About the projects
The West Seattle and Ballard Link Extensions (WSBLE) projects will provide fast, reliable light rail connections to dense residential and job centers throughout the region. In addition, a new downtown Seattle light rail tunnel will provide capacity for the entire regional system to operate efficiently. These two separate Link extensions projects are part of the regional transit system expansion approved by voters in November 2016 and as of May 2023 are on two separate environmental review processes and timelines.
The West Seattle and Ballard Link Extensions were evaluated together in the WSBLE Draft EIS published in January 2022. As described in the WSBLE Draft EIS, the two extensions will function as two separate lines, with the West Seattle Link Extension (WSLE) connecting to Everett and the Ballard Link Extension (BLE) connecting to Tacoma.
The extensions were initially on the same environmental review timeline. However, given additional environmental review needed for project refinements for BLE resulting from the Sound Transit Board action in March 2023, environmental review for the two extensions will now proceed on different timelines.
WSLE will proceed to a Final EIS, which is anticipated to be published in 2024, while a new Draft EIS will be completed for BLE to reflect action by the Sound Transit Board in March 2023. The BLE alternatives will be updated, including analysis of the preferred alternative, as well as other refinements and alternatives identified in the March 2023 Board Motion. The new BLE Draft EIS will build upon and incorporate the existing work to date on the WSBLE Draft EIS including all previous scoping comments, public outreach and feedback and environmental analysis. The BLE environmental review timeline will be updated when it is available.
West Seattle Link Extension (WSLE)
- Adds 4.1 miles of light rail service from downtown Seattle to West Seattle's Alaska Junction neighborhood.
- Includes four new stations from SODO to Alaska Junction.
- Start of service scheduled for 2032.
Learn about WSLE stations and alternatives
Ballard Link Extension (BLE)
- Adds 7.7 miles of light rail service from downtown Seattle to Ballard, including a new downtown Seattle rail-only tunnel.
- Includes nine new stations from Chinatown-International District to Market Street.
- Start of service scheduled for 2039.
West Seattle and Ballard Link Extensions Map
Preferred and other alternatives we are currently evaluating.
Learn the latest
Both the Ballard Link Extension and West Seattle Link Extension projects were studied together as part of the WSBLE Draft EIS document published in January 2022. Moving forward, the projects will have separate environmental review milestones and documents. We’ll adjust our engagement efforts for each extension, based on upcoming project milestones. That means that any future environmental documents will be published separately for Ballard Link Extension and West Seattle Link Extension, with unique engagement or notification efforts. You can continue to find information you need on this site, or by contacting our engagement team.
How did we get here?







- 2032 as the timeframe we can afford to open service from SODO to Alaska Junction.
- 2037 as the timeframe we can afford to open service to Smith Cove (including the second downtown tunnel).
- 2039 as the timeframe we can afford to open service to Ballard.




