Coulterville, CA truck route planning & crash data
Plan safer truck routes in Coulterville: commercial truck and garbage truck crashes in Coulterville and Mariposa County, dangerous roads, seasonality and route safety data for fleets. Patterns use Mariposa County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
3 of 55 truck crashes since 2015.
Deadliest roads
No fatal large-truck crashes with a road name recorded here since 2015.
How Mariposa County compares with California
Mariposa County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Mariposa County stands out
Full comparison
| Measure (2015–2025) | Mariposa County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 26.7 | 33.2 | 49.7 | 20% below the state |
| Deaths per 100 crashes | 6.0 | 3.6 | 3.4 | 1.7× the state |
| Injuries per crash | 0.50 | 0.44 | 0.49 | 1.1× the state |
| Garbage-truck share | 6.0% | 1.6% | 2.3% | 3.7× the state |
| On snow, slush or ice | 6.0% | 0.9% | 6.2% | 6.5× the state |
| Morning rush (6–10 am) | 38.0% | 23.5% | 23.7% | 1.6× the state |
| In rain, sleet or snow | 6.0% | 6.5% | 13.8% | 8% below the state |
| Winter months (Nov–Mar) | 36.0% | 40.2% | 41.9% | 11% below the state |
| After dark | 16.0% | 29.1% | 24.8% | 45% below the state |
Mariposa County sits below California on crashes per 100k residents / yr, in rain, sleet or snow and winter months (nov–mar). It stands out for higher deaths per 100 crashes, injuries per crash and garbage-truck share.
Mariposa County at a glance: 6.0% on snowy, slushy or icy roads, against 0.9% across California.
Overview
Since 2015, 55 crashes involving commercial trucks have been reported in Mariposa County. They injured 29 people and killed 3.
In complete reporting years that works out to about one truck crash every 80 days.
Only 0 truck crashes were reported in Coulterville since 2015; patterns below come from Mariposa County as a whole.
When crashes happen
Truck crashes peak in July (14.5% of the year) and are lowest in February (0.0%).
Winter months (Nov–Mar) carry 36.0% of truck crashes, vs 40.2% for California.
The busiest hour is 9–10 am, with 18.2% of truck crashes.
Snow, slush or ice was on the road in 6.0% of truck crashes, compared with 0.9% in California.
Where crashes happen
Since 2015, no fatal large-truck crashes with a location were recorded within 10 miles of Coulterville.
Garbage & waste trucks
Garbage trucks account for 3 of the truck crashes here, or 5.5%, compared with 1.6% in California.
Route planning tips for Coulterville fleets
- Review driver schedules for July, the month with the most truck crashes.
- The morning rush (6–10 am) holds 38.0% of truck crashes here, more than California; adjust start times where you can.
- With 6.0% of truck crashes on snow, slush or ice (above California), plan winter equipment checks early.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
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 Mariposa 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 (Mariposa County) |
|---|---|
| SR-140 | 3 |
| Rt49/255Ft S Of Stumpfield Mountain Rd | 2 |
| SR-49 | 2 |
| Bear Valley Rd/78Ft W Hunters Valley Rd | 1 |
| Greeley Hill Rd | 1 |
| Highway 140/450Ft W Martin Rd | 1 |
| Horseshoe Bend Rd/600Ft N Sr132 | 1 |
| Jerseydale Rd/.7M S Wild Dove Ln | 1 |
Coulterville at a glance
| Land area | 0.4 sq mi |
| Median household income (ZIP 95311) | $56,029 |
| Median home value (ZIP 95311) | $310,938 |
Waste facilities and haulers nearby
Historical data: truck crashes in Mariposa 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 | — | — | 0.2 |
| 2000s | 5 | — | 0.1 |
| 2010s | 3 | -34% | 0.5 |
| 2020s | 5 | +52% | 0.2 |
In the 2000s about 5 truck crashes a year were reported; in the 2020s, about 5. Reporting coverage also changed between these periods. Fatal crashes involving a large truck averaged 0.8 a year in 2016–19 and 0.2 a year in 2020–24.
Nearby places
Questions fleets ask about Coulterville
How many truck crashes happen in Coulterville?
55 truck crashes have been reported in Mariposa County since 2015, with 3 deaths and 29 injuries.
When do most truck crashes happen in Coulterville?
July has the most truck crashes in Mariposa County, 14.5% of the yearly total.
How many garbage truck accidents happen in Coulterville?
Since 2015, Mariposa County has reported 3 garbage-truck crashes, or 5.5% of its truck crashes.
How does Coulterville compare with California for truck crashes?
The yearly rate is 26.7 truck crashes per 100,000 residents in Mariposa County, vs 33.2 for California.
What is the best way to plan truck routes in Coulterville?
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.