West Seattle and Ballard Link Extensions

The West Seattle and Ballard Link Extensions are part of the regional ST3 package that voters approved in November 2016. These separate extensions will provide fast, reliable light rail connections to residential and job centers between West Seattle and Ballard.

  • 7.1 miles of light rail service from downtown Seattle to Ballard’s Market Street area, including a new downtown Seattle rail-only tunnel.
  • Ballard to Westlake in 15 minutes.
  • 9 light rail stations (7 new and 2 expanded) between International District/Chinatown and Market Street.
  • Representative project runs through tunneled and elevated sections with a rail-only movable bridge over Salmon Bay.
  • Open for service in 2035.
  • 4.7 miles of light rail service from downtown Seattle to West Seattle’s Alaska Junction neighborhood.
  • West Seattle to SODO in 10 minutes.
  • 5 light rail stations (3 new and 2 expanded) between the Stadium area and Alaska Junction.
  • Representative project runs primarily on an elevated guideway with a new rail-only fixed span crossing the Duwamish River.
  • Open for service in 2030.

West Seattle and Ballard Link Extensions representative project map A map displaying the representative project transit mode, route and general station locations per the Sound Transit 3 Plan. The Ballard Extension will add 7.1 miles of light rail service from downtown Seattle to Ballard’s Market Street area, including a new downtown Seattle rail-only tunnel. 2 existing stations will be expanded, and 7 new light rail stations will be added between International District/Chinatown and Market Street. The 7 new stations are recommended at Denny, South Lake Union and Seattle Center along Denny Way; Smith Cove along Elliot Ave West; Interbay and Market Street along 15th Avenue West. Riders will be able to travel from Ballard to Westlake in 15 minutes. The West Seattle Extension will add 4.7 miles of light rail service from downtown Seattle to West Seattle’s Alaska Junction neighborhood. 2 existing stations will be expanded, and 3 new light rail stations will be added between the Stadium area and Alaska Junction. The 3 new stations are recommended at Delridge, Avalon and Alaska Junction. Riders will be able to travel from West Seattle to SODO in 10 minutes. Lake Union Elliott Bay West Seattle Bridge Denny Way Yesler Way SW Alaska St W Dravus St 15th Ave W Elliott Ave SW Madison St NW Market St Ballard to downtown Seattle West Seattle to downtown Seattle 2030 2035 Salmon Bay Crossing(MOVABLE BRIDGE) DuwamishWaterway Crossing(FIXED STRUCTURE) Stadium SODO Delridge Avalon Alaska Junction South Lake Union Int’l District/Chinatown Westlake Denny Midtown SeattleCenter Smith Cove Interbay Ballard (2035) (2030) ElevatedNew downtown tunnel ElevatedSurface To Everett (2036)To Tacoma Dome (2030)To Lynnwood/Redmond (2024) Ballard extension Link Light Rail West Seattle extension Current/future service Station areaMajor transfer hub Representative project showing transit mode, route and general station locations per ST3 Plan.

Project schedule

A graphic depicting the project schedule. An accessible version can be found by following the link below. START OFSERVICE West Seattle: 2030Ballard: 2035 PUBLIC INVOLVEMENT / TESTING Conversations with property ownersGroundbreakingConstruction updates and mitigationSafety educationTesting and preoperations CONSTRUCTION2025–2035* PUBLIC INVOLVEMENT Final route designFinal station designsProcure and commission station and public artObtain land use and construction permits DESIGN2022–2026* PUBLIC INVOLVEMENT Alternatives development2017–2019Early scopingScopingST Board identifies preferrred alternativeEnvironmental Review2019–2022Draft Environmental Impact StatementFinal Environmental Impact StatementST Board selects project to be builtFederal Record of Decision PLANNING2017–2022 Voterapproval 2016 *West Seattle: Design is expected to begin in 2022 and be completed in 2025, Construction and testing is expected to begin in 2025 and be completed in 2030.Ballard and downtown Seattle Light Rail Tunnel: Design is expected to begin in 2023 and be completed in 2026, Construction and testing is expected to begin in 2027 and be completed in 2035. We are here West Seattle and Ballard Link Extensions The Decision-making Process Sound Transit plans, builds, and operates regional transit systems and services to improve mobility for Central Puget Sound.401 S. Jackson St. l Seattle, WA 98104-2826 l 1-800-201-4900 / TTY Relay: 711 l wsblink@soundtransit.org l soundtransit.org

Accessible version

We heard you… "Build it quickly"

Public input provided during the development of ST3 underscored the importance of getting light rail extensions in service as fast as possible. To be efficient, we need your input to help the Sound Transit Board identify a preferred alternative early so we can start construction sooner.

comment bubble iconWe want your help

Your thoughts over the next 18 months will be important in helping the Sound Transit Board, after working with stakeholder groups and the community, determine what route alignments and station locations to study in the project Environmental Impact Statement (EIS). The final selection of the project to be built will be made by the Sound Transit Board after the final EIS.