ZIP 94597 (Walnut Creek, CA) truck route planning & crash data
Plan safer truck routes around ZIP 94597: commercial truck and garbage truck crashes here and in Contra Costa County, 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
3.3 deaths per 100 garbage-truck crashes vs 3.1 for all trucks.
Deadliest roads
How Contra Costa County compares with California
Contra Costa County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Contra Costa County stands out
Full comparison
| Measure (2015–2025) | Contra Costa County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 17.7 | 33.2 | 49.7 | 47% below the state |
| Deaths per 100 crashes | 3.1 | 3.6 | 3.4 | 14% below the state |
| Injuries per crash | 0.48 | 0.44 | 0.49 | 1.1× the state |
| Garbage-truck share | 2.6% | 1.6% | 2.3% | 1.6× the state |
| On snow, slush or ice | 0.1% | 0.9% | 6.2% | 86% below the state |
| Morning rush (6–10 am) | 26.3% | 23.5% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 7.3% | 6.5% | 13.8% | 1.1× the state |
| Winter months (Nov–Mar) | 40.8% | 40.2% | 41.9% | same |
| After dark | 27.3% | 29.1% | 24.8% | same |
Contra Costa County sits below California on crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice. It stands out for higher injuries per crash, garbage-truck share and morning rush (6–10 am).
The headline for Contra Costa County: 1 in 38 garbage-truck share of crashes is 2.6%, against 1.6% for California.
Overview
Police reported 2,377 crashes involving commercial trucks in Contra Costa County since 2015: 1,171 people were injured and 73 were killed.
That averages about one truck crash every 2 days in fully reported years.
When crashes happen
August has the most truck crashes, 10.1% of the yearly total, while November has the fewest (7.3%).
November through March accounts for 40.8% of truck crashes here, compared with 40.2% in California.
By time of day, 8–9 am stands out with 7.8% of truck crashes.
Road surface: 0.1% of truck crashes were on snow, slush or ice (California: 0.9%).
Where crashes happen
The deadliest road for trucks within 10 miles of ZIP 94597 is I-680, with 8 fatal large-truck crashes since 2015. It is followed by SR-4 (3), Clayton Rd (1) and Merriewood Dr (1).
Garbage & waste trucks
60 crashes involved a garbage or refuse truck, a 2.5% share (California: 1.6%).
The most garbage-truck crashes happen in February (15%).
Per 100 crashes, garbage trucks recorded 3.3 deaths compared with 3.1 for all trucks.
Route planning tips for ZIP 94597 fleets
- Review driver schedules for August, the month with the most truck crashes.
- Where you can, review stops along I-680; it has the most fatal large-truck crashes nearby.
- Waste haulers: February is the peak month for garbage-truck crashes in Contra Costa County.
- Morning starts matter: 26.3% of truck crashes fall between 6 and 10 am, higher than California.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
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 Contra Costa County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-680 | 8 |
| SR-4 | 3 |
| Clayton Rd | 1 |
| Merriewood Dr | 1 |
| Pacheco Blvd | 1 |
| Port Chicago Hwy | 1 |
| Reliez Valley Rd | 1 |
| SR-24 | 1 |
| SR-242 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Contra Costa County) |
|---|---|
| SR-4 | 21 |
| I-680 | 14 |
| Sr-4 W/B | 8 |
| Sr-4 E/B | 5 |
| Richmond Pkwy/Pittsburg Av | 5 |
| Clayton Rd | 4 |
| I-80 | 4 |
| Sr160 Sb/1500Ft N Wilbur Av | 3 |
ZIP 94597 at a glance
| Population | 23,129 |
| Density | 2,203 per sq mi |
| Median household income | $132,063 |
| Median home value | $1,029,219 |
| Home ownership | 46% |
Waste facilities and haulers nearby
Historical data: truck crashes in Contra Costa 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 | — | — | 4.8 |
| 2000s | 123 | — | 4.4 |
| 2010s | 176 | +43% | 3.7 |
| 2020s | 207 | +17% | 6.2 |
From the 2000s to the 2020s, yearly reported truck crashes went from 123 to 207. Some of the change may reflect how crashes were reported. Fatal large-truck crashes: 5.8 a year in 2016–19, 6.2 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 94597
How common are truck crashes in ZIP 94597?
Since 2015, 2,377 crashes involving commercial trucks were reported in Contra Costa County (1,171 injured, 73 killed).
Which road has the most fatal truck crashes in ZIP 94597?
NHTSA data shows I-680 with 8 fatal large-truck crashes within 10 miles of ZIP 94597 since 2015, the highest of any road.
What is the worst month for truck crashes in ZIP 94597?
August has the most truck crashes in Contra Costa County, 10.1% of the yearly total.
How many garbage truck accidents happen in ZIP 94597?
60 crashes involving garbage or refuse trucks have been reported in Contra Costa County since 2015, 2.5% of all truck crashes.
How do truck crashes in ZIP 94597 compare with California?
Contra Costa County records 17.7 truck crashes per 100,000 residents a year, against 33.2 across California.
How can I plan a safer truck route in ZIP 94597?
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.