Northbound HOV3Transit I-5 express lanes entrance at Mercer Street in Seattle opens May 12
The Washington State Department of Transportation will open a new entrance for northbound high occupancy vehicle (HOV3+) and transit I-5 express lanes at Mercer Street on May 12. This change allows HOV3+ vehicles to access express lanes from the left side, enhancing connectivity to State Route 520. The entrance supports the SR 520/I-5 Express Lanes Connection Project, which aims to improve traffic flow for designated vehicles.