The SR 520 Bridge Replacement and HOV Program is rebuilding one of the Puget Sound region’s busiest highway corridors. We’re replacing vulnerable bridges, improving traffic safety, enhancing regional mobility and providing new and better options for nonmotorized travel. To keep traffic flowing during reconstruction, we are rebuilding SR 520 in stages – mainly from east to west.

For more information about the program, visit our official SR 520 webpage.