ZIP 59033 (Greycliff, MT) truck route planning & crash data
Plan safer truck routes around ZIP 59033: commercial truck and garbage truck crashes here and in Sweet Grass 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
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. Where it is higher: crashes per 100k residents / yr, on snow, slush or ice and morning rush (6–10 am).
The headline for Sweet Grass County: 0 garbage-truck share of crashes is 0.0%, against 0.9% for Montana.
Overview
Since 2015, 291 crashes involving commercial trucks have been reported in Sweet Grass County. They injured 71 people and killed 2.
That averages about one truck crash every 14 days in fully reported years.
When crashes happen
Truck crashes peak in December (15.5% of the year) and are lowest in August (2.1%).
Winter months (Nov–Mar) carry 66.7% of truck crashes, vs 54.3% for Montana.
By time of day, 8–9 am stands out with 10.0% of truck crashes.
64.9% 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 59033.
Garbage & waste trucks
Since 2015, no garbage-truck crashes were reported for Sweet Grass County.
Route planning tips for ZIP 59033 fleets
- Review driver schedules for December, the month with the most truck crashes.
- The morning rush (6–10 am) holds 29.0% of truck crashes here, more than Montana; adjust start times where you can.
- 64.9% of truck crashes were on snow, slush or ice, above Montana; plan winter equipment checks before the season.
- 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 |
ZIP 59033 at a glance
| Population | 231 |
| Density | 2 per sq mi |
| Median household income | $71,635 |
| Home ownership | 100% |
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 |
Reported truck crashes averaged 11 a year in the 2000s and 28 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting.
Nearby ZIP codes
Questions fleets ask about ZIP 59033
How common are truck crashes in ZIP 59033?
Since 2015, 291 crashes involving commercial trucks were reported in Sweet Grass County (71 injured, 2 killed).
When do most truck crashes happen in ZIP 59033?
December has the most truck crashes in Sweet Grass County, 15.5% of the yearly total.
Are garbage truck crashes common in ZIP 59033?
0 crashes involving garbage or refuse trucks have been reported in Sweet Grass County since 2015, 0.0% of all truck crashes.
What is the truck crash rate in ZIP 59033 compared with Montana?
Sweet Grass County records 675.1 truck crashes per 100,000 residents a year, against 64.3 across Montana.
What is the best way to plan truck routes in ZIP 59033?
Use the free Route Planner: enter your stops to get a risk score, safer alternatives and the low bridges on your route.
2026 is a partial year. Updated October 2026.