Granite County, MT truck route planning & crash data
Plan safer truck routes in Granite County: commercial truck and garbage truck crashes, 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
0 of 166 truck crashes since 2015.
Deadliest roads
How Granite County compares with Montana
Granite County against Montana and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Granite County stands out
Full comparison
| Measure (2015–2025) | Granite County | Montana | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 403.8 | 64.3 | 49.7 | 6.3× the state |
| Deaths per 100 crashes | 1.9 | 3.8 | 3.4 | 50% below the state |
| Injuries per crash | 0.36 | 0.34 | 0.49 | same |
| Garbage-truck share | 0.0% | 0.9% | 2.3% | 100% below the state |
| On snow, slush or ice | 63.1% | 39.4% | 6.2% | 1.6× the state |
| Morning rush (6–10 am) | 19.4% | 22.9% | 23.7% | 15% below the state |
| In rain, sleet or snow | 32.5% | 20.6% | 13.8% | 1.6× the state |
| Winter months (Nov–Mar) | 71.9% | 54.3% | 41.9% | 1.3× the state |
| After dark | 40.0% | 30.8% | 24.8% | 1.3× the state |
Compared with Montana, Granite County is lower on deaths per 100 crashes, garbage-truck share and morning rush (6–10 am). Where it is higher: crashes per 100k residents / yr, on snow, slush or ice and in rain, sleet or snow.
Granite County at a glance: 0 of truck crashes here involve garbage trucks: 0.0%, vs 0.9% in Montana.
Overview
Since 2015, 166 crashes involving commercial trucks have been reported in Granite County. They injured 59 people and killed 3.
In complete reporting years that works out to about one truck crash every 25 days.
When crashes happen
The worst month is January with 18.7% of truck crashes; the quietest is May at 1.2%.
Winter months (Nov–Mar) carry 71.9% of truck crashes, vs 54.3% for Montana.
The busiest hour is 10–11 am, with 10.2% of truck crashes.
63.1% 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 in Granite County since 2015: I-90 (1) and I-90W (1). No single road stands out.
Garbage & waste trucks
No crashes involving garbage or refuse trucks have been reported in Granite County since 2015.
Route planning tips for Granite County fleets
- Review driver schedules for January, the month with the most truck crashes.
- With 63.1% of truck crashes on snow, slush or ice (above Montana), plan winter equipment checks early.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
About the data
Sources: the FMCSA crash file for all reported truck crashes and NHTSA FARS for fatal crashes with a large truck. Every statement here comes straight from those numbers.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Granite County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (in Granite County) |
|---|---|
| I-90 | 1 |
| I-90W | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Granite County) |
|---|---|
| Mm 148.6 I-90 | 2 |
| Mm149.6, I90W | 2 |
| Mm 149.3 I90 | 1 |
| Mm 150.3 I90 | 1 |
| Mm 34.5 Mt-1 | 1 |
| Mm135.0, I-90W | 1 |
| Mm148.4 I90E | 1 |
Granite County at a glance
| Population | 3,602 |
| Land area | 1,727.2 sq mi |
| Density | 2 per sq mi |
| Median household income (ZIP average) | $72,079 |
Waste facilities and haulers nearby
Historical data: truck crashes in Granite 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 | — | — | 0.5 |
| 2000s | 6 | — | 0.4 |
| 2010s | 10 | +62% | 0.2 |
| 2020s | 15 | +41% | 0.0 |
From the 2000s to the 2020s, yearly reported truck crashes went from 6 to 15. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 0.5 a year in 2016–19 and 0.0 a year in 2020–24.
Cities, towns & communities in Granite County
ZIP codes in Granite County
Nearby counties
Questions fleets ask about Granite County
How many truck crashes happen in Granite County?
Since 2015, 166 crashes involving commercial trucks were reported in Granite County (59 injured, 3 killed).
What is the worst month for truck crashes in Granite County?
January has the most truck crashes in Granite County, 18.7% of the yearly total.
How many garbage truck accidents happen in Granite County?
Since 2015, Granite County has reported 0 garbage-truck crashes, or 0.0% of its truck crashes.
How do truck crashes in Granite County compare with Montana?
The yearly rate is 403.8 truck crashes per 100,000 residents in Granite County, vs 64.3 for Montana.
What is the best way to plan truck routes in Granite County?
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.