Williams, CA truck route planning & crash data
Plan safer truck routes in Williams: commercial truck and garbage truck crashes in Williams and Colusa County, dangerous roads, seasonality and route safety data for fleets. Patterns use Colusa County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
3 of 393 truck crashes since 2015.
Deadliest roads
How Colusa County compares with California
Colusa County against California and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Colusa County stands out
Full comparison
| Measure (2015–2025) | Colusa County | California | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 157.3 | 33.2 | 49.7 | 4.7× the state |
| Deaths per 100 crashes | 5.5 | 3.6 | 3.4 | 1.5× the state |
| Injuries per crash | 0.34 | 0.44 | 0.49 | 23% below the state |
| Garbage-truck share | 0.8% | 1.6% | 2.3% | 52% below the state |
| On snow, slush or ice | 0.0% | 0.9% | 6.2% | 100% below the state |
| Morning rush (6–10 am) | 23.0% | 23.5% | 23.7% | same |
| In rain, sleet or snow | 4.2% | 6.5% | 13.8% | 36% below the state |
| Winter months (Nov–Mar) | 31.9% | 40.2% | 41.9% | 21% below the state |
| After dark | 30.6% | 29.1% | 24.8% | same |
Colusa County sits below California on injuries per crash, garbage-truck share and on snow, slush or ice. It runs above California on crashes per 100k residents / yr and deaths per 100 crashes.
Colusa County at a glance: September the month with the most truck crashes: 16.0% of the year's total.
Overview
Since 2015, 393 crashes involving commercial trucks have been reported in Colusa County. They injured 134 people and killed 21.
Across the years with complete reporting, that is roughly one truck crash every 11 days.
Only 22 truck crashes were reported in Williams since 2015; patterns below come from Colusa County as a whole.
When crashes happen
September has the most truck crashes, 16.0% of the yearly total, while January has the fewest (5.3%).
November through March accounts for 31.9% of truck crashes here, compared with 40.2% in California.
More truck crashes happen at 7–8 am than at any other hour (8.7%).
0.0% of truck crashes here happened on snow, slush or ice, against 0.9% across California.
Where crashes happen
The deadliest road for trucks within 10 miles of Williams is I-5, with 6 fatal large-truck crashes since 2015. Next come SR-20 (3), CR-DANLEY Lateral Rd (1) and CR-OLD Hwy 99W (1).
Garbage & waste trucks
Garbage trucks account for 3 of the truck crashes here, or 0.8%, compared with 1.6% in California.
Route planning tips for Williams fleets
- Plan September schedules with more margin; it is the worst month for truck crashes in Colusa County.
- Look at alternatives to I-5 at busy times: it leads this area in fatal truck crashes.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
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 Colusa County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-5 | 6 |
| SR-20 | 3 |
| CR-DANLEY Lateral Rd | 1 |
| CR-OLD Hwy 99W | 1 |
| Old Hwy 99W | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Colusa County) |
|---|---|
| Rt5/1000Ft N Greenbay Rd | 4 |
| SR-20 | 4 |
| Rt5 Nb/1.6M N Lurline Rd O/C | 3 |
| Rt 5/Rt 20 | 3 |
| Old Hwy 99W/1M N Hahn Rd | 3 |
| Lonestar Road | 2 |
| Old Hwy 99W/Myers Rd | 2 |
| Rt20/2.1M W Walnut Dr | 2 |
Williams at a glance
| Population | 5,598 |
| Land area | 4.9 sq mi |
| Density | 1,132 per sq mi |
| Median household income (ZIP 95987) | $95,122 |
| Median home value (ZIP 95987) | $391,979 |
Waste facilities and haulers nearby
Historical data: truck crashes in Colusa 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 | — | — | 0.8 |
| 2000s | 26 | — | 0.9 |
| 2010s | 29 | +11% | 1.4 |
| 2020s | 34 | +19% | 1.8 |
Reported truck crashes averaged 26 a year in the 2000s and 34 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. NHTSA counts 1.8 fatal large-truck crashes a year in 2016–19 and 1.8 a year in 2020–24.
Nearby places
Questions fleets ask about Williams
How common are truck crashes in Williams?
393 truck crashes have been reported in Colusa County since 2015, with 21 deaths and 134 injuries.
Where do fatal truck crashes happen most in Williams?
NHTSA data shows I-5 with 6 fatal large-truck crashes within 10 miles of Williams since 2015, the highest of any road.
When do most truck crashes happen in Williams?
September has the most truck crashes in Colusa County, 16.0% of the yearly total.
How many garbage truck crashes are there in Williams?
3 crashes involving garbage or refuse trucks have been reported in Colusa County since 2015, 0.8% of all truck crashes.
What is the truck crash rate in Williams compared with California?
Colusa County records 157.3 truck crashes per 100,000 residents a year, against 33.2 across California.
How do I plan a garbage truck route in Williams?
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.