RoadworksMinor
Construction on 405 southbound
405 at milepost 4.17
...
The SR 169 on-ramp to southbound I-405 will be closed overnight, 10 p.m. Wednesday, Sept. 2 – 4:30 a.m. Thursday, Sept. 3. A signed detour will be in place.
ReportedSeptember 2, 2026 at 12:00 AM PDTSeptember 3, 2026 at 04:30 AM PDT
Road
405
Source
WSDOT
Coordinates
47.48585, -122.19495
Roadworks details
Direction
S