SR 520 Westbound
- Update 11:38 AM : On the SR 520 westbound on-ramp from W Lake Sammamish Pkwy (MP 12) there is a collision blocking the HOV lane. Fire Assistance, the Incident Response Team, and the State Patrol have arrived on the scene.
Last Updated: 9/25/2021 11:38 AM
At milepost 12