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September 3, 2025

SR-509 Expressway tolls start Sept. 29

By JOURNAL STAFF

SEATAC — Drivers using the state Route 509 Expressway in SeaTac between Interstate 5 and 24th Avenue South will have to pay for their ride starting at 5 a.m. on Sept. 29.

The first mile of the expressway opened on June 28 but was free to drivers for the summer. Two additional miles of the expressway, extending SR-509 from where it currently ends at South 188th Street to 24th Avenue South in SeaTac, are expected to open in 2028.


 
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