Big Sky, MT truck route planning & crash data
Plan safer truck routes in Big Sky: commercial truck and garbage truck crashes in Big Sky 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
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 |
Madison County sits below Montana on injuries per crash, garbage-truck share and on snow, slush or ice. It stands out for higher crashes per 100k residents / yr, deaths per 100 crashes and after dark.
The headline for Madison County: February 14.5% of truck crashes happen in February, more than any other month.
Overview
Madison County has recorded 145 truck crashes since 2015, with 44 people injured and 6 killed.
In complete reporting years that works out to about one truck crash every 30 days.
Only 0 truck crashes were reported in Big Sky since 2015; patterns below come from Madison County as a whole.
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
February has the most truck crashes, 14.5% of the yearly total, while September has the fewest (2.8%).
Winter months (Nov–Mar) carry 51.8% of truck crashes, vs 54.3% for Montana.
More truck crashes happen at 11 am–12 pm than at any other hour (11.7%).
32.6% of truck crashes here happened on snow, slush or ice, against 39.4% across Montana.
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of Big Sky since 2015: SR-64 (1) and US-191 (1). No single road stands out.
Garbage & waste trucks
Garbage and refuse trucks were involved in 2 crashes, 1.4% of the total, against 0.9% across Montana.
Route planning tips for Big Sky fleets
- Build extra time into February routes: it has the most truck crashes here.
- 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 Madison County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-64 | 1 |
| US-191 | 1 |
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 |
Big Sky at a glance
| Land area | 120.0 sq mi |
| Median household income (ZIP 59716) | $141,716 |
| Median home value (ZIP 59716) | $1,044,021 |
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 |
Reported truck crashes averaged 8 a year in the 2000s and 14 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal crashes involving a large truck averaged 0.5 a year in 2016–19 and 0.8 a year in 2020–24.
Nearby places
Questions fleets ask about Big Sky
How many truck accidents are there in Big Sky?
Since 2015, 145 crashes involving commercial trucks were reported in Madison County (44 injured, 6 killed).
When do most truck crashes happen in Big Sky?
Truck crashes in Madison County peak in February, with 14.5% of the year's crashes.
How many garbage truck accidents happen in Big Sky?
Garbage trucks were involved in 2 reported crashes in Madison County since 2015 (1.4% of truck crashes).
What is the truck crash rate in Big Sky compared with Montana?
The yearly rate is 125.8 truck crashes per 100,000 residents in Madison County, vs 64.3 for Montana.
What is the best way to plan truck routes in Big Sky?
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.