ZIP 99170 (Rosalia, WA) truck route planning & crash data
Plan safer truck routes around ZIP 99170: 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 |
Compared with Washington, Whitman County is lower on garbage-truck share, in rain, sleet or snow and after dark. It stands out for higher crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice.
What stands out in Whitman County: 17.2% on snowy, slushy or icy roads, against 9.7% across Washington.
Overview
Police reported 209 crashes involving commercial trucks in Whitman County since 2015: 38 people were injured and 11 were killed.
That averages about one truck crash every 20 days in fully reported years.
When crashes happen
The worst month is August with 14.8% of truck crashes; the quietest is June at 4.8%.
November through March accounts for 44.4% of truck crashes here, compared with 43.8% in Washington.
The busiest hour is 2–3 pm, with 10.5% of truck crashes.
17.2% of truck crashes here happened on snow, slush or ice, against 9.7% across Washington.
Where crashes happen
The deadliest road for trucks within 10 miles of ZIP 99170 is US-195, with 5 fatal large-truck crashes since 2015.
Garbage & waste trucks
4 crashes involved a garbage or refuse truck, a 1.9% share (Washington: 2.2%).
Route planning tips for ZIP 99170 fleets
- Review driver schedules for August, the month with the most truck crashes.
- Where you can, review stops along US-195; it has the most fatal large-truck crashes nearby.
- Icy and snowy roads show up in 17.2% of truck crashes here, more than Washington; schedule winter 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 | 5 |
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 99170 at a glance
| Population | 926 |
| Density | 2 per sq mi |
| Median household income | $58,750 |
| Median home value | $235,909 |
| Home ownership | 84% |
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 99170
How many truck crashes happen in ZIP 99170?
Since 2015, 209 crashes involving commercial trucks were reported in Whitman County (38 injured, 11 killed).
What is the most dangerous road for trucks in ZIP 99170?
NHTSA data shows US-195 with 5 fatal large-truck crashes within 10 miles of ZIP 99170 since 2015, the highest of any road.
When do most truck crashes happen in ZIP 99170?
The worst month is August: 14.8% of truck crashes in Whitman County happen then.
How many garbage truck accidents happen in ZIP 99170?
4 crashes involving garbage or refuse trucks have been reported in Whitman County since 2015, 1.9% of all truck crashes.
How does ZIP 99170 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 do I plan a garbage truck route in ZIP 99170?
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.