Clancy, MT truck route planning & crash data
Plan safer truck routes in Clancy: commercial truck and garbage truck crashes in Clancy and Jefferson County, dangerous roads, seasonality and route safety data for fleets. Patterns use Jefferson County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
1 of 382 truck crashes since 2015.
Deadliest roads
How Jefferson County compares with Montana
Jefferson County against Montana and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Jefferson County stands out
Full comparison
| Measure (2015–2025) | Jefferson County | Montana | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 241.9 | 64.3 | 49.7 | 3.8× the state |
| Deaths per 100 crashes | 4.8 | 3.8 | 3.4 | 1.3× the state |
| Injuries per crash | 0.29 | 0.34 | 0.49 | 15% below the state |
| Garbage-truck share | 0.3% | 0.9% | 2.3% | 70% below the state |
| On snow, slush or ice | 39.3% | 39.4% | 6.2% | same |
| Morning rush (6–10 am) | 19.2% | 22.9% | 23.7% | 16% below the state |
| In rain, sleet or snow | 15.0% | 20.6% | 13.8% | 27% below the state |
| Winter months (Nov–Mar) | 52.8% | 54.3% | 41.9% | same |
| After dark | 32.5% | 30.8% | 24.8% | same |
Jefferson County sits below Montana on injuries per crash, garbage-truck share and morning rush (6–10 am). It stands out for higher crashes per 100k residents / yr and deaths per 100 crashes.
The headline for Jefferson County: 1 in 357 of truck crashes here involve garbage trucks: 0.3%, vs 0.9% in Montana.
Overview
Since 2015, 382 crashes involving commercial trucks have been reported in Jefferson County. They injured 116 people and killed 17.
That averages about one truck crash every 11 days in fully reported years.
Only 0 truck crashes were reported in Clancy since 2015; patterns below come from Jefferson County as a whole.
87% of truck crash reports in Jefferson County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
The worst month is January with 11.8% of truck crashes; the quietest is May at 3.9%.
November through March accounts for 52.8% of truck crashes here, compared with 54.3% in Montana.
By time of day, 10–11 am stands out with 8.4% of truck crashes.
Snow, slush or ice was on the road in 39.3% of truck crashes, compared with 39.4% in Montana.
Where crashes happen
Fatal large-truck crashes within 10 miles of Clancy since 2015 were spread across roads: US-12 (2), I-15 (1) and N Rodney St (1).
Garbage & waste trucks
1 crash involved a garbage or refuse truck, a 0.3% share (Montana: 0.9%).
Route planning tips for Clancy fleets
- Plan January schedules with more margin; it is the worst month for truck crashes in Jefferson County.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 Jefferson County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-12 | 2 |
| I-15 | 1 |
| N Rodney St | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Jefferson County) |
|---|---|
| I-90 | 3 |
| Mm 14 Mt-69 | 2 |
| I-902 Mm237.7 | 1 |
| I-90E Mm239.8 | 1 |
| I-90E Mm259.1 | 1 |
| I-90W Mm255.9 | 1 |
| Mile 0.0 State Hwy 69 | 1 |
| Mm 155.0 I-15S | 1 |
Clancy at a glance
| Land area | 39.2 sq mi |
| Median household income (ZIP 59634) | $129,891 |
| Median home value (ZIP 59634) | $556,516 |
Waste facilities and haulers nearby
Historical data: truck crashes in Jefferson 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 | — | — | 0.6 |
| 2000s | 16 | — | 0.5 |
| 2010s | 24 | +57% | 0.5 |
| 2020s | 36 | +48% | 1.4 |
In the 2000s about 16 truck crashes a year were reported; in the 2020s, about 36. Reporting coverage also changed between these periods. Fatal crashes involving a large truck averaged 0.2 a year in 2016–19 and 1.4 a year in 2020–24.
Nearby places
Questions fleets ask about Clancy
How common are truck crashes in Clancy?
Since 2015, 382 crashes involving commercial trucks were reported in Jefferson County (116 injured, 17 killed).
When do most truck crashes happen in Clancy?
January has the most truck crashes in Jefferson County, 11.8% of the yearly total.
How many garbage truck crashes are there in Clancy?
1 crash involving garbage or refuse trucks have been reported in Jefferson County since 2015, 0.3% of all truck crashes.
What is the truck crash rate in Clancy compared with Montana?
Per 100,000 residents, Jefferson County has 241.9 truck crashes a year; Montana has 64.3.
How do I plan a garbage truck route in Clancy?
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.