Napa County, CA truck route planning & crash data
Plan safer truck routes in Napa 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
10 of 561 truck crashes since 2015.
Deadliest roads
How Napa County compares with California
Napa County against California and the US, 2015–2024 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Napa County stands out
Full comparison
| Measure (2015–2024) | Napa County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 39.2 | 33.2 | 49.7 | 1.2× the state |
| Deaths per 100 crashes | 3.5 | 3.6 | 3.4 | same |
| Injuries per crash | 0.50 | 0.44 | 0.49 | 1.1× the state |
| Garbage-truck share | 1.9% | 1.6% | 2.3% | 1.2× the state |
| On snow, slush or ice | 0.4% | 0.9% | 6.2% | 59% below the state |
| Morning rush (6–10 am) | 29.8% | 23.5% | 23.7% | 1.3× the state |
| In rain, sleet or snow | 7.5% | 6.5% | 13.8% | 1.2× the state |
| Winter months (Nov–Mar) | 38.3% | 40.2% | 41.9% | same |
| After dark | 12.3% | 29.1% | 24.8% | 58% below the state |
Napa County has lower values than California for on snow, slush or ice and after dark. It runs above California on crashes per 100k residents / yr, injuries per crash and garbage-truck share.
The headline for Napa County: SR-29 deadliest road: 5 fatal truck crashes in Napa County since 2015.
Overview
Napa County has recorded 561 truck crashes since 2015, with 276 people injured and 19 killed.
Across the years with complete reporting, that is roughly one truck crash every 7 days.
When crashes happen
Truck crashes peak in October (10.9% of the year) and are lowest in January (6.2%).
November through March accounts for 38.3% of truck crashes here, compared with 40.2% in California.
The busiest hour is 11 am–12 pm, with 8.9% of truck crashes.
Road surface: 0.4% of truck crashes were on snow, slush or ice (California: 0.9%).
Where crashes happen
Within this area, SR-29 had the most fatal crashes involving a large truck since 2015 (5). It is followed by SR-128 (4), SR-221 (2) and Silverado Trl (2).
Garbage & waste trucks
10 crashes involved a garbage or refuse truck, a 1.8% share (California: 1.6%).
Route planning tips for Napa County fleets
- Build extra time into October routes: it has the most truck crashes here.
- Check whether your routes use SR-29, the road with the most fatal truck crashes in this area.
- 29.8% of truck crashes happen between 6 and 10 am, above California; consider earlier or later starts where possible.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
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.
Reporting to FMCSA was incomplete in 2025; rates and comparisons skip those years.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Napa County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (in Napa County) |
|---|---|
| SR-29 | 5 |
| SR-128 | 4 |
| SR-221 | 2 |
| Silverado Trl | 2 |
| Buhman Ave | 1 |
| Oakville Grade Rd | 1 |
| Petrified Forest Rd | 1 |
| SR-121 | 1 |
| Siverado Trail | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Napa County) |
|---|---|
| SR-29 | 12 |
| Rt128/Petrified Forest Rd | 5 |
| Rt29/Deer Park Rd | 3 |
| Rt12/Rt29 | 3 |
| Big Ranch Rd/662Ft N Salvador Av | 2 |
| Broadway/Eucalyptus Dr | 2 |
| Broadway/Green Island Rd | 2 |
| Broadway/Paoli Loop Rd | 2 |
Napa County at a glance
| Population | 132,727 |
| Land area | 752.0 sq mi |
| Density | 177 per sq mi |
| Median household income (ZIP average) | $113,578 |
Waste facilities and haulers nearby
Historical data: truck crashes in Napa 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 | — | — | 1.7 |
| 2000s | 32 | — | 1.2 |
| 2010s | 45 | +41% | 1.3 |
| 2020s | 52 | +16% | 1.8 |
Reported truck crashes averaged 32 a year in the 2000s and 52 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. NHTSA counts 1.5 fatal large-truck crashes a year in 2016–19 and 1.8 a year in 2020–24.
Cities, towns & communities in Napa County
ZIP codes in Napa County
Nearby counties
Questions fleets ask about Napa County
How many truck crashes happen in Napa County?
561 truck crashes have been reported in Napa County since 2015, with 19 deaths and 276 injuries.
What is the most dangerous road for trucks in Napa County?
NHTSA data shows SR-29 with 5 fatal large-truck crashes in Napa County since 2015, the highest of any road.
When do most truck crashes happen in Napa County?
October has the most truck crashes in Napa County, 10.9% of the yearly total.
How many garbage truck accidents happen in Napa County?
10 crashes involving garbage or refuse trucks have been reported in Napa County since 2015, 1.8% of all truck crashes.
What is the truck crash rate in Napa County compared with California?
The yearly rate is 39.2 truck crashes per 100,000 residents in Napa County, vs 33.2 for California.
What is the best way to plan truck routes in Napa County?
Use the free Route Planner: enter your stops to get a risk score, safer alternatives and the low bridges on your route.
Crash reporting to FMCSA was incomplete in 2025; those years are greyed out and left out of rates. 2026 is a partial year. Updated October 2026.