WSDOT opens section of new SR 509 Expressway in SeaTac June 28
Washington State Department of Transportation sent this bulletin at 06/27/2025 11:00 AM PDT
06/25/2025 01:04 AM PDT
SEATAC – The first section of a new expressway is about to open in the Puget Sound area, providing travelers with another commuting option in south King County.
At 5:09 a.m. on Saturday, June 28, the Washington State Department of Transportation will open the first mile of the State Route 509 Expressway. The first mile of the SR 509 Completion Project stretches between Interstate 5 and 24th Avenue South in SeaTac
At 5:09 a.m. on Saturday, June 28, the Washington State Department of Transportation will open the first mile of the State Route 509 Expressway. The first mile of the SR 509 Completion Project stretches between Interstate 5 and 24th Avenue South in SeaTac
