Mason County, WA truck route planning & crash data
Plan safer truck routes in Mason County: commercial truck and garbage truck crashes, 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
2 of 135 truck crashes since 2015.
Deadliest roads
How Mason County compares with Washington
Mason County against Washington and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Mason County stands out
Full comparison
| Measure (2015–2025) | Mason County | Washington | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 16.5 | 25.8 | 49.7 | 36% below the state |
| Deaths per 100 crashes | 8.7 | 3.4 | 3.4 | 2.6× the state |
| Injuries per crash | 0.25 | 0.18 | 0.49 | 1.4× the state |
| Garbage-truck share | 1.6% | 2.2% | 2.3% | 27% below the state |
| On snow, slush or ice | 8.7% | 9.7% | 6.2% | 10% below the state |
| Morning rush (6–10 am) | 29.4% | 24.8% | 23.7% | 1.2× the state |
| In rain, sleet or snow | 20.6% | 20.2% | 13.8% | same |
| Winter months (Nov–Mar) | 45.2% | 43.8% | 41.9% | same |
| After dark | 17.5% | 25.2% | 24.8% | 31% below the state |
Mason County sits below Washington on crashes per 100k residents / yr, garbage-truck share and on snow, slush or ice. Where it is higher: deaths per 100 crashes, injuries per crash and morning rush (6–10 am).
Mason County at a glance: 8.7 deaths for every 100 truck crashes, against 3.4 across Washington.
Overview
Police reported 135 crashes involving commercial trucks in Mason County since 2015: 34 people were injured and 11 were killed.
That averages about one truck crash every 32 days in fully reported years.
When crashes happen
The worst month is October with 13.3% of truck crashes; the quietest is May at 3.7%.
Winter months (Nov–Mar) carry 45.2% of truck crashes, vs 43.8% for Washington.
More truck crashes happen at 11 am–12 pm than at any other hour (11.1%).
Road surface: 8.7% of truck crashes were on snow, slush or ice (Washington: 9.7%).
Where crashes happen
US-101 leads in Mason County with 5 fatal crashes involving a large truck since 2015. Next come CR-NE Belfair Tahuya Rd (2), CR-E North Island Dr (1) and CR-E Pickering Rd (1).
Garbage & waste trucks
Garbage trucks account for 2 of the truck crashes here, or 1.5%, compared with 2.2% in Washington.
Route planning tips for Mason County fleets
- Plan October schedules with more margin; it is the worst month for truck crashes in Mason County.
- Check whether your routes use US-101, the road with the most fatal truck crashes in this area.
- Morning starts matter: 29.4% of truck crashes fall between 6 and 10 am, higher than Washington.
- 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 Mason County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (in Mason County) |
|---|---|
| US-101 | 5 |
| CR-NE Belfair Tahuya Rd | 2 |
| CR-E North Island Dr | 1 |
| CR-E Pickering Rd | 1 |
| CR-W Shelton Matlock Rd | 1 |
| SR-3 | 1 |
| SR-300 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Mason County) |
|---|---|
| Sr-101*329.00 | 3 |
| Sr-101*341.43 | 3 |
| Johns Prairie Rd Blk 1300 | 2 |
| Sr-101*319.70 | 2 |
| Sr-101*327.00 | 2 |
| Sr-101*332.00 | 2 |
| Sr-101*335.00 | 2 |
| Sr-101*340.00 | 2 |
Mason County at a glance
| Population | 69,632 |
| Land area | 959.6 sq mi |
| Density | 73 per sq mi |
| Median household income (ZIP average) | $83,912 |
Waste facilities and haulers nearby
Historical data: truck crashes in Mason 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 | 9 | — | 0.6 |
| 2000s | 9 | -2% | 1.0 |
| 2010s | 11 | +20% | 0.9 |
| 2020s | 12 | +16% | 1.6 |
In the 1990s about 9 truck crashes a year were reported; in the 2020s, about 12. Reporting coverage also changed between these periods. Fatal large-truck crashes: 0.8 a year in 2016–19, 1.6 a year in 2020–24.
Cities, towns & communities in Mason County
ZIP codes in Mason County
Nearby counties
Questions fleets ask about Mason County
How many truck crashes happen in Mason County?
Since 2015, 135 crashes involving commercial trucks were reported in Mason County (34 injured, 11 killed).
Which road has the most fatal truck crashes in Mason County?
Since 2015, US-101 has had the most fatal large-truck crashes in Mason County: 5.
What is the worst month for truck crashes in Mason County?
The worst month is October: 13.3% of truck crashes in Mason County happen then.
How many garbage truck crashes are there in Mason County?
Since 2015, Mason County has reported 2 garbage-truck crashes, or 1.5% of its truck crashes.
How do truck crashes in Mason County compare with Washington?
The yearly rate is 16.5 truck crashes per 100,000 residents in Mason County, vs 25.8 for Washington.
What is the best way to plan truck routes in Mason County?
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.