Big Arm, MT truck route planning & crash data
Plan safer truck routes in Big Arm: commercial truck and garbage truck crashes in Big Arm and Lake County, dangerous roads, seasonality and route safety data for fleets. Patterns use Lake County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
2 of 138 truck crashes since 2015.
Deadliest roads
No fatal large-truck crashes with a road name recorded here since 2015.
How Lake County compares with Montana
Lake County against Montana and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Lake County stands out
Full comparison
| Measure (2015–2025) | Lake County | Montana | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 34.3 | 64.3 | 49.7 | 47% below the state |
| Deaths per 100 crashes | 7.1 | 3.8 | 3.4 | 1.9× the state |
| Injuries per crash | 0.50 | 0.34 | 0.49 | 1.5× the state |
| Garbage-truck share | 1.6% | 0.9% | 2.3% | 1.7× the state |
| On snow, slush or ice | 19.8% | 39.4% | 6.2% | 50% below the state |
| Morning rush (6–10 am) | 24.6% | 22.9% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 16.7% | 20.6% | 13.8% | 19% below the state |
| Winter months (Nov–Mar) | 46.0% | 54.3% | 41.9% | 15% below the state |
| After dark | 24.6% | 30.8% | 24.8% | 20% below the state |
Lake County has lower values than Montana for crashes per 100k residents / yr, on snow, slush or ice and in rain, sleet or snow. It runs above Montana on deaths per 100 crashes, injuries per crash and garbage-truck share.
The headline for Lake County: 1 in 63 of truck crashes here involve garbage trucks: 1.6%, vs 0.9% in Montana.
Overview
Lake County has recorded 138 truck crashes since 2015, with 68 people injured and 10 killed.
That averages about one truck crash every 32 days in fully reported years.
With 0 truck crashes reported in Big Arm since 2015, this page uses Lake County numbers for its patterns and comparisons.
85% of truck crash reports in Lake County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
The worst month is December with 14.5% of truck crashes; the quietest is March at 4.3%.
November through March accounts for 46.0% of truck crashes here, compared with 54.3% in Montana.
By time of day, 11 am–12 pm stands out with 11.6% of truck crashes.
Snow, slush or ice was on the road in 19.8% of truck crashes, compared with 39.4% in Montana.
Where crashes happen
No fatal crash involving a large truck has a recorded location within 10 miles of Big Arm since 2015.
Garbage & waste trucks
2 crashes involved a garbage or refuse truck, a 1.4% share (Montana: 0.9%).
Route planning tips for Big Arm fleets
- Build extra time into December routes: it has the most truck crashes here.
- Morning starts matter: 24.6% 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 Lake 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 (Lake County) |
|---|---|
| US-93 | 3 |
| Mm 23.8 Us Highway 93 | 1 |
| Mm 48.2 Highway 93 | 1 |
| Mm 50.5 Us Hwy 93 | 1 |
| Mm48. 4 Hwy93 | 1 |
| Mm65.3 Hwy93 | 1 |
| Mm65.4 Us93 | 1 |
| Mm73.9 Us93 | 1 |
Big Arm at a glance
| Land area | 5.4 sq mi |
| Median household income (ZIP 59910) | $99,886 |
Waste facilities and haulers nearby
Historical data: truck crashes in Lake 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 | — | — | 1.7 |
| 2000s | 14 | — | 1.5 |
| 2010s | 10 | -33% | 0.5 |
| 2020s | 10 | +9% | 1.0 |
In the 2000s about 14 truck crashes a year were reported; in the 2020s, about 10. Reporting coverage also changed between these periods. Fatal large-truck crashes: 0.5 a year in 2016–19, 1.0 a year in 2020–24.
Nearby places
Questions fleets ask about Big Arm
How many truck crashes happen in Big Arm?
138 truck crashes have been reported in Lake County since 2015, with 10 deaths and 68 injuries.
What is the worst month for truck crashes in Big Arm?
December has the most truck crashes in Lake County, 14.5% of the yearly total.
How many garbage truck crashes are there in Big Arm?
Since 2015, Lake County has reported 2 garbage-truck crashes, or 1.4% of its truck crashes.
What is the truck crash rate in Big Arm compared with Montana?
Lake County records 34.3 truck crashes per 100,000 residents a year, against 64.3 across Montana.
What is the best way to plan truck routes in Big Arm?
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.