Mountlake Terrace, WA truck route planning & crash data
Plan safer truck routes in Mountlake Terrace: commercial truck and garbage truck crashes in Mountlake Terrace and Snohomish County, dangerous roads, seasonality and route safety data for fleets. Patterns use Snohomish County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
0.0 deaths per 100 garbage-truck crashes vs 3.7 for all trucks.
Deadliest roads
How Snohomish County compares with Washington
Snohomish County against Washington and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Snohomish County stands out
Full comparison
| Measure (2015–2025) | Snohomish County | Washington | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 14.4 | 25.8 | 49.7 | 44% below the state |
| Deaths per 100 crashes | 3.7 | 3.4 | 3.4 | 1.1× the state |
| Injuries per crash | 0.18 | 0.18 | 0.49 | same |
| Garbage-truck share | 3.3% | 2.2% | 2.3% | 1.5× the state |
| On snow, slush or ice | 3.1% | 9.7% | 6.2% | 68% below the state |
| Morning rush (6–10 am) | 25.0% | 24.8% | 23.7% | same |
| In rain, sleet or snow | 19.5% | 20.2% | 13.8% | same |
| Winter months (Nov–Mar) | 40.6% | 43.8% | 41.9% | 7% below the state |
| After dark | 20.6% | 25.2% | 24.8% | 18% below the state |
Compared with Washington, Snohomish County is lower on crashes per 100k residents / yr, on snow, slush or ice and winter months (nov–mar). Where it is higher: deaths per 100 crashes and garbage-truck share.
Snohomish County at a glance: 1 in 30 of truck crashes here involve garbage trucks: 3.3%, vs 2.2% in Washington.
Overview
Snohomish County has recorded 1,445 truck crashes since 2015, with 279 people injured and 53 killed.
That averages about one truck crash every 3 days in fully reported years.
With 52 truck crashes reported in Mountlake Terrace since 2015, this page uses Snohomish County numbers for its patterns and comparisons.
When crashes happen
Truck crashes peak in October (9.8% of the year) and are lowest in March (7.3%).
Winter months (Nov–Mar) carry 40.6% of truck crashes, vs 43.8% for Washington.
The busiest hour is 8–9 am, with 8.2% of truck crashes.
Snow, slush or ice was on the road in 3.1% of truck crashes, compared with 9.7% in Washington.
Where crashes happen
The deadliest road for trucks within 10 miles of Mountlake Terrace is SR-99, with 4 fatal large-truck crashes since 2015. After it: I-405 (3), I-5 (3) and Ne 130th St (1).
Garbage & waste trucks
48 crashes involved a garbage or refuse truck, a 3.3% share (Washington: 2.2%).
Their busiest month is April, with 12% of garbage-truck crashes.
Per 100 crashes, garbage trucks recorded 0.0 deaths compared with 3.7 for all trucks.
Route planning tips for Mountlake Terrace fleets
- Build extra time into October routes: it has the most truck crashes here.
- Look at alternatives to SR-99 at busy times: it leads this area in fatal truck crashes.
- For residential and commercial waste routes, look again at April schedules: garbage-truck crashes peak then.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
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 Snohomish County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-99 | 4 |
| I-405 | 3 |
| I-5 | 3 |
| Ne 130th St | 1 |
| Ne 175th St | 1 |
| SR-104 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Snohomish County) |
|---|---|
| Sr-9*000.20 | 4 |
| 84Th St Ne Blk 12300 | 3 |
| Hardeson Rd/Shuksan Way | 3 |
| I-405 Mp 025.00 | 3 |
| Sr-2*001.00 | 3 |
| Sr-530*016.95 | 3 |
| Sr-530*019.71 | 3 |
| Sr-532*006.45 | 3 |
Mountlake Terrace at a glance
| Population | 25,198 |
| Land area | 4.1 sq mi |
| Density | 6,213 per sq mi |
| Median household income (ZIP 98043) | $107,687 |
| Median home value (ZIP 98043) | $670,421 |
Waste facilities and haulers nearby
Historical data: truck crashes in Snohomish 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 | 78 | — | 4.2 |
| 2000s | 95 | +22% | 3.4 |
| 2010s | 111 | +17% | 2.2 |
| 2020s | 128 | +15% | 3.0 |
From the 1990s to the 2020s, yearly reported truck crashes went from 78 to 128. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 4.0 a year in 2016–19 and 3.0 a year in 2020–24.
Nearby places
Questions fleets ask about Mountlake Terrace
How many truck crashes happen in Mountlake Terrace?
Since 2015, 1,445 crashes involving commercial trucks were reported in Snohomish County (279 injured, 53 killed).
Where do fatal truck crashes happen most in Mountlake Terrace?
SR-99 had 4 fatal crashes involving a large truck within 10 miles of Mountlake Terrace since 2015, more than any other road.
What is the worst month for truck crashes in Mountlake Terrace?
October has the most truck crashes in Snohomish County, 9.8% of the yearly total.
Are garbage truck crashes common in Mountlake Terrace?
48 crashes involving garbage or refuse trucks have been reported in Snohomish County since 2015, 3.3% of all truck crashes.
What is the truck crash rate in Mountlake Terrace compared with Washington?
Per 100,000 residents, Snohomish County has 14.4 truck crashes a year; Washington has 25.8.
How do I plan a garbage truck route in Mountlake Terrace?
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.