AECOM Selected as Designer for Portage Bay Bridge Replacement

AECOM, an infrastructure consulting firm, will serve as the lead designer for the Washington State Department of Transportation’s SR 520 Portage Bay Bridge and Roanoke Lid Project as part of a design-build team led by Skanska. The project calls for replacing the existing Portage Bay Bridge and creating a landscaped lidded segment in Seattle’s North Capitol Hill neighborhood.

Once complete, commuters across Lake Washington and through the SR 520 corridor will have access to new ramps, seismically resilient structures and improved connections to transit, local streets, and local and regional shared-use trails.

“We are excited to continue building on our decades-long relationship with the WSDOT, supporting the critical infrastructure needs of one of the Puget Sound region’s busiest highway corridors,” said Matt Crane, chief executive of AECOM’s U.S. West region.

AECOM will oversee the technical design of two new parallel bridges—one for eastbound traffic and the other for westbound—that replace the 1960s-era Portage Bay Bridge with a seismically stronger structure. The project will also build a landscaped lid over SR 520 between 10th Avenue East and Delmar Drive East and improve regional mobility by completing the SR 520 Program’s transit and HOV enhancements between Redmond and Seattle.