ZIP 99328 (Dayton, WA) truck route planning & crash data
Plan safer truck routes around ZIP 99328: commercial truck and garbage truck crashes here and in Columbia 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
1 of 36 truck crashes since 2015.
Deadliest roads
How Columbia County compares with Washington
Columbia County against Washington and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Columbia County stands out
Full comparison
| Measure (2015–2025) | Columbia County | Washington | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 79.1 | 25.8 | 49.7 | 3.1× the state |
| Deaths per 100 crashes | 2.9 | 3.4 | 3.4 | 15% below the state |
| Injuries per crash | 0.20 | 0.18 | 0.49 | 1.1× the state |
| Garbage-truck share | 2.9% | 2.2% | 2.3% | 1.3× the state |
| On snow, slush or ice | 8.6% | 9.7% | 6.2% | 12% below the state |
| Morning rush (6–10 am) | 28.6% | 24.8% | 23.7% | 1.2× the state |
| In rain, sleet or snow | 5.7% | 20.2% | 13.8% | 72% below the state |
| Winter months (Nov–Mar) | 25.7% | 43.8% | 41.9% | 41% below the state |
| After dark | 14.3% | 25.2% | 24.8% | 43% below the state |
Columbia County sits below Washington on deaths per 100 crashes, on snow, slush or ice and in rain, sleet or snow. It runs above Washington on crashes per 100k residents / yr, injuries per crash and garbage-truck share.
The headline for Columbia County: August worst month: 22.2% of truck crashes, vs 8.3% in an average month.
Overview
Police reported 36 crashes involving commercial trucks in Columbia County since 2015: 8 people were injured and 1 were killed.
That averages about one truck crash every 115 days in fully reported years.
When crashes happen
August has the most truck crashes, 22.2% of the yearly total, while January has the fewest (2.8%).
Winter months (Nov–Mar) carry 25.7% of truck crashes, vs 43.8% for Washington.
More truck crashes happen at 7–8 am than at any other hour (13.9%).
Road surface: 8.6% of truck crashes were on snow, slush or ice (Washington: 9.7%).
Where crashes happen
Fatal large-truck crashes within 10 miles of ZIP 99328 since 2015 were spread across roads: US-12 (1).
Garbage & waste trucks
Garbage and refuse trucks were involved in 1 crash, 2.8% of the total, against 2.2% across Washington.
Route planning tips for ZIP 99328 fleets
- Build extra time into August routes: it has the most truck crashes here.
- The morning rush (6–10 am) holds 28.6% of truck crashes here, more than Washington; adjust start times where you can.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Columbia County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| US-12 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Columbia County) |
|---|---|
| Sr-12*366.00 | 2 |
| Sr-12*377.00 | 2 |
| E Main St Blk 400 | 1 |
| Main St/Tucannon St | 1 |
| Payne Hollow/Harting Grade | 1 |
| Sr-12*360.00 | 1 |
| Sr-12*360.20 | 1 |
| Sr-12*361.10 | 1 |
ZIP 99328 at a glance
| Population | 3,646 |
| Density | 2 per sq mi |
| Median household income | $72,756 |
| Median home value | $270,659 |
| Home ownership | 77% |
Waste facilities and haulers nearby
Historical data: truck crashes in Columbia 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 | 3 | — | 0.2 |
| 2000s | 2 | -43% | 0.2 |
| 2010s | 4 | +129% | 0.1 |
| 2020s | 2 | -36% | 0.0 |
Reported truck crashes averaged 3 a year in the 1990s and 2 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal large-truck crashes: 0.2 a year in 2016–19, 0.0 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 99328
How many truck accidents are there in ZIP 99328?
Since 2015, 36 crashes involving commercial trucks were reported in Columbia County (8 injured, 1 killed).
Which month has the most truck crashes in ZIP 99328?
Truck crashes in Columbia County peak in August, with 22.2% of the year's crashes.
How many garbage truck crashes are there in ZIP 99328?
1 crash involving garbage or refuse trucks have been reported in Columbia County since 2015, 2.8% of all truck crashes.
What is the truck crash rate in ZIP 99328 compared with Washington?
The yearly rate is 79.1 truck crashes per 100,000 residents in Columbia County, vs 25.8 for Washington.
How do I plan a garbage truck route in ZIP 99328?
Paste your stops into the free CurbWaste Route Planner: it scores your route against fatal-crash locations, suggests safer alternatives and flags low bridges.
2026 is a partial year. Updated October 2026.