ZIP 59336 (Ismay, MT) truck route planning & crash data
Plan safer truck routes around ZIP 59336: commercial truck and garbage truck crashes here and in Custer 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 118 truck crashes since 2015.
Deadliest roads
No fatal large-truck crashes with a road name recorded here since 2015.
How Custer County compares with Montana
Custer County against Montana and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Custer County stands out
Full comparison
| Measure (2015–2025) | Custer County | Montana | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 84.3 | 64.3 | 49.7 | 1.3× the state |
| Deaths per 100 crashes | 0.9 | 3.8 | 3.4 | 76% below the state |
| Injuries per crash | 0.30 | 0.34 | 0.49 | 12% below the state |
| Garbage-truck share | 0.0% | 0.9% | 2.3% | 100% below the state |
| On snow, slush or ice | 29.7% | 39.4% | 6.2% | 25% below the state |
| Morning rush (6–10 am) | 18.0% | 22.9% | 23.7% | 21% below the state |
| In rain, sleet or snow | 18.9% | 20.6% | 13.8% | 8% below the state |
| Winter months (Nov–Mar) | 51.3% | 54.3% | 41.9% | same |
| After dark | 29.7% | 30.8% | 24.8% | same |
Custer County sits below Montana on deaths per 100 crashes, injuries per crash and garbage-truck share. It runs above Montana on crashes per 100k residents / yr.
The headline for Custer County: 0 crashes involve a garbage truck (0 since 2015), vs 0.9% across Montana.
Overview
Custer County has recorded 118 truck crashes since 2015, with 34 people injured and 1 killed.
In complete reporting years that works out to about one truck crash every 36 days.
When crashes happen
The worst month is February with 13.6% of truck crashes; the quietest is September at 3.4%.
November through March accounts for 51.3% of truck crashes here, compared with 54.3% in Montana.
By time of day, 12–1 pm stands out with 9.3% of truck crashes.
29.7% of truck crashes here happened on snow, slush or ice, against 39.4% across Montana.
Where crashes happen
No fatal crash involving a large truck has a recorded location within 10 miles of ZIP 59336 since 2015.
Garbage & waste trucks
Since 2015, no garbage-truck crashes were reported for Custer County.
Route planning tips for ZIP 59336 fleets
- Plan February schedules with more margin; it is the worst month for truck crashes in Custer County.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 Custer 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 (Custer County) |
|---|---|
| I-94 Business Loop | 1 |
| Mm 130.3 I94 | 1 |
| Mm.6 Mt59 | 1 |
| Mm126.4 Exit Ramp I94Wb | 1 |
| Mm128 Eb I-94 | 1 |
| Mm128.0 I94W | 1 |
| Mm129.5 I-94 | 1 |
| Mm149.7 I94E | 1 |
ZIP 59336 at a glance
| Population | 220 |
| Density | 0 per sq mi |
| Median household income | $64,375 |
| Home ownership | 80% |
Waste facilities and haulers nearby
Historical data: truck crashes in Custer 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 | — | 0.0 |
| 2000s | 6 | +3620% | 0.1 |
| 2010s | 9 | +52% | 0.1 |
| 2020s | 10 | +12% | 0.2 |
From the 2000s to the 2020s, yearly reported truck crashes went from 6 to 10. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 0.0 a year in 2016–19 and 0.2 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 59336
How many truck accidents are there in ZIP 59336?
118 truck crashes have been reported in Custer County since 2015, with 1 deaths and 34 injuries.
When do most truck crashes happen in ZIP 59336?
Truck crashes in Custer County peak in February, with 13.6% of the year's crashes.
How many garbage truck accidents happen in ZIP 59336?
Since 2015, Custer County has reported 0 garbage-truck crashes, or 0.0% of its truck crashes.
How does ZIP 59336 compare with Montana for truck crashes?
Custer County records 84.3 truck crashes per 100,000 residents a year, against 64.3 across Montana.
What is the best way to plan truck routes in ZIP 59336?
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.