South Hills, MT truck route planning & crash data
Plan safer truck routes in South Hills: commercial truck and garbage truck crashes in South Hills and Lewis and Clark County, dangerous roads, seasonality and route safety data for fleets. Patterns use Lewis and Clark County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
2 of 228 truck crashes since 2015.
Deadliest roads
How Lewis and Clark County compares with Montana
Lewis and Clark County against Montana and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Lewis and Clark County stands out
Full comparison
| Measure (2015–2025) | Lewis and Clark County | Montana | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 24.9 | 64.3 | 49.7 | 61% below the state |
| Deaths per 100 crashes | 5.3 | 3.8 | 3.4 | 1.4× the state |
| Injuries per crash | 0.29 | 0.34 | 0.49 | 15% below the state |
| Garbage-truck share | 1.0% | 0.9% | 2.3% | same |
| On snow, slush or ice | 34.5% | 39.4% | 6.2% | 12% below the state |
| Morning rush (6–10 am) | 20.9% | 22.9% | 23.7% | 9% below the state |
| In rain, sleet or snow | 24.3% | 20.6% | 13.8% | 1.2× the state |
| Winter months (Nov–Mar) | 45.6% | 54.3% | 41.9% | 16% below the state |
| After dark | 20.9% | 30.8% | 24.8% | 32% below the state |
Lewis and Clark County sits below Montana on crashes per 100k residents / yr, injuries per crash and on snow, slush or ice. Where it is higher: deaths per 100 crashes and in rain, sleet or snow.
The headline for South Hills: US-12 3 fatal truck crashes since 2015, more than any other road within 10 miles of South Hills.
Overview
Police reported 228 crashes involving commercial trucks in Lewis and Clark County since 2015: 69 people were injured and 12 were killed.
Across the years with complete reporting, that is roughly one truck crash every 19 days.
Only 0 truck crashes were reported in South Hills since 2015; patterns below come from Lewis and Clark County as a whole.
82% of truck crash reports in Lewis and Clark County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
October has the most truck crashes, 13.2% of the yearly total, while May has the fewest (3.9%).
The five winter months (November to March) hold 45.6% of truck crashes, against 54.3% across Montana.
The busiest hour is 1–2 pm, with 9.6% of truck crashes.
34.5% of truck crashes here happened on snow, slush or ice, against 39.4% across Montana.
Where crashes happen
US-12 leads within 10 miles of South Hills with 3 fatal crashes involving a large truck since 2015. It is followed by Canyon Ferry Rd (1), I-15 (1) and N Rodney St (1).
Garbage & waste trucks
Garbage trucks account for 2 of the truck crashes here, or 0.9%, compared with 0.9% in Montana.
Route planning tips for South Hills fleets
- Plan October schedules with more margin; it is the worst month for truck crashes in Lewis and Clark County.
- Look at alternatives to US-12 at busy times: it leads this area in fatal truck crashes.
- 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 Lewis and Clark County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-12 | 3 |
| Canyon Ferry Rd | 1 |
| I-15 | 1 |
| N Rodney St | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Lewis and Clark County) |
|---|---|
| Mm 221.5 I-15 | 4 |
| Mm 213.0 I-15 | 3 |
| Mm221.6 I-15 | 2 |
| Canyon Ferry Rd\Custer Ave | 1 |
| E Us Highway 12 And Lola St | 1 |
| Mm 108.2 Mt Highway 200 | 1 |
| Mm 213.1 I-15 | 1 |
| Mm 213.1 I15 | 1 |
South Hills at a glance
| Land area | 5.9 sq mi |
Waste facilities and haulers nearby
Historical data: truck crashes in Lewis and Clark 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 | — | — | 0.5 |
| 2000s | 18 | — | 0.5 |
| 2010s | 18 | +1% | 0.5 |
| 2020s | 18 | +0% | 1.2 |
In the 2000s about 18 truck crashes a year were reported; in the 2020s, about 18. Reporting coverage also changed between these periods. NHTSA counts 0.8 fatal large-truck crashes a year in 2016–19 and 1.2 a year in 2020–24.
Nearby places
Questions fleets ask about South Hills
How many truck accidents are there in South Hills?
Lewis and Clark County has had 228 reported truck crashes since 2015, injuring 69 people and killing 12.
Where do fatal truck crashes happen most in South Hills?
US-12 had 3 fatal crashes involving a large truck within 10 miles of South Hills since 2015, more than any other road.
When do most truck crashes happen in South Hills?
October has the most truck crashes in Lewis and Clark County, 13.2% of the yearly total.
Are garbage truck crashes common in South Hills?
Garbage trucks were involved in 2 reported crashes in Lewis and Clark County since 2015 (0.9% of truck crashes).
How does South Hills compare with Montana for truck crashes?
The yearly rate is 24.9 truck crashes per 100,000 residents in Lewis and Clark County, vs 64.3 for Montana.
What is the best way to plan truck routes in South Hills?
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.