WSBLE Draft EIS
The West Seattle and Ballard Link Extensions (WSBLE) projects were evaluated together in a Draft Environmental Impact Statement (EIS), which was published on Jan. 28, 2022 and followed by a 90-day public comment period. The WSBLE Draft EIS was developed to help Sound Transit, as well as partner agencies and the public, to better understand the potential impacts and benefits of the projects, evaluate potential impacts and benefits of the alternatives on the natural and built environment and transportation system, and identify potential mitigation measures.
In July 2022, after reviewing the WSBLE Draft EIS and the comments from Tribes, the public and agency partners, the Sound Transit Board identified the preferred alternative for the West Seattle Link Extension and requested further study for the Ballard Link Extension. Read the July 2022 press release and Board Motion for more information.
After a period of further studies from August 2022 to February 2023, the Sound Transit Board identified a preferred alternative for the Ballard Link Extension. Read the March 2023 Board Motion and press release for more information.
The extensions were initially on the same environmental review timeline. However, given additional environmental review needed for project refinements for BLE resulting from the Sound Transit Board action in March 2023, environmental review for the two extensions will now proceed on different timelines.
WSLE will proceed to a Final EIS, which is anticipated to be published in 2024, while a new Draft EIS will be completed for BLE to reflect action by the Sound Transit Board in March 2023. The BLE alternatives will be updated, including analysis of the preferred alternative, as well as other refinements and alternatives identified in March 2023 Board Motion. The new BLE Draft EIS will build upon and incorporate the existing work to date on the WSBLE Draft EIS including all previous scoping comments, public outreach and feedback and environmental analysis. The BLE environmental review timeline will be updated when it is available.
We'll adjust our engagement efforts for each extension, based on upcoming milestones for each project. For information about ongoing environmental review, visit the West Seattle Link Extension project page and the Ballard Link Extension project page.
Want to take another look at the WSBLE Draft EIS?
You can still explore the WSBLE Draft EIS*. The Executive Summary provides an overview, condensing the larger Draft EIS to help readers quickly become acquainted with the projects.
WSBLE Draft EIS Executive Summary
You can view the entire WSBLE Draft EIS document online.
*After the WSBLE Draft EIS was published in January 2022, the Sound Transit Board identified different preferred alternatives than what are shown in the WSBLE Draft EIS. To learn more, visit the West Seattle Link Extension project page and the Ballard Link Extension project page.
Chapter 1
States what problems the project will address and why the investment in this transit project is needed.
Chapter 2
Describes the alternatives evaluated in the Draft EIS, including alignment and station locations, how they will be constructed, and how long construction will take.
Chapter 3
Presents analysis of the existing transportation system in the project area and discusses potential impacts of the alternatives to regional facilities and travel and transit operations. Discusses ridership and travel times for each alternative as well as parking impacts in addition to pedestrian and bicyclist access at each station area.
Chapter 4
Discusses the affected environment and environmental consequences of the project.
Chapter 5
Describes the project’s effects on a particular resource, combined with past, present and future effects of other projects. The cumulative impact assessment can identify consequences that might not be apparent when the project is considered in isolation.
Chapter 6
Evaluates how the West Seattle and Ballard Link Extensions alternatives meet the project’s purpose and need. It also summarizes the benefits and impacts of each alternative.
- K: Present and Future Development
- L: Supporting Information
- M: Summary of Alternatives Development and Initial Assessment Process
- Appendix N1: Transportation Technical Report
- N.1A Transportation Technical Analysis Methodology Report
- N.1B Existing and Future Transit Routes and Levels of Service
- N.1C Transit Service Integration Technical Memorandum
- N.1D Existing and Future Intersection Levels of Service
- N.1E Construction-Related Roadway Modifications
- N.1F Pedestrian Levels of Service
- N.1G Bicycle Master Plan Project List
- N.1H Historical Collisions by Collision Type
- Appendix N2: Visual Technical Report
- Appendix N3: Noise and Vibration Technical Report
- Appendix N3: Noise and Vibration Technical Report Attachments
- N.3A Noise Measurement Data, Site Details, and Photographs
- N.3B Vibration Measurement Site Photographs
- N.3C Vibration Propagation Measurement Results
- N.3D Maps of Noise Impact Assessment
- N.3E Maps of Vibration Impact Assessment
- N.3F Tables of Noise Predictions
- N.3G Tables of Vibration Predictions
- N.3H Vibration Analysis of Category 1 Uses and Special Buildings
- Appendix N4: Ecosystems Technical Report
- Appendix N4: Ecosystems Technical Report Attachments
- Appendix N5: Historic and Archaeological Resources Technical Report
- Appendix N5: Historic and Archaeological Resources Technical Report Attachments
*Appendix I is reserved for the mitigation plan and will be included in the Final EIS.
Equity and inclusion
Sound Transit is committed to centering communities along the project corridor and engaging communities of color and low-income and other vulnerable populations throughout the public involvement process. During the environmental review process, Sound Transit conducted an environmental justice analysis, which is included in the WSBLE Draft EIS. The analysis:
- Describes the demographics of the project corridor.
- Evaluates whether the projects would result in disproportionately high and adverse effects to communities of color and low-income communities.
- Considers potential project benefits such as improved access to opportunity.
- Documents our efforts to involve communities of color and low-income populations in the planning process and what we have heard so far from outreach efforts.
Along with the Draft EIS environmental justice analysis, Sound Transit and the City of Seattle have partnered on the Racial Equity Toolkit (RET) process for the projects. The RET lays out a process and a set of questions to guide the development, implementation and evaluation of the projects to advance racial equity. The RET process began early in project development, informing data analysis, technical evaluation and the focus and extent of community engagement. During the environmental review phase, the RET builds on the environmental justice assessment for the projects, documenting potential project impacts and benefits, and community feedback. However, given that the RET process is guided by a different framework than the EIS environmental justice requirements, the report on the RET process and findings is structured differently, and is oriented around RET outcomes for the projects. Our RET report on the process, requirements, outcomes, findings and community feedback is available for your reference.
Further studies
Further studies
Overview
In July 2022, the Sound Transit Board directed the project team to complete additional further studies. Staff held community workshops, open houses, stakeholder meetings and surveys between September 2022 and January 2023.
For an overview of the further studies conducted for both extensions and the results, read the Further Studies Executive Summary and reports or the Further Studies Engagement Summary. Descriptions and key findings for each further study are included below by segment.
In the Chinatown-International District (CID) segment of the Ballard Link Extension, the Sound Transit Board requested further study and engagement between community and agency partners focused on the shallow CID options to:
- Seek to address remaining questions, minimize potential impacts, and maximize community benefits
- Explore how to create an integrated, well-connected hub for all modes, opportunities to enhance ridership and access, activate or modify use of Union Station and plaza, as well as funding and cost savings opportunities
- Include study concepts requested by community and agency partners, including but not limited to work to define a 4th Avenue shallow tunnel option with the goal to maximize benefits while minimizing costs and impacts
We want to engage community early to shape our further study scope and to inform our process for iterative, inclusive, and meaningful engagement throughout the study period.
Given the complexity, the legacy of projects like these happening to community and not with community, and our interest in supporting meaningful community involvement around the CID Station area, Sound Transit and the City of Seattle are organizing a series of meetings to supplement many other engagement approaches that center reaching communities in the CID and Pioneer Square neighborhoods.
Learn more about our engagement process. 正體字/繁體字 简化字 TIẾNG VIỆT
Over the course of five public meetings and two online surveys, community members shared ideas for station locations outside of the CID, refinements to the 4th Avenue Shallow alternative and other urban design and place-keeping ideas. Participants asked questions and shared thoughts on opportunities and issues, who might benefit and who might be burdened, and how concepts might support neighborhood goals. Meeting materials and summaries of community feedback we’ve heard so far are available below the further studies section if you’d like to learn more.
- Refinements to Draft EIS 4th Avenue Shallow (CID-a) Alternative
- New Alignment and Station Locations
- Union Station and plaza activation
Refinements to 4th Avenue Shallow Alternative (CID-1a)

