PSRC’s Executive Board may give final approval to the west approach of the SR 520 Bridge Replacement project this week.
The Washington State Department of Transportation submitted a request to the board to change the status of the SR 520/I-5 to Lake Washington project from Conditionally Approved for Right of Way to Approved.
The project will reconstruct the SR 520 corridor from I-5 to the new Evergreen Point Floating Bridge. It includes highway lids in Seattle’s Montlake and Roanoke neighborhoods, the south half of a new west approach bridge, and a replacement Portage Bay Bridge and a second drawbridge over the Montlake Cut. The new structures will meet current design standards for earthquakes. The lane configuration of the new SR 520 will have six lanes including two HOV lanes, bicycle/pedestrian facilities, and the ability to accommodate future light rail.
The SR 520 project as a whole received Conditional Approval for Right of Way status in June 2004.
Connecting Washington, the transportation package adopted by the Legislature in 2015, provided the final $1.64 billion needed for the west approach, which fully funded the SR 520 Bridge Replacement project.
PSRC began funding the project with the original Trans-Lake Study in 1997.
WSDOT is preparing to begin the first phase of construction in 2018.