Simms, MT truck route planning & crash data
Plan safer truck routes in Simms: commercial truck and garbage truck crashes in Simms and Cascade County, dangerous roads, seasonality and route safety data for fleets. Patterns use Cascade County numbers.
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
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 |
Cascade County has lower values than Montana for crashes per 100k residents / yr, injuries per crash and on snow, slush or ice. It stands out for higher deaths per 100 crashes, garbage-truck share and morning rush (6–10 am).
Cascade County at a glance: 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.
In complete reporting years that works out to about one truck crash every 16 days.
With 0 truck crashes reported in Simms since 2015, this page uses Cascade County numbers for its patterns and comparisons.
87% of truck crash reports in Cascade County since 2015 leave the city field blank; place counts include only reports that name the place.
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.
The busiest hour is 9–10 am, 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
Roads with fatal crashes involving a large truck within 10 miles of Simms since 2015: US-89 (2) and SR-408 (1). No single road stands out.
Garbage & waste trucks
4 crashes involved a garbage or refuse truck, a 1.5% share (Montana: 0.9%).
Route planning tips for Simms fleets
- Review driver schedules for January, the month with the most truck crashes.
- Morning starts matter: 27.5% of truck crashes fall between 6 and 10 am, higher than Montana.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
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
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-89 | 2 |
| SR-408 | 1 |
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 |
Simms at a glance
| Land area | 7.6 sq mi |
| Median household income (ZIP 59477) | $42,292 |
| Median home value (ZIP 59477) | $238,440 |
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 |
In the 2000s about 21 truck crashes a year were reported; in the 2020s, about 20. Reporting coverage also changed between these periods. Fatal large-truck crashes: 1.0 a year in 2016–19, 2.0 a year in 2020–24.
Nearby places
Questions fleets ask about Simms
How many truck accidents are there in Simms?
Since 2015, 268 crashes involving commercial trucks were reported in Cascade County (74 injured, 15 killed).
Which month has the most truck crashes in Simms?
The worst month is January: 12.7% of truck crashes in Cascade County happen then.
How many garbage truck accidents happen in Simms?
Since 2015, Cascade County has reported 4 garbage-truck crashes, or 1.5% of its truck crashes.
How does Simms compare with Montana for truck crashes?
Per 100,000 residents, Cascade County has 27.7 truck crashes a year; Montana has 64.3.
How can I plan a safer truck route in Simms?
Paste your stops into the free CurbWaste Route Planner: it scores your route against fatal-crash locations, suggests safer alternatives and flags low bridges.
2026 is a partial year. Updated October 2026.