ZIP 59477 (Simms, MT) truck route planning & crash data
Plan safer truck routes around ZIP 59477: commercial truck and garbage truck crashes here and in Cascade 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
4 of 268 truck crashes since 2015.
Deadliest roads
No fatal large-truck crashes with a road name recorded here since 2015.
How Cascade County compares with Montana
Cascade County against Montana and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Cascade County stands out
Full comparison
| Measure (2015–2025) | Cascade County | Montana | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 27.7 | 64.3 | 49.7 | 57% below the state |
| Deaths per 100 crashes | 5.8 | 3.8 | 3.4 | 1.5× the state |
| Injuries per crash | 0.28 | 0.34 | 0.49 | 18% below the state |
| Garbage-truck share | 1.6% | 0.9% | 2.3% | 1.7× the state |
| On snow, slush or ice | 36.0% | 39.4% | 6.2% | 8% below the state |
| Morning rush (6–10 am) | 27.5% | 22.9% | 23.7% | 1.2× the state |
| In rain, sleet or snow | 21.3% | 20.6% | 13.8% | same |
| Winter months (Nov–Mar) | 55.0% | 54.3% | 41.9% | same |
| After dark | 28.3% | 30.8% | 24.8% | 8% below the state |
Compared with Montana, Cascade County is lower on crashes per 100k residents / yr, injuries per crash and on snow, slush or ice. Where it is higher: deaths per 100 crashes, garbage-truck share and morning rush (6–10 am).
What stands out in Cascade County: 1 in 65 crashes involve a garbage truck (4 since 2015), vs 0.9% across Montana.
Overview
Cascade County has recorded 268 truck crashes since 2015, with 74 people injured and 15 killed.
Across the years with complete reporting, that is roughly one truck crash every 16 days.
When crashes happen
January has the most truck crashes, 12.7% of the yearly total, while April has the fewest (4.1%).
The five winter months (November to March) hold 55.0% of truck crashes, against 54.3% across Montana.
By time of day, 9–10 am stands out with 10.1% of truck crashes.
36.0% of truck crashes here happened on snow, slush or ice, against 39.4% across Montana.
Where crashes happen
Since 2015, no fatal large-truck crashes with a location were recorded within 10 miles of ZIP 59477.
Garbage & waste trucks
Garbage and refuse trucks were involved in 4 crashes, 1.5% of the total, against 0.9% across Montana.
Route planning tips for ZIP 59477 fleets
- Build extra time into January routes: it has the most truck crashes here.
- 27.5% of truck crashes happen between 6 and 10 am, above Montana; consider earlier or later starts where possible.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
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 Cascade 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 (Cascade County) |
|---|---|
| Mm 1.9 Us Highway 87E | 2 |
| 23Rd St S & 10Th Ave | 1 |
| 87.5 Eb Us Hwy 87/89E | 1 |
| I-15 Nb Mp 278 | 1 |
| I-15 Sb Mp 254 | 1 |
| Lower River Rd | 1 |
| Mm 5.4 Us Highway 89/Montana 200 | 1 |
| Mm 59.6 Us 89S | 1 |
ZIP 59477 at a glance
| Population | 334 |
| Density | 2 per sq mi |
| Median household income | $42,292 |
| Median home value | $238,440 |
| Home ownership | 78% |
Waste facilities and haulers nearby
Historical data: truck crashes in Cascade 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 | — | — | 0.6 |
| 2000s | 21 | — | 0.4 |
| 2010s | 25 | +19% | 0.7 |
| 2020s | 20 | -19% | 2.0 |
From the 2000s to the 2020s, yearly reported truck crashes went from 21 to 20. Some of the change may reflect how crashes were reported. NHTSA counts 1.0 fatal large-truck crashes a year in 2016–19 and 2.0 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 59477
How many truck accidents are there in ZIP 59477?
Cascade County has had 268 reported truck crashes since 2015, injuring 74 people and killing 15.
What is the worst month for truck crashes in ZIP 59477?
The worst month is January: 12.7% of truck crashes in Cascade County happen then.
Are garbage truck crashes common in ZIP 59477?
Since 2015, Cascade County has reported 4 garbage-truck crashes, or 1.5% of its truck crashes.
What is the truck crash rate in ZIP 59477 compared with Montana?
Cascade County records 27.7 truck crashes per 100,000 residents a year, against 64.3 across Montana.
How do I plan a garbage truck route in ZIP 59477?
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.