West Seattle alternatives

West Seattle, the south segment of the corridor, includes stations at Delridge, Avalon and Alaska Junction. Link light rail will continue south of SODO, cross the Duwamish River and terminate in West Seattle.


Explore the alternatives

Learn more

Use the map to the right to explore the different route options we're considering for the West Seattle segment of the corridor. Select an alternative at the top of the page to learn more about the key takeaways for each alternative.

In case you missed us, review the presentation from our 9/8 open house and neighborhood forum.

ST3 Representative Project

Elevated alignment from SODO turning west just south of the West Seattle Bridge. Crosses the Duwamish Waterway as a high-level fixed bridge and continues elevated with an elevated station at Delridge Way SW north of SW Andover Street. Turns west at SW Genesee Street with an elevated station east of 35th Avenue SW. Turns up Fauntleroy Way SW and then west on SW Alaska Street, with an east-west oriented elevated station at 41st Avenue SW.

What is the representative project and its alternatives?

The representative project is the voter-approved general route and station locations. The other alternatives for this segment are refined options of the route and station locations to be considered along with the representative project.

Pigeon Ridge/West Seattle Tunnel

Elevated alignment from SODO turning west on S Idaho Street. Crosses the Duwamish Waterway as a high-level fixed bridge near SW Idaho Street, south of Harbor Island, tunnels under Pigeon Point, and continues with an elevated station straddling over Delridge Way SW. Travels west along the north edge of the Delridge Playfield and West Seattle Golf Course. Goes back into a tunnel east of SW Avalon Way with a tunnel station at 36th Avenue SW straddling under Fauntleroy Way SW, and a north-south oriented tunnel station under 42nd Avenue SW and SW Alaska Street.

How it compares to other alternatives:

  • Includes two tunnels
  • Lower guideway along SW Genesee Street
  • Furthest south Delridge station location
  • Lessens residential and business effects in Delridge
  • Most engineering constraints (tunnel through unstable slopes, widest water crossing, wide Union Pacific Argo railyard crossing, high voltage lines, etc.)
  • Most effects to Duwamish Greenbelt
  • Tunnel option may cause potential schedule delay compared to the ST3 Representative Project
  • $1.2 billion more than ST3 Representative Project; requires third-party funding

Oregon Street/Alaska Junction/Elevated

Elevated alignment from SODO turning west just south of the West Seattle Bridge. Crosses the Duwamish Waterway as a high-level fixed bridge and continues elevated with an elevated station west of Delridge Way SW near SW Dakota Street. Turns west at SW Genesee Street with an elevated station east of 35th Avenue SW. Turns up Fauntleroy Way SW and then west on SW Oregon Street, then heads south with a north-south oriented elevated station near SW Alaska Street east of 44th Avenue SW.

How it compares to other alternatives:

  • Increases residential and business effects at the Junction
  • Complicates future extension south
  • Higher guideway along SW Genesee Street
  • Some engineering constraints (Pigeon Point steep slope)
  • Some effects to Duwamish Greenbelt (Pigeon Point)
  • Similar cost as the ST3 Representative Project

Oregon Street/Alaska Junction/Tunnel

Elevated alignment from SODO turning west just north of the West Seattle Bridge. Crosses the Duwamish Waterway as a high-level fixed bridge and continues elevated with an elevated station west of Delridge Way SW near SW Dakota Street. Turns west at SW Genesee Street with an elevated station near 35th Avenue SW straddling Fauntleroy Way SW. Goes into a tunnel near 37th Avenue SW, turning south with a north-south oriented tunnel station near SW Alaska Street east of 44th Avenue SW.

How it compares to other alternatives:

  • Includes tunnel
  • Higher guideway along SW Genesee Street
  • Fewer engineering constraints (avoids Pigeon Point steep slope)
  • Avoids effects to Duwamish Greenbelt
  • Affects freight, port terminal facilities during construction
  • Tunnel option may cause potential schedule delay compared to the ST3 Representative Project
  • $500 million more than ST3 Representative Project; requires third-party funding

Golf Course/Alaska Junction/Tunnel

Elevated alignment from SODO turning west just south of the West Seattle Bridge. Crosses the Duwamish Waterway as a high-level fixed bridge and continues elevated with an elevated station west of Delridge Way SW near 25th Avenue SW. Turns west and travels along the north edge of the West Seattle Golf Course before entering into a tunnel east of SW Avalon Way with a tunnel station near 36th Avenue SW straddling under Fauntleroy Way SW. Turns south near Fauntleroy Way SW with a north-south oriented tunnel station under Fauntleroy Way SW and SW Alaska Street.

How it compares to other alternatives:

  • Includes tunnel
  • Lessens residential and business effects at the Junction
  • Lower guideway along SW Genesee Street
  • Some engineering constraints (Pigeon Point steep slope)
  • Some effects to Duwamish Greenbelt (Pigeon Point)
  • Tunnel option may cause potential schedule delay compared to the ST3 Representative Project
  • $700 million more than ST3 Representative Project; requires third-party funding

The online survey is now closed. Read below to see the feedback we’ve received so far.

Speech bubble icon What your neighbors have said

Alternative details

 
Tunnel
 
Elevated
Alternate Text
Station