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The SR 167 and SR 509 extensions will complete the missing highway system links to I-5 that offer commuter and freight mobility benefits through added capacity and improved connectivity.
The SR 167 Completion Project will build the remaining four miles of SR 167 between Meridian and I-5, completing a long-planned connection to I-5. The project also includes a two-mile connection from I-5 to the Port of Tacoma.
The SR 509 Completion Project will extend SR 509 to I-5 near Tukwila add a southern access point to Sea-Tac International Airport, and improve service between industrial districts by allowing general purpose traffic and trucks to bypass I-5, SR 99, and local streets.