Ismay, MT truck route planning & crash data
Plan safer truck routes in Ismay: commercial truck and garbage truck crashes in Ismay and Custer County, dangerous roads, seasonality and route safety data for fleets. Patterns use Custer County numbers.
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 has lower values than Montana for deaths per 100 crashes, injuries per crash and garbage-truck share. It stands out for higher crashes per 100k residents / yr.
Custer County at a glance: 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.
Ismay had 0 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Custer County numbers.
91% of truck crash reports in Custer County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
February has the most truck crashes, 13.6% of the yearly total, while September has the fewest (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.
Road surface: 29.7% of truck crashes were on snow, slush or ice (Montana: 39.4%).
Where crashes happen
No fatal crash involving a large truck has a recorded location within 10 miles of Ismay since 2015.
Garbage & waste trucks
FMCSA lists no garbage-truck crashes in Custer County since 2015.
Route planning tips for Ismay fleets
- Build extra time into February routes: it has the most truck crashes here.
- 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 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 |
Ismay at a glance
| Population | 21 |
| Land area | 0.4 sq mi |
| Density | 50 per sq mi |
| Median household income (ZIP 59336) | $64,375 |
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. NHTSA counts 0.0 fatal large-truck crashes a year in 2016–19 and 0.2 a year in 2020–24.
Nearby places
Questions fleets ask about Ismay
How common are truck crashes in Ismay?
118 truck crashes have been reported in Custer County since 2015, with 1 deaths and 34 injuries.
Which month has the most truck crashes in Ismay?
Truck crashes in Custer County peak in February, with 13.6% of the year's crashes.
How many garbage truck accidents happen in Ismay?
0 crashes involving garbage or refuse trucks have been reported in Custer County since 2015, 0.0% of all truck crashes.
How do truck crashes in Ismay compare with Montana?
The yearly rate is 84.3 truck crashes per 100,000 residents in Custer County, vs 64.3 for Montana.
What is the best way to plan truck routes in Ismay?
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.