Mammoth, MT truck route planning & crash data
Plan safer truck routes in Mammoth: commercial truck and garbage truck crashes in Mammoth and Madison County, dangerous roads, seasonality and route safety data for fleets. Patterns use Madison County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
2 of 145 truck crashes since 2015.
Deadliest roads
No fatal large-truck crashes with a road name recorded here since 2015.
How Madison County compares with Montana
Madison County against Montana and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Madison County stands out
Full comparison
| Measure (2015–2025) | Madison County | Montana | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 125.8 | 64.3 | 49.7 | 2.0× the state |
| Deaths per 100 crashes | 4.4 | 3.8 | 3.4 | 1.2× the state |
| Injuries per crash | 0.31 | 0.34 | 0.49 | 9% below the state |
| Garbage-truck share | 0.7% | 0.9% | 2.3% | 20% below the state |
| On snow, slush or ice | 32.6% | 39.4% | 6.2% | 17% below the state |
| Morning rush (6–10 am) | 17.8% | 22.9% | 23.7% | 22% below the state |
| In rain, sleet or snow | 15.6% | 20.6% | 13.8% | 24% below the state |
| Winter months (Nov–Mar) | 51.8% | 54.3% | 41.9% | same |
| After dark | 35.6% | 30.8% | 24.8% | 1.2× the state |
Compared with Montana, Madison County is lower on injuries per crash, garbage-truck share and on snow, slush or ice. It runs above Montana on crashes per 100k residents / yr, deaths per 100 crashes and after dark.
Madison County at a glance: February 14.5% of truck crashes happen in February, more than any other month.
Overview
Police reported 145 crashes involving commercial trucks in Madison County since 2015: 44 people were injured and 6 were killed.
That averages about one truck crash every 30 days in fully reported years.
Mammoth had 0 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Madison County numbers.
92% of truck crash reports in Madison County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
The worst month is February with 14.5% of truck crashes; the quietest is September at 2.8%.
The five winter months (November to March) hold 51.8% of truck crashes, against 54.3% across Montana.
The busiest hour is 11 am–12 pm, with 11.7% of truck crashes.
32.6% 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 Mammoth since 2015.
Garbage & waste trucks
Garbage trucks account for 2 of the truck crashes here, or 1.4%, compared with 0.9% in Montana.
Route planning tips for Mammoth fleets
- Review driver schedules for February, the month with the most truck crashes.
- 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 Madison 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 (Madison County) |
|---|---|
| 4Th Ave | 1 |
| Mm11.4 Us287S | 1 |
| Mm21.1 Mt41 | 1 |
| Mm22.5 Mt41 | 1 |
| Mm23.6 Us287N | 1 |
| Mm3.9 Mt84E (Norris Rd) | 1 |
| Mm4 Mt Hwy 84 | 1 |
| Mm4.8 Mt84 | 1 |
Mammoth at a glance
| Land area | 0.3 sq mi |
| Median household income (ZIP 59747) | $80,250 |
| Median home value (ZIP 59747) | $422,746 |
Waste facilities and haulers nearby
Historical data: truck crashes in Madison 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 | — | — | 0.4 |
| 2000s | 8 | — | 0.3 |
| 2010s | 10 | +26% | 0.7 |
| 2020s | 14 | +39% | 0.8 |
From the 2000s to the 2020s, yearly reported truck crashes went from 8 to 14. Some of the change may reflect how crashes were reported. NHTSA counts 0.5 fatal large-truck crashes a year in 2016–19 and 0.8 a year in 2020–24.
Nearby places
Questions fleets ask about Mammoth
How common are truck crashes in Mammoth?
Madison County has had 145 reported truck crashes since 2015, injuring 44 people and killing 6.
When do most truck crashes happen in Mammoth?
The worst month is February: 14.5% of truck crashes in Madison County happen then.
How many garbage truck accidents happen in Mammoth?
Since 2015, Madison County has reported 2 garbage-truck crashes, or 1.4% of its truck crashes.
How does Mammoth compare with Montana for truck crashes?
Per 100,000 residents, Madison County has 125.8 truck crashes a year; Montana has 64.3.
How do I plan a garbage truck route in Mammoth?
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.