ZIP 99346 (Plymouth, WA) truck route planning & crash data
Plan safer truck routes around ZIP 99346: commercial truck and garbage truck crashes here and in Benton 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
14 of 950 truck crashes since 2015.
Deadliest roads
How Benton County compares with Washington
Benton County against Washington and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Benton County stands out
Full comparison
| Measure (2015–2025) | Benton County | Washington | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 37.2 | 25.8 | 49.7 | 1.4× the state |
| Deaths per 100 crashes | 3.1 | 3.4 | 3.4 | 9% below the state |
| Injuries per crash | 0.16 | 0.18 | 0.49 | 11% below the state |
| Garbage-truck share | 1.6% | 2.2% | 2.3% | 28% below the state |
| On snow, slush or ice | 13.3% | 9.7% | 6.2% | 1.4× the state |
| Morning rush (6–10 am) | 20.4% | 24.8% | 23.7% | 18% below the state |
| In rain, sleet or snow | 11.1% | 20.2% | 13.8% | 45% below the state |
| Winter months (Nov–Mar) | 44.6% | 43.8% | 41.9% | same |
| After dark | 30.5% | 25.2% | 24.8% | 1.2× the state |
Benton County sits below Washington on deaths per 100 crashes, injuries per crash and garbage-truck share. Where it is higher: crashes per 100k residents / yr, on snow, slush or ice and after dark.
The headline for ZIP 99346: SR-14 3 fatal truck crashes since 2015, more than any other road within 10 miles of ZIP 99346.
Overview
Since 2015, 950 crashes involving commercial trucks have been reported in Benton County. They injured 160 people and killed 32.
In complete reporting years that works out to about one truck crash every 4 days.
When crashes happen
Truck crashes peak in January (10.4% of the year) and are lowest in March (5.8%).
November through March accounts for 44.6% of truck crashes here, compared with 43.8% in Washington.
By time of day, 2–3 pm stands out with 7.1% of truck crashes.
Road surface: 13.3% of truck crashes were on snow, slush or ice (Washington: 9.7%).
Where crashes happen
SR-14 leads within 10 miles of ZIP 99346 with 3 fatal crashes involving a large truck since 2015. After it: US-730 (2), CR-S Plymouth Rd (1) and I-82 (1).
Garbage & waste trucks
Garbage and refuse trucks were involved in 14 crashes, 1.5% of the total, against 2.2% across Washington.
Route planning tips for ZIP 99346 fleets
- Build extra time into January routes: it has the most truck crashes here.
- Look at alternatives to SR-14 at busy times: it leads this area in fatal truck crashes.
- Icy and snowy roads show up in 13.3% of truck crashes here, more than Washington; schedule winter checks early.
- 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 Benton County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-14 | 3 |
| US-730 | 2 |
| CR-S Plymouth Rd | 1 |
| I-82 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Benton County) |
|---|---|
| Sr-395*018.00 | 8 |
| Sr-240*033.90 | 6 |
| Sr-240*043.00 | 5 |
| Sr-395*014.00 | 5 |
| Sr-395*018.60 | 5 |
| Sellards Road/Travis Road | 4 |
| Sr-14*160.90 | 4 |
| Sr-14*167.25 | 4 |
ZIP 99346 at a glance
| Population | 198 |
| Density | 0 per sq mi |
| Median household income | $50,865 |
| Median home value | $228,102 |
| Home ownership | 95% |
Waste facilities and haulers nearby
Historical data: truck crashes in Benton 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 | 28 | — | 1.9 |
| 2000s | 44 | +54% | 1.3 |
| 2010s | 64 | +47% | 1.8 |
| 2020s | 87 | +35% | 3.0 |
In the 1990s about 28 truck crashes a year were reported; in the 2020s, about 87. Reporting coverage also changed between these periods. NHTSA counts 1.8 fatal large-truck crashes a year in 2016–19 and 3.0 a year in 2020–24.
Nearby ZIP codes
Questions fleets ask about ZIP 99346
How many truck accidents are there in ZIP 99346?
Since 2015, 950 crashes involving commercial trucks were reported in Benton County (160 injured, 32 killed).
Which road has the most fatal truck crashes in ZIP 99346?
SR-14 had 3 fatal crashes involving a large truck within 10 miles of ZIP 99346 since 2015, more than any other road.
Which month has the most truck crashes in ZIP 99346?
January has the most truck crashes in Benton County, 10.4% of the yearly total.
Are garbage truck crashes common in ZIP 99346?
Garbage trucks were involved in 14 reported crashes in Benton County since 2015 (1.5% of truck crashes).
How do truck crashes in ZIP 99346 compare with Washington?
Benton County records 37.2 truck crashes per 100,000 residents a year, against 25.8 across Washington.
How can I plan a safer truck route in ZIP 99346?
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.