |
| Events Dr | 1 |
| SR-220 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Natrona County) |
|---|---|
| Wy 257 & Robertson Rd | 7 |
| Wy 220 Mp 101 | 4 |
| Wy 220 Mp 60 | 4 |
| Wy 220 Mp 94 | 4 |
| I-25 Mp 188 | 3 |
| N Mckinley St | 3 |
| N Mckinley St Mp 100.39 | 3 |
| Us 20/Us 26 To I-25 | 3 |
Casper Mountain at a glance
| Land area | 35.9 sq mi |
| Median household income (ZIP 82609) | $71,010 |
| Median home value (ZIP 82609) | $293,568 |
Waste facilities and haulers nearby
Historical data: truck crashes in Natrona 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 | 20 | — | 1.5 |
| 2000s | 29 | +40% | 1.9 |
| 2010s | 41 | +42% | 0.9 |
| 2020s | 43 | +5% | 1.2 |
In the 1990s about 20 truck crashes a year were reported; in the 2020s, about 43. Reporting coverage also changed between these periods. NHTSA counts 0.5 fatal large-truck crashes a year in 2016–19 and 1.2 a year in 2020–24.
Nearby places
Questions fleets ask about Casper Mountain
How common are truck crashes in Casper Mountain?
481 truck crashes have been reported in Natrona County since 2015, with 18 deaths and 180 injuries.
When do most truck crashes happen in Casper Mountain?
The worst month is November: 11.9% of truck crashes in Natrona County happen then.
Are garbage truck crashes common in Casper Mountain?
Since 2015, Natrona County has reported 6 garbage-truck crashes, or 1.2% of its truck crashes.
How do truck crashes in Casper Mountain compare with Wyoming?
Natrona County records 51.4 truck crashes per 100,000 residents a year, against 187.2 across Wyoming.
What is the best way to plan truck routes in Casper Mountain?
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.