TagSR509(117)

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  • 2014-06-15

    Airport Key Map: Sea-Tac Airport Property Zones

    ★ 32
    This Airport Key Map, published by the Port of Seattle on June 15, 2014, provides a general reference overview of property zones surrounding Seattle-Tacoma International Airport. It identifies distinct areas including the Airfield, Terminal, Commercial, South of Airfield, South of 200th, and North of Airfield zones, and distinguishes between Port of Seattle property, lease boundaries, non-Port property, land available for redevelopment, and the proposed SR 509 corridor. The aerial photo, taken in Spring 2012, is intended for general reference only and is not approved for navigation use.
  • 2002-01-01

    SR 509: Corridor Completion/I-5/South Access Road revised draft environmental impact statement and draft Section 4(f) evaluation

    ★ 32
    This January 2002 Revised Draft Environmental Impact Statement evaluates proposed improvements to SR 509 and I-5 in southwest King County, Washington, including a freeway extension to enhance southern access to Seattle-Tacoma International Airport. The study, prepared jointly by the Federal Highway Administration, WSDOT, Port of Seattle, King County, and the Cities of SeaTac and Des Moines, examines three build alternatives and a no-action alternative, differing in their proximity to Des Moines Creek Park and the airport runway protection zone. The proposed SR 509 extension corridor would be a minimum of 200 feet wide to accommodate general purpose and high-occupancy vehicle lanes in each direction.
  • Puget sound gateway program – phase 1 of the sr 509 completion project environmental re evaluation page 343 cropped

    Puget Sound Gateway Program Phase 1 SR-509 Completion Project Environmental Re-Evaluation Map

    Map from the Puget Sound Gateway Program Phase 1 SR-509 Completion Project Environmental Re-Evaluation (page 343 cropped). Shows 2003 FEIS Alternative C2 and Phase 1 Improvements along I-5 corridor between S 272nd St and S 188th St in King County, Washington, covering Federal Way, Des Moines, SeaTac, Burien, Kent, and Tukwila. Documents interchange configurations (Full
  • Puget sound gateway program – phase 1 of the sr 509 completion project environmental re evaluation page 342 1

    Puget sound gateway program – phase 1 of the sr 509 completion project environmental re evaluation page 342 1

    This January 2018 environmental re-evaluation examines the potential impacts of Phase 1 of the SR 509 Completion Project, part of the Puget Sound Gateway Program, prepared for the Federal Highway Administration and Washington State Department of Transportation. The document assesses changed conditions and effects across multiple environmental categories—including noise, air quality, water quality, wetlands, and transportation—comparing the current project phase against the 2003 Final Environmental Impact Statement's preferred alternative. Notably, the noise section evaluates both operational and construction-phase sound impacts on surrounding communities, making it a relevant reference for research into transportation-related noise policy near Sea-Tac Airport.
  • Puget sound gateway program – phase 1 of the sr 509 completion project environmental re evaluation page 343

    Puget sound gateway program – phase 1 of the sr 509 completion project environmental re evaluation page 343

    This January 2018 environmental re-evaluation examines the potential impacts of Phase 1 of the SR 509 Completion Project, part of the Puget Sound Gateway Program, prepared for the Federal Highway Administration and Washington State Department of Transportation. The document assesses changed conditions and effects across multiple environmental categories—including noise, air quality, water quality, wetlands, and transportation—comparing the current project phase against the 2003 Final Environmental Impact Statement's preferred alternative. Notably, the noise section evaluates both operational and construction-phase sound impacts on surrounding communities, making it a relevant reference for research into transportation-related noise policy near Sea-Tac Airport.
  • Puget sound gateway program – phase 1 of the sr 509 completion project environmental re evaluation page 342

    Puget sound gateway program – phase 1 of the sr 509 completion project environmental re evaluation page 342

    This January 2018 environmental re-evaluation examines the potential impacts of Phase 1 of the SR 509 Completion Project, part of the Puget Sound Gateway Program, prepared for the Federal Highway Administration and Washington State Department of Transportation. The document assesses changed conditions and effects across multiple environmental categories—including noise, air quality, water quality, wetlands, and transportation—comparing the current project phase against the 2003 Final Environmental Impact Statement's preferred alternative. Notably, the noise section evaluates both operational and construction-phase sound impacts on surrounding communities, making it a relevant reference for research into transportation-related noise policy near Sea-Tac Airport.
  • 2025-11-19

    Highline Forum Agenda: November 19, 2025 — Transportation Updates

    The Highline Forum held its November 19, 2025 meeting at the City of SeaTac Council Chambers, hosted by the City of Des Moines, with a focus on transportation updates including presentations from WSDOT on the SR 509 project, Sound Transit, and a StART update from the Port of Seattle. The forum, co-chaired by Port of Seattle Commissioner Sam Cho, also covered local transportation roundtable discussions and planning for 2026 co-chair roles and meeting schedules. The 2026 meeting calendar lists six bimonthly sessions, with the first scheduled for January 28, 2026 at Port of Seattle's SEA Airport facility.
  • 2025-11-19

    Puget Sound Gateway Program SR 509 Completion Project

    WSDOT presentation on the Puget Sound Gateway Program, focusing on the SR 509 Completion Project. The program includes two projects (SR 167 and SR 509) to provide essential connections to the ports of Tacoma and Seattle, with various stages of construction progress.
  • 2025-09-30

    HCM Signalized Intersection Capacity Analysis: SR 509 SB Ramps, NB SR 509 Ramps, and Des Moines Way S at S 128th St — 2032 No Action PM Peak

    This traffic engineering report analyzes three signalized intersections along S 128th Street near SR 509 in the Sea-Tac area under projected 2032 No Action conditions during the PM peak hour. The study finds that the SR 509 ramp intersections are operating well over capacity, with an Intersection Capacity Utilization of 104.6% and an ICU Level of Service G, while the Des Moines Way S intersection operates more acceptably at 63.3% ICU. Overall intersection control delays range from approximately 19 to 27 seconds, with most approaches functioning at Level of Service B or C.
  • 2025-01-01

    City of Burien 2025 Federal Agenda

    The City of Burien's 2025 Federal Agenda outlines the city's lobbying priorities, including a strong focus on reducing the impact of Seattle-Tacoma International Airport on surrounding communities. Key airport-related goals include supporting the FAA Reauthorization Act to reduce airport noise and emissions, conducting a new SEA-TAC noise study, and securing funding from the Port of Seattle for airport-impacted communities. The agenda also addresses broader city priorities such as infrastructure funding, environmental initiatives, public safety, and housing policy.