ZIP 99176 (Thornton, WA) truck route planning & crash data
Plan safer truck routes around ZIP 99176: commercial truck and garbage truck crashes here and in Whitman 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
4 of 209 truck crashes since 2015.
Deadliest roads
How Whitman County compares with Washington
Whitman County against Washington and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Whitman County stands out
Full comparison
| Measure (2015–2025) | Whitman County | Washington | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 37.2 | 25.8 | 49.7 | 1.4× the state |
| Deaths per 100 crashes | 5.1 | 3.4 | 3.4 | 1.5× the state |
| Injuries per crash | 0.18 | 0.18 | 0.49 | same |
| Garbage-truck share | 2.0% | 2.2% | 2.3% | 8% below the state |
| On snow, slush or ice | 17.2% | 9.7% | 6.2% | 1.8× the state |
| Morning rush (6–10 am) | 24.8% | 24.8% | 23.7% | same |
| In rain, sleet or snow | 12.1% | 20.2% | 13.8% | 40% below the state |
| Winter months (Nov–Mar) | 44.4% | 43.8% | 41.9% | same |
| After dark | 16.2% | 25.2% | 24.8% | 36% below the state |
Whitman County has lower values than Washington for garbage-truck share, in rain, sleet or snow and after dark. Where it is higher: crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice.
The headline for Whitman County: 17.2% of truck crashes happened on snow, slush or ice, vs 9.7% in Washington.
Overview
Since 2015, 209 crashes involving commercial trucks have been reported in Whitman County. They injured 38 people and killed 11.
In complete reporting years that works out to about one truck crash every 20 days.
When crashes happen
Truck crashes peak in August (14.8% of the year) and are lowest in June (4.8%).
The five winter months (November to March) hold 44.4% of truck crashes, against 43.8% across Washington.
The busiest hour is 2–3 pm, with 10.5% of truck crashes.
Road surface: 17.2% of truck crashes were on snow, slush or ice (Washington: 9.7%).
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of ZIP 99176 happened on US-195 (2) and SR-23 (1); no road leads clearly.
Garbage & waste trucks
Garbage and refuse trucks were involved in 4 crashes, 1.9% of the total, against 2.2% across Washington.
Route planning tips for ZIP 99176 fleets
- Plan August schedules with more margin; it is the worst month for truck crashes in Whitman County.
- With 17.2% of truck crashes on snow, slush or ice (above Washington), plan winter equipment checks early.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
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 Whitman County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-195 | 2 |
| SR-23 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Whitman County) |
|---|---|
| Sr-128*001.00 | 3 |
| Sr-195*000.50 | 3 |
| Farmington Rd/Sr-27 | 2 |
| Sr-128*000.50 | 2 |
| Sr-194*003.00 | 2 |
| Sr-195*002.00 | 2 |
| Sr-195*018.00 | 2 |
| Sr-195*036.50 | 2 |
ZIP 99176 at a glance
| Population | 163 |
| Density | 1 per sq mi |
| Median household income | $128,000 |
| Median home value | $333,382 |
| Home ownership | 81% |
Waste facilities and haulers nearby
Historical data: truck crashes in Whitman 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 | 7 | — | 0.6 |
| 2000s | 14 | +93% | 0.8 |
| 2010s | 17 | +21% | 0.9 |
| 2020s | 16 | -4% | 1.0 |
In the 1990s about 7 truck crashes a year were reported; in the 2020s, about 16. Reporting coverage also changed between these periods. Fatal crashes involving a large truck averaged 1.2 a year in 2016–19 and 1.0 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 99176
How many truck accidents are there in ZIP 99176?
209 truck crashes have been reported in Whitman County since 2015, with 11 deaths and 38 injuries.
What is the worst month for truck crashes in ZIP 99176?
August has the most truck crashes in Whitman County, 14.8% of the yearly total.
Are garbage truck crashes common in ZIP 99176?
4 crashes involving garbage or refuse trucks have been reported in Whitman County since 2015, 1.9% of all truck crashes.
How does ZIP 99176 compare with Washington for truck crashes?
The yearly rate is 37.2 truck crashes per 100,000 residents in Whitman County, vs 25.8 for Washington.
How can I plan a safer truck route in ZIP 99176?
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.