Greycliff, MT truck route planning & crash data
Plan safer truck routes in Greycliff: commercial truck and garbage truck crashes in Greycliff and Sweet Grass County, dangerous roads, seasonality and route safety data for fleets. Patterns use Sweet Grass County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
0 of 291 truck crashes since 2015.
Deadliest roads
No fatal large-truck crashes with a road name recorded here since 2015.
How Sweet Grass County compares with Montana
Sweet Grass County against Montana and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Sweet Grass County stands out
Full comparison
| Measure (2015–2025) | Sweet Grass County | Montana | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 675.1 | 64.3 | 49.7 | 10.5× the state |
| Deaths per 100 crashes | 0.7 | 3.8 | 3.4 | 82% below the state |
| Injuries per crash | 0.24 | 0.34 | 0.49 | 29% below the state |
| Garbage-truck share | 0.0% | 0.9% | 2.3% | 100% below the state |
| On snow, slush or ice | 64.9% | 39.4% | 6.2% | 1.6× the state |
| Morning rush (6–10 am) | 29.0% | 22.9% | 23.7% | 1.3× the state |
| In rain, sleet or snow | 26.5% | 20.6% | 13.8% | 1.3× the state |
| Winter months (Nov–Mar) | 66.7% | 54.3% | 41.9% | 1.2× the state |
| After dark | 32.6% | 30.8% | 24.8% | same |
Sweet Grass County has lower values than Montana for deaths per 100 crashes, injuries per crash and garbage-truck share. It runs above Montana on crashes per 100k residents / yr, on snow, slush or ice and morning rush (6–10 am).
What stands out in Sweet Grass County: 0 garbage-truck share of crashes is 0.0%, against 0.9% for Montana.
Overview
Police reported 291 crashes involving commercial trucks in Sweet Grass County since 2015: 71 people were injured and 2 were killed.
That averages about one truck crash every 14 days in fully reported years.
Greycliff had 0 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Sweet Grass County numbers.
92% of truck crash reports in Sweet Grass 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 15.5% of truck crashes; the quietest is August at 2.1%.
Winter months (Nov–Mar) carry 66.7% of truck crashes, vs 54.3% for Montana.
The busiest hour is 8–9 am, with 10.0% of truck crashes.
Snow, slush or ice was on the road in 64.9% of truck crashes, compared with 39.4% in Montana.
Where crashes happen
NHTSA lists no located fatal large-truck crashes within 10 miles of Greycliff since 2015.
Garbage & waste trucks
No crashes involving garbage or refuse trucks have been reported in Sweet Grass County since 2015.
Route planning tips for Greycliff fleets
- Plan December schedules with more margin; it is the worst month for truck crashes in Sweet Grass County.
- The morning rush (6–10 am) holds 29.0% of truck crashes here, more than Montana; adjust start times where you can.
- Icy and snowy roads show up in 64.9% of truck crashes here, more than Montana; schedule winter checks early.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
About the data
This report uses the FMCSA crash file (reported crashes of trucks over 10,000 lb) and NHTSA FARS (fatal crashes). It reports the numbers without guessing at reasons.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Sweet Grass 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 (Sweet Grass County) |
|---|---|
| Mm368.8 Interstate 90 | 2 |
| Mm378.1 I90W | 2 |
| Mm 16.9 - Us Highway 191 | 1 |
| Mm 365.6 I90 | 1 |
| Mm 376.1 -I90 | 1 |
| Mm24.5 Us 191 | 1 |
| Mm27.5 Us 191 | 1 |
| Mm368.5 I90E | 1 |
Greycliff at a glance
| Land area | 0.5 sq mi |
| Median household income (ZIP 59033) | $71,635 |
Waste facilities and haulers nearby
Historical data: truck crashes in Sweet Grass 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 | — | — | 0.1 |
| 2000s | 11 | — | 0.5 |
| 2010s | 17 | +46% | 0.1 |
| 2020s | 28 | +68% | 0.0 |
From the 2000s to the 2020s, yearly reported truck crashes went from 11 to 28. Some of the change may reflect how crashes were reported.
Nearby places
Questions fleets ask about Greycliff
How common are truck crashes in Greycliff?
Since 2015, 291 crashes involving commercial trucks were reported in Sweet Grass County (71 injured, 2 killed).
What is the worst month for truck crashes in Greycliff?
The worst month is December: 15.5% of truck crashes in Sweet Grass County happen then.
Are garbage truck crashes common in Greycliff?
0 crashes involving garbage or refuse trucks have been reported in Sweet Grass County since 2015, 0.0% of all truck crashes.
How do truck crashes in Greycliff compare with Montana?
Per 100,000 residents, Sweet Grass County has 675.1 truck crashes a year; Montana has 64.3.
How can I plan a safer truck route in Greycliff?
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.