Trinity County, CA truck route planning & crash data
Plan safer truck routes in Trinity County: commercial truck and garbage truck crashes, 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
2 of 173 truck crashes since 2015.
Deadliest roads
How Trinity County compares with California
Trinity County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Trinity County stands out
Full comparison
| Measure (2015–2025) | Trinity County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 98.8 | 33.2 | 49.7 | 3.0× the state |
| Deaths per 100 crashes | 1.8 | 3.6 | 3.4 | 50% below the state |
| Injuries per crash | 0.34 | 0.44 | 0.49 | 23% below the state |
| Garbage-truck share | 1.2% | 1.6% | 2.3% | 28% below the state |
| On snow, slush or ice | 5.3% | 0.9% | 6.2% | 5.7× the state |
| Morning rush (6–10 am) | 30.0% | 23.5% | 23.7% | 1.3× the state |
| In rain, sleet or snow | 8.8% | 6.5% | 13.8% | 1.4× the state |
| Winter months (Nov–Mar) | 34.1% | 40.2% | 41.9% | 15% below the state |
| After dark | 15.9% | 29.1% | 24.8% | 45% below the state |
Trinity County has lower values than California for deaths per 100 crashes, injuries per crash and garbage-truck share. It stands out for higher crashes per 100k residents / yr, on snow, slush or ice and morning rush (6–10 am).
The headline for Trinity County: 5.3% of truck crashes happened on snow, slush or ice, vs 0.9% in California.
Overview
Trinity County has recorded 173 truck crashes since 2015, with 61 people injured and 3 killed.
That averages about one truck crash every 24 days in fully reported years.
When crashes happen
Truck crashes peak in June (16.8% of the year) and are lowest in February (4.6%).
Winter months (Nov–Mar) carry 34.1% of truck crashes, vs 40.2% for California.
More truck crashes happen at 9–10 am than at any other hour (11.6%).
5.3% of truck crashes here happened on snow, slush or ice, against 0.9% across California.
Where crashes happen
Fatal large-truck crashes in Trinity County since 2015 were spread across roads: SR-299 (3).
Garbage & waste trucks
2 crashes involved a garbage or refuse truck, a 1.2% share (California: 1.6%).
Route planning tips for Trinity County fleets
- Plan June schedules with more margin; it is the worst month for truck crashes in Trinity County.
- Morning starts matter: 30.0% of truck crashes fall between 6 and 10 am, higher than California.
- With 5.3% 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
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 Trinity County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (in Trinity County) |
|---|---|
| SR-299 | 3 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Trinity County) |
|---|---|
| SR-299 | 4 |
| Rt 299 / 0.2 Miles West Of Wilson Mountain Road | 2 |
| Rt299/.3M E Grass Valley Creek | 2 |
| Rt299/1.3M E Trinity Dam Bl | 2 |
| Rt36/6.4M E Rt3 | 2 |
| Sr3/110Ft N Mpm3-Tri-15.71 | 2 |
| Brady Rd/88Ft W Rt3 | 1 |
| Ca299/400Ft W Prairie Creek Rd | 1 |
Trinity County at a glance
| Population | 15,642 |
| Land area | 3,179.3 sq mi |
| Density | 5 per sq mi |
| Median household income (ZIP average) | $55,859 |
Waste facilities and haulers nearby
Historical data: truck crashes in Trinity 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 | 12 | — | 0.6 |
| 2010s | 12 | +3% | 0.2 |
| 2020s | 15 | +21% | 0.6 |
Reported truck crashes averaged 12 a year in the 2000s and 15 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal large-truck crashes: 0.0 a year in 2016–19, 0.6 a year in 2020–24.
Cities, towns & communities in Trinity County
ZIP codes in Trinity County
Nearby counties
Questions fleets ask about Trinity County
How many truck crashes happen in Trinity County?
173 truck crashes have been reported in Trinity County since 2015, with 3 deaths and 61 injuries.
Which month has the most truck crashes in Trinity County?
The worst month is June: 16.8% of truck crashes in Trinity County happen then.
How many garbage truck crashes are there in Trinity County?
2 crashes involving garbage or refuse trucks have been reported in Trinity County since 2015, 1.2% of all truck crashes.
What is the truck crash rate in Trinity County compared with California?
The yearly rate is 98.8 truck crashes per 100,000 residents in Trinity County, vs 33.2 for California.
What is the best way to plan truck routes in Trinity County?
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.