Jefferson County, WA truck route planning & crash data
Plan safer truck routes in Jefferson 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
3 of 136 truck crashes since 2015.
Deadliest roads
How Jefferson County compares with Washington
Jefferson County against Washington and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Jefferson County stands out
Full comparison
| Measure (2015–2025) | Jefferson County | Washington | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 34.5 | 25.8 | 49.7 | 1.3× the state |
| Deaths per 100 crashes | 4.7 | 3.4 | 3.4 | 1.4× the state |
| Injuries per crash | 0.32 | 0.18 | 0.49 | 1.8× the state |
| Garbage-truck share | 2.3% | 2.2% | 2.3% | same |
| On snow, slush or ice | 3.9% | 9.7% | 6.2% | 60% below the state |
| Morning rush (6–10 am) | 31.8% | 24.8% | 23.7% | 1.3× the state |
| In rain, sleet or snow | 21.7% | 20.2% | 13.8% | 1.1× the state |
| Winter months (Nov–Mar) | 43.4% | 43.8% | 41.9% | same |
| After dark | 17.8% | 25.2% | 24.8% | 29% below the state |
Jefferson County sits below Washington on on snow, slush or ice and after dark. It stands out for higher crashes per 100k residents / yr, deaths per 100 crashes and injuries per crash.
Jefferson County at a glance: February 15.4% of truck crashes happen in February, more than any other month.
Overview
Police reported 136 crashes involving commercial trucks in Jefferson County since 2015: 43 people were injured and 6 were killed.
In complete reporting years that works out to about one truck crash every 31 days.
When crashes happen
Truck crashes peak in February (15.4% of the year) and are lowest in November (3.7%).
Winter months (Nov–Mar) carry 43.4% of truck crashes, vs 43.8% for Washington.
More truck crashes happen at 9–10 am than at any other hour (12.5%).
Road surface: 3.9% of truck crashes were on snow, slush or ice (Washington: 9.7%).
Where crashes happen
The deadliest road for trucks in Jefferson County is SR-104, with 4 fatal large-truck crashes since 2015. It is followed by SR-20 (2), US-101 (2) and SR-19 (1).
Garbage & waste trucks
Garbage and refuse trucks were involved in 3 crashes, 2.2% of the total, against 2.2% across Washington.
Route planning tips for Jefferson County fleets
- Plan February schedules with more margin; it is the worst month for truck crashes in Jefferson County.
- Look at alternatives to SR-104 at busy times: it leads this area in fatal truck crashes.
- The morning rush (6–10 am) holds 31.8% of truck crashes here, more than Washington; adjust start times where you can.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
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 Jefferson County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (in Jefferson County) |
|---|---|
| SR-104 | 4 |
| SR-20 | 2 |
| US-101 | 2 |
| SR-19 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Jefferson County) |
|---|---|
| Sr-104*008.00 | 3 |
| Sr-20*006.25 | 3 |
| Sr-101*176.00 | 2 |
| Sr-101*280.00 | 2 |
| Sr-101*293.10 | 2 |
| Sr-101*301.00 | 2 |
| Sr-101*311.00 | 2 |
| Sr-104*013.76 | 2 |
Jefferson County at a glance
| Population | 33,944 |
| Land area | 1,803.7 sq mi |
| Density | 19 per sq mi |
| Median household income (ZIP average) | $73,853 |
Waste facilities and haulers nearby
Historical data: truck crashes in Jefferson 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 | 6 | — | 0.7 |
| 2000s | 7 | +27% | 0.9 |
| 2010s | 9 | +28% | 0.5 |
| 2020s | 12 | +27% | 1.0 |
From the 1990s to the 2020s, yearly reported truck crashes went from 6 to 12. Some of the change may reflect how crashes were reported. NHTSA counts 1.0 fatal large-truck crashes a year in 2016–19 and 1.0 a year in 2020–24.
Cities, towns & communities in Jefferson County
ZIP codes in Jefferson County
Nearby counties
Questions fleets ask about Jefferson County
How many truck accidents are there in Jefferson County?
Jefferson County has had 136 reported truck crashes since 2015, injuring 43 people and killing 6.
Which road has the most fatal truck crashes in Jefferson County?
NHTSA data shows SR-104 with 4 fatal large-truck crashes in Jefferson County since 2015, the highest of any road.
When do most truck crashes happen in Jefferson County?
February has the most truck crashes in Jefferson County, 15.4% of the yearly total.
How many garbage truck accidents happen in Jefferson County?
Since 2015, Jefferson County has reported 3 garbage-truck crashes, or 2.2% of its truck crashes.
What is the truck crash rate in Jefferson County compared with Washington?
The yearly rate is 34.5 truck crashes per 100,000 residents in Jefferson County, vs 25.8 for Washington.
How can I plan a safer truck route in Jefferson 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.