ZIP 99349 (Mattawa, WA) truck route planning & crash data
Plan safer truck routes around ZIP 99349: commercial truck and garbage truck crashes here and in Grant 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
11 of 852 truck crashes since 2015.
Deadliest roads
How Grant County compares with Washington
Grant County against Washington and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Grant County stands out
Full comparison
| Measure (2015–2025) | Grant County | Washington | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 70.8 | 25.8 | 49.7 | 2.7× the state |
| Deaths per 100 crashes | 6.4 | 3.4 | 3.4 | 1.9× the state |
| Injuries per crash | 0.25 | 0.18 | 0.49 | 1.4× the state |
| Garbage-truck share | 1.4% | 2.2% | 2.3% | 38% below the state |
| On snow, slush or ice | 13.7% | 9.7% | 6.2% | 1.4× the state |
| Morning rush (6–10 am) | 26.5% | 24.8% | 23.7% | same |
| In rain, sleet or snow | 9.0% | 20.2% | 13.8% | 56% below the state |
| Winter months (Nov–Mar) | 39.4% | 43.8% | 41.9% | 10% below the state |
| After dark | 22.9% | 25.2% | 24.8% | 9% below the state |
Compared with Washington, Grant County is lower on garbage-truck share, in rain, sleet or snow and winter months (nov–mar). Where it is higher: crashes per 100k residents / yr, deaths per 100 crashes and injuries per crash.
The headline for Grant County: 6.4 deaths for every 100 truck crashes, against 3.4 across Washington.
Overview
Since 2015, 852 crashes involving commercial trucks have been reported in Grant County. They injured 208 people and killed 57.
Across the years with complete reporting, that is roughly one truck crash every 5 days.
When crashes happen
The worst month is October with 13.8% of truck crashes; the quietest is June at 5.6%.
Winter months (Nov–Mar) carry 39.4% of truck crashes, vs 43.8% for Washington.
More truck crashes happen at 8–9 am than at any other hour (8.8%).
13.7% of truck crashes here happened on snow, slush or ice, against 9.7% across Washington.
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of ZIP 99349 happened on SR-24 (2), SR-243 (2) and CR-ROAD R Sw (1); no road leads clearly.
Garbage & waste trucks
Garbage and refuse trucks were involved in 11 crashes, 1.3% of the total, against 2.2% across Washington.
Route planning tips for ZIP 99349 fleets
- Review driver schedules for October, the month with the most truck crashes.
- 13.7% of truck crashes were on snow, slush or ice, above Washington; plan winter equipment checks before the season.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
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 Grant County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-24 | 2 |
| SR-243 | 2 |
| CR-ROAD R Sw | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Grant County) |
|---|---|
| Sr-283*004.00 | 7 |
| Sr-26*007.00 | 6 |
| Rd N Ne/S Frontage Rd | 5 |
| Sr-243*001.00 | 5 |
| Sr-243*001.50 | 5 |
| Sr-28*022.30 | 5 |
| Road U Se/I-90 Off Ramp | 4 |
| Sr-17*050.00 | 4 |
ZIP 99349 at a glance
| Population | 8,143 |
| Density | 12 per sq mi |
| Median household income | $61,333 |
| Median home value | $416,951 |
| Home ownership | 54% |
Waste facilities and haulers nearby
Historical data: truck crashes in Grant 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 | 39 | — | 2.2 |
| 2000s | 39 | +1% | 2.4 |
| 2010s | 64 | +63% | 2.6 |
| 2020s | 78 | +23% | 5.4 |
In the 1990s about 39 truck crashes a year were reported; in the 2020s, about 78. Reporting coverage also changed between these periods. Fatal crashes involving a large truck averaged 2.5 a year in 2016–19 and 5.4 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 99349
How many truck crashes happen in ZIP 99349?
Grant County has had 852 reported truck crashes since 2015, injuring 208 people and killing 57.
What is the worst month for truck crashes in ZIP 99349?
The worst month is October: 13.8% of truck crashes in Grant County happen then.
How many garbage truck crashes are there in ZIP 99349?
11 crashes involving garbage or refuse trucks have been reported in Grant County since 2015, 1.3% of all truck crashes.
How does ZIP 99349 compare with Washington for truck crashes?
The yearly rate is 70.8 truck crashes per 100,000 residents in Grant County, vs 25.8 for Washington.
How do I plan a garbage truck route in ZIP 99349?
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.