ZIP 59634 (Clancy, MT) truck route planning & crash data
Plan safer truck routes around ZIP 59634: commercial truck and garbage truck crashes here and in Jefferson 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
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 runs above Montana on 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
Jefferson County has recorded 382 truck crashes since 2015, with 116 people injured and 17 killed.
Across the years with complete reporting, that is roughly one truck crash every 11 days.
When crashes happen
Truck crashes peak in January (11.8% of the year) and are lowest in May (3.9%).
Winter months (Nov–Mar) carry 52.8% of truck crashes, vs 54.3% for Montana.
By time of day, 10–11 am stands out with 8.4% of truck crashes.
Road surface: 39.3% of truck crashes were on snow, slush or ice (Montana: 39.4%).
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of ZIP 59634 happened on I-15 (1) and N Rodney St (1); no road leads clearly.
Garbage & waste trucks
Garbage trucks account for 1 of the truck crashes here, or 0.3%, compared with 0.9% in Montana.
Route planning tips for ZIP 59634 fleets
- Review driver schedules for January, the month with the most truck crashes.
- 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 Jefferson County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| 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 |
ZIP 59634 at a glance
| Population | 5,521 |
| Density | 8 per sq mi |
| Median household income | $129,891 |
| Median home value | $556,516 |
| Home ownership | 94% |
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 |
From the 2000s to the 2020s, yearly reported truck crashes went from 16 to 36. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 0.2 a year in 2016–19 and 1.4 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 59634
How many truck accidents are there in ZIP 59634?
Jefferson County has had 382 reported truck crashes since 2015, injuring 116 people and killing 17.
Which month has the most truck crashes in ZIP 59634?
The worst month is January: 11.8% of truck crashes in Jefferson County happen then.
How many garbage truck accidents happen in ZIP 59634?
1 crash involving garbage or refuse trucks have been reported in Jefferson County since 2015, 0.3% of all truck crashes.
How does ZIP 59634 compare with Montana for truck crashes?
The yearly rate is 241.9 truck crashes per 100,000 residents in Jefferson County, vs 64.3 for Montana.
What is the best way to plan truck routes in ZIP 59634?
Paste your stops into the free CurbWaste Route Planner: it scores your route against fatal-crash locations, suggests safer alternatives and flags low bridges.
2026 is a partial year. Updated October 2026.