The SR 518 Corridor Planning Study, published by the Washington State Department of Transportation (WSDOT) in May 2020, examines the stretch of State Route 518 running from SR 509 to Interstate 5 (milepost 0.00 to 3.42) in the Seattle area near Sea-Tac Airport. The study was conducted by WSDOT's Management of Mobility Division to evaluate transportation conditions and identify potential improvements along this key corridor. It was formally approved by WSDOT leadership in November 2019 and includes standard civil rights and accessibility notices in both English and Spanish.Open full document
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WSDOT Management of Mobility Division SR 518 Corridor Planning Study covering MP 0.00 to MP 3.42, from SR 509 to I-5, published May 2020. Study approved by Patty Rubstello (Assistant Secretary, Urban Mobility and Access), Mike Cotten (Administrator, Northwest Region), and Kerri Woehler (Director, Multimodal Planning) in November 2019. Includes Title VI Civil Rights Act non-discrimination notice, ADA accessibility information, and 23 U.S. Code § 148 and § 409 crash data disclaimer.