States › Oregon › Routes › State Route 99W
State Route 99W
Fatal crashes 2015–2024 37Deaths 39Counties 6Latest data year 2024
FARS data are based on police crash reports and other sources; the drunk-driving measure is based on the highest BAC of any driver in the crash. Latest data year: 2024. The route is the trafficway recorded for each crash (FARS TWAY_ID); the same route number in another state has its own page.
State Route 99W in Oregon was the trafficway in 37 fatal crashes between 2015 and 2024, in which 39 people died.
That is 0.8% of the 4,753 fatal crashes in Oregon over the same years. The ten-year crash count rose 76% from 21 in 2005–2014 to 37 in 2015–2024.
The crashes were concentrated in Benton County (14), Yamhill County (8) and Washington County (5) and 3 other counties.
16.2% of the crashes had a driver reported as drinking (Oregon: 31.0%) and 13.5% had a speeding-related driver (30.1%); pedestrians were 10.3% and motorcyclists 2.6% of those killed.
Fatal crashes per year
Route identification in FARS is consistent from 2000; earlier years are not shown. Shaded band: the ten-year window used for the shares below.
Compared with all fatal crashes in Oregon
| Measure | State Route 99W | Oregon |
|---|---|---|
| Fatal crashes, 2015–2024 | 37 | 4,753 |
| Deaths, 2015–2024 | 39 | 5,211 |
| Deaths per fatal crash | 1.1 | 1.1 |
| Share of state fatal crashes | 0.8% | 100% |
| Change vs previous ten years | +76% | +36% |
Factor shares
Counties along the route
| # | County | Fatal crashes on SR-99W | Share of route | County total, all roads |
|---|---|---|---|---|
| 1 | Benton County | 14 | 38% | 79 |
| 2 | Yamhill County | 8 | 22% | 111 |
| 3 | Washington County | 5 | 14% | 275 |
| 4 | Lane County | 4 | 11% | 421 |
| 5 | Polk County | 4 | 11% | 105 |
| 6 | Multnomah County | 2 | 5% | 652 |
Hour of day
Share of fatal crashes on State Route 99W beginning in each hour, 2015–2024; tick marks the Oregon share for all roads.
Where along the route
| Mile marker range | Fatal crashes | Share |
|---|---|---|
| Mile 5–10 | 6 | 16% |
| Mile 35–40 | 4 | 11% |
| Mile 95–100 | 4 | 11% |
| Mile 75–80 | 3 | 8% |
| Mile 70–75 | 2 | 5% |
| Mile 80–85 | 2 | 5% |
Five-mile bins by FARS milepoint, the six with the most fatal crashes; 97.3% of crashes on the route have a milepoint. Milepoints are as recorded by the state and can restart at county or district lines.
Other routes in Oregon
- Interstate 5 212
- US Route 101 209
- US Route 26 165
- State Route 99 160
- Interstate 84 160
- US Route 97 156
- US Route 20 150
- US Route 30 84
- State Route 126 65
- State Route 22 64
- State Route 99E 54
- State Route 18 47
All routes and counties in Oregon
Questions and answers
How many fatal crashes have there been on State Route 99W in Oregon?
37 fatal crashes with 39 deaths over 2015–2024, per NHTSA's FARS. The route is the trafficway recorded for the crash; the same numbered route in another state has its own page.
Which counties along State Route 99W had the most fatal crashes?
Benton County (14), Yamhill County (8), Washington County (5), Lane County (4) and Polk County (4).
What share of crashes on State Route 99W involved alcohol or speeding?
16.2% had a driver reported as drinking and 13.5% a speeding-related driver, against 31.0% and 30.1% for all fatal crashes in Oregon.
When do fatal crashes happen on State Route 99W?
35.1% of the crashes were between 6pm and 6am. The hour chart on this page shows the full distribution.
Provenance
Source: NHTSA Fatality Analysis Reporting System, annual national CSV files 2000–2024 (accident, vehicle and person tables), public domain. Route pages are built for signed Interstate, US and state routes with at least 20 fatal crashes in 2015–2024. Data through 31 Dec 2024; generated 30 Sep 2026. See methodology and corrections.