ZIP 98038 (Maple Valley, WA) truck route planning & crash data
Plan safer truck routes around ZIP 98038: commercial truck and garbage truck crashes here and in King 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
0.6 deaths per 100 garbage-truck crashes vs 2.6 for all trucks.
Deadliest roads
How King County compares with Washington
King County against Washington and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where King County stands out
Full comparison
| Measure (2015–2025) | King County | Washington | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 22.1 | 25.8 | 49.7 | 14% below the state |
| Deaths per 100 crashes | 2.6 | 3.4 | 3.4 | 24% below the state |
| Injuries per crash | 0.17 | 0.18 | 0.49 | same |
| Garbage-truck share | 2.9% | 2.2% | 2.3% | 1.3× the state |
| On snow, slush or ice | 4.3% | 9.7% | 6.2% | 56% below the state |
| Morning rush (6–10 am) | 24.8% | 24.8% | 23.7% | same |
| In rain, sleet or snow | 21.5% | 20.2% | 13.8% | same |
| Winter months (Nov–Mar) | 41.5% | 43.8% | 41.9% | same |
| After dark | 23.9% | 25.2% | 24.8% | same |
Compared with Washington, King County is lower on crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice. It runs above Washington on garbage-truck share.
The headline for ZIP 98038: SR-18 deadliest road: 5 fatal truck crashes within 10 miles of ZIP 98038 since 2015.
Overview
Police reported 6,019 crashes involving commercial trucks in King County since 2015: 1,063 people were injured and 156 were killed.
That averages about 1 truck crash a day in fully reported years.
When crashes happen
Truck crashes peak in October (9.3% of the year) and are lowest in May (7.4%).
Winter months (Nov–Mar) carry 41.5% of truck crashes, vs 43.8% for Washington.
The busiest hour is 12–1 pm, with 7.4% of truck crashes.
Snow, slush or ice was on the road in 4.3% of truck crashes, compared with 9.7% in Washington.
Where crashes happen
Within this area, SR-18 had the most fatal crashes involving a large truck since 2015 (5). Next come SR-169 (2), CR-SE May Valley Rd (1) and I-90 (1).
Garbage & waste trucks
Garbage trucks account for 180 of the truck crashes here, or 3.0%, compared with 2.2% in Washington.
Garbage-truck crashes peak in April (12% of them).
Deaths per 100 garbage-truck crashes: 0.6, vs 2.6 for all truck crashes.
Route planning tips for ZIP 98038 fleets
- Build extra time into October routes: it has the most truck crashes here.
- Check whether your routes use SR-18, the road with the most fatal truck crashes in this area.
- Waste haulers: April is the peak month for garbage-truck crashes in King County.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 King County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-18 | 5 |
| SR-169 | 2 |
| CR-SE May Valley Rd | 1 |
| I-90 | 1 |
| SR-018 | 1 |
| SR-900 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (King County) |
|---|---|
| Sr-167*026.00 | 24 |
| Sr-167*024.00 | 23 |
| Sr-167*014.00 | 22 |
| Sr-18*026.30 | 19 |
| Sr-167*019.00 | 18 |
| Sr-18*002.00 | 18 |
| Sr-18*001.00 | 17 |
| Sr-18*003.00 | 16 |
ZIP 98038 at a glance
| Population | 37,324 |
| Density | 219 per sq mi |
| Median household income | $152,261 |
| Median home value | $775,333 |
| Home ownership | 86% |
Waste facilities and haulers nearby
Historical data: truck crashes in King 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 | 330 | — | 10.3 |
| 2000s | 344 | +4% | 8.0 |
| 2010s | 451 | +31% | 7.2 |
| 2020s | 523 | +16% | 14.6 |
Reported truck crashes averaged 330 a year in the 1990s and 523 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal large-truck crashes: 10.0 a year in 2016–19, 14.6 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 98038
How common are truck crashes in ZIP 98038?
King County has had 6,019 reported truck crashes since 2015, injuring 1,063 people and killing 156.
Where do fatal truck crashes happen most in ZIP 98038?
Since 2015, SR-18 has had the most fatal large-truck crashes within 10 miles of ZIP 98038: 5.
Which month has the most truck crashes in ZIP 98038?
Truck crashes in King County peak in October, with 9.3% of the year's crashes.
Are garbage truck crashes common in ZIP 98038?
Since 2015, King County has reported 180 garbage-truck crashes, or 3.0% of its truck crashes.
What is the truck crash rate in ZIP 98038 compared with Washington?
The yearly rate is 22.1 truck crashes per 100,000 residents in King County, vs 25.8 for Washington.
What is the best way to plan truck routes in ZIP 98038?
The free Route Planner takes your stops and returns a route risk score, safer alternatives and low-bridge warnings.
2026 is a partial year. Updated October 2026.