Notes
Commission Agenda Memorandum (Action Item 8d) from Eileen Francisco and Eric ffitch to Executive Director Stephen Metruck, dated October 18, 2022, requesting Port of Seattle Commission authorization for the Executive Director to execute a Memorandum of Understanding (MOU) with WSDOT supporting Stage 2 of the SR 509 Completion Project as part of the Puget Sound Gateway Program. Total estimated project cost is $30,050,000, comprising $15 million for the first phase (commitment no earlier than December 2023), up to $15 million for the second phase, and $50,000 in staff costs, per a 2020 Interlocal Agreement. The MOU governs design and construction requirements including runway protection zones, South 194th Street local access, Southern Airport Expressway (‘South Access’) forward compatibility, signage on South 188th Street, landscaping, maintenance of traffic, detention pond treatments, and South 200th Street property access. Stage 2 (SR 509/24th Avenue South to South 188th Street New Expressway Project) is the final stage, building two miles of new SR 509 Expressway, reconfiguring interchanges at South 188th and South 160th Streets, and adding a southbound auxiliary lane on I-5 between SR 516 and South 272nd Street; completion expected 2028. The Port is one of eighteen local agency partners in the 2018 Puget Sound Gateway Program MOU.