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The SR 520 Bridge Replacement and HOV Program is improving the highway corridor from I-5 in Seattle to I-405 in Bellevue.

SR 520’s old Evergreen Point Floating Bridge was vulnerable to failure during severe windstorms, and its old Portage Bay Bridge and bridge approaches are at risk of failure from earthquakes. Replacing these structures and improving other corridor features is critical to maintaining public safety and the integrity of Washington state’s transportation infrastructure.

Funding for the program is capped at $4.65 billion and includes replacing the floating bridge on Lake Washington, replacing the Portage Bay and west approach bridges, building transit, HOV and interchange improvements in Seattle and on the Eastside, and creating a regional, cross-lake bicycle and pedestrian path.

Details are online at Questions can be sent to