Sierra County, CA truck route planning & crash data
Plan safer truck routes in Sierra 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
0 of 49 truck crashes since 2015.
Deadliest roads
How Sierra County compares with California
Sierra County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Sierra County stands out
Full comparison
| Measure (2015–2025) | Sierra County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 137.3 | 33.2 | 49.7 | 4.1× the state |
| Deaths per 100 crashes | 4.3 | 3.6 | 3.4 | 1.2× the state |
| Injuries per crash | 0.34 | 0.44 | 0.49 | 23% below the state |
| Garbage-truck share | 0.0% | 1.6% | 2.3% | 100% below the state |
| On snow, slush or ice | 17.0% | 0.9% | 6.2% | 18.3× the state |
| Morning rush (6–10 am) | 14.9% | 23.5% | 23.7% | 37% below the state |
| In rain, sleet or snow | 12.8% | 6.5% | 13.8% | 2.0× the state |
| Winter months (Nov–Mar) | 34.0% | 40.2% | 41.9% | 15% below the state |
| After dark | 25.5% | 29.1% | 24.8% | 12% below the state |
Sierra County sits below California on injuries per crash, garbage-truck share and morning rush (6–10 am). Where it is higher: crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice.
The headline for Sierra County: 17.0% of truck crashes happened on snow, slush or ice, vs 0.9% in California.
Overview
Sierra County has recorded 49 truck crashes since 2015, with 17 people injured and 2 killed.
Across the years with complete reporting, that is roughly one truck crash every 85 days.
When crashes happen
Truck crashes peak in June (16.3% of the year) and are lowest in March (2.0%).
The five winter months (November to March) hold 34.0% of truck crashes, against 40.2% across California.
By time of day, 5–6 am stands out with 10.2% of truck crashes.
17.0% of truck crashes here happened on snow, slush or ice, against 0.9% across California.
Where crashes happen
Roads with fatal crashes involving a large truck in Sierra County since 2015: SR-89 (2). No single road stands out.
Garbage & waste trucks
Since 2015, no garbage-truck crashes were reported for Sierra County.
Route planning tips for Sierra County fleets
- Review driver schedules for June, the month with the most truck crashes.
- Icy and snowy roads show up in 17.0% of truck crashes here, more than California; schedule winter checks early.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 Sierra County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (in Sierra County) |
|---|---|
| SR-89 | 2 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Sierra County) |
|---|---|
| Rt80/200Ft E Solano/Coco Co Line | 2 |
| I-80 | 1 |
| Jackson Meadows Rd/2.7M W Rt89 | 1 |
| Ridge Road | 1 |
| Rt 49 / 0.3 Miles South Of Loganville Lane | 1 |
| Rt 49/.1Mi S Of Loganville Ln | 1 |
| Rt 80/.6Mi W Of California Nevada Stateline | 1 |
| Rt 80/2.5Mi E Of Farad | 1 |
Sierra County at a glance
| Population | 3,113 |
| Land area | 953.2 sq mi |
| Density | 3 per sq mi |
| Median household income (ZIP average) | $81,541 |
Waste facilities and haulers nearby
Historical data: truck crashes in Sierra 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 | — | — | 0.1 |
| 2000s | 3 | — | 0.0 |
| 2010s | 4 | +35% | 0.2 |
| 2020s | 4 | -5% | 0.2 |
Reported truck crashes averaged 3 a year in the 2000s and 4 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. NHTSA counts 0.2 fatal large-truck crashes a year in 2016–19 and 0.2 a year in 2020–24.
Cities, towns & communities in Sierra County
ZIP codes in Sierra County
Nearby counties
Questions fleets ask about Sierra County
How many truck crashes happen in Sierra County?
Since 2015, 49 crashes involving commercial trucks were reported in Sierra County (17 injured, 2 killed).
What is the worst month for truck crashes in Sierra County?
June has the most truck crashes in Sierra County, 16.3% of the yearly total.
How many garbage truck accidents happen in Sierra County?
Garbage trucks were involved in 0 reported crashes in Sierra County since 2015 (0.0% of truck crashes).
How does Sierra County compare with California for truck crashes?
The yearly rate is 137.3 truck crashes per 100,000 residents in Sierra County, vs 33.2 for California.
What is the best way to plan truck routes in Sierra County?
Use the free Route Planner: enter your stops to get a risk score, safer alternatives and the low bridges on your route.
2026 is a partial year. Updated October 2026.