The Port of Seattle filed an environmental checklist in May 2021 for a project to widen Arrivals Drive at Seattle-Tacoma International Airport (SEA) from two lanes to four lanes, aiming to reduce congestion and improve safety for passengers and ground transportation vehicles. Construction was planned to begin in mid-2023 and last approximately 18 months, involving road realignments, updated stormwater drainage, new LED lighting, and utility relocations. The project was designed as a standalone improvement but coordinated with broader airport master plan efforts to accommodate potential future infrastructure expansions at SEA.Open full document
Notes
This environmental checklist (SEPA File No. 21-04) was prepared by the Port of Seattle for the Widen Arrivals Drive Project at Seattle-Tacoma International Airport. The project proposes to widen Arrivals Drive from two to four lanes, realign Air Cargo Road and Departures Drive, and install supporting infrastructure to reduce congestion and improve safety. Construction was planned to begin in mid-2023 and take approximately 18 months to complete.