Maple Valley, WA truck route planning & crash data
Plan safer truck routes in Maple Valley: commercial truck and garbage truck crashes in Maple Valley and King County, dangerous roads, seasonality and route safety data for fleets. Patterns use King County numbers.
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 |
King County has lower values than Washington for crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice. It stands out for higher garbage-truck share.
The headline for Maple Valley: SR-169 3 fatal truck crashes since 2015, more than any other road within 10 miles of Maple Valley.
Overview
Since 2015, 6,019 crashes involving commercial trucks have been reported in King County. They injured 1,063 people and killed 156.
That averages about 1 truck crash a day in fully reported years.
With 70 truck crashes reported in Maple Valley since 2015, this page uses King County numbers for its patterns and comparisons.
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-169 had the most fatal crashes involving a large truck since 2015 (3). Next come SR-167 (2), SR-18 (2) and SR-516 (2).
Garbage & waste trucks
Garbage and refuse trucks were involved in 180 crashes, 3.0% of the total, against 2.2% across Washington.
Garbage-truck crashes peak in April (12% of them).
Per 100 crashes, garbage trucks recorded 0.6 deaths compared with 2.6 for all trucks.
Route planning tips for Maple Valley fleets
- Build extra time into October routes: it has the most truck crashes here.
- Check whether your routes use SR-169, 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.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
About the data
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
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-169 | 3 |
| SR-167 | 2 |
| SR-18 | 2 |
| SR-516 | 2 |
| 4th St Se | 1 |
| B St Nw | 1 |
| CR-AUBURN Black Diamond Rd | 1 |
| CR-SE Auburn Black Diamond | 1 |
| CR-SE May Valley Rd | 1 |
| Olympic Ct Se | 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 |
Maple Valley at a glance
| Population | 28,553 |
| Land area | 6.0 sq mi |
| Density | 4,756 per sq mi |
| Median household income (ZIP 98042) | $127,552 |
| Median home value (ZIP 98042) | $655,883 |
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 places
Questions fleets ask about Maple Valley
How many truck crashes happen in Maple Valley?
6,019 truck crashes have been reported in King County since 2015, with 156 deaths and 1,063 injuries.
Which road has the most fatal truck crashes in Maple Valley?
SR-169 had 3 fatal crashes involving a large truck within 10 miles of Maple Valley since 2015, more than any other road.
Which month has the most truck crashes in Maple Valley?
The worst month is October: 9.3% of truck crashes in King County happen then.
How many garbage truck crashes are there in Maple Valley?
Garbage trucks were involved in 180 reported crashes in King County since 2015 (3.0% of truck crashes).
How does Maple Valley compare with Washington for truck crashes?
King County records 22.1 truck crashes per 100,000 residents a year, against 25.8 across Washington.
What is the best way to plan truck routes in Maple Valley?
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.