Refinements to Draft EIS 4th Avenue Shallow (CID-1a) Alternative explored station and alignment options to maximize community benefits while minimizing costs and impacts.
- ICON apartment displacements can be reduced from 4 years to two, 2-month periods
- Reduction in noise and air quality construction effects through a range of strategies
- Reduction in potential impacts to BNSF, but lengthens construction duration by one year (to up to 12 years)
- Reduction in duration of partial closure on 4th Avenue by 1 year (up to 5 years)
- Estimated cost $3.1 billion (between Pike and Holgate)
- Cost delta compared to realigned financial plan: +$700 million
Station North of CID

New alignment and station location North of the CID explored station and alignment options close to Pioneer Square Station, east of 4th Avenue based on ideas from community and agency partners.
Findings:
- Consolidates Midtown and CID Stations
- Could facilitate transit integration with Madison BRT
- Displaces King County Admin building and social services
- Equitable transit oriented development opportunity
- Avoids direct station construction disruption in CID
- Accommodates direct transfers at Pioneer Square Station
- Temporary closure of James St for 4 years and trolley wire relocation during construction
- Within 10-minute walk to CID, Pioneer Square, Colman Dock, and south end of Downtown/Midtown
- Estimated cost $2.05 billion (between Pike and Holgate)
- Cost delta compared to realigned financial plan: -$360 million
A station South of CID

New alignment and station location South of the CID explored station alignment options south of CID (under 6th Avenue S, south of Seattle Blvd S) based on other ideas from community and agency partners.
Findings:
- Avoids direct station construction disruption in CID
- Equitable transit oriented development opportunity
- Within 10-minute walk to CID and Stadiums
- Does not accommodate direct transfers
- Limited detours; closure of 6th Ave, south of Seattle Blvd
- Estimated cost $2.5 billion (between Pike and Holgate)
- Cost delta compared to realigned financial plan: +$80 million
Station North of CID and station South of CID

New alignment and station locations North and South of the CID explored station and alignment options north of CID (close to Pioneer Square, east of 4th Avenue) and south of CID (under 6th Avenue S, south of Seattle Blvd S) based on other ideas from community and agency partners.
Findings:
- Avoids direct station construction disruption in CID
- Equitable transit oriented development opportunity
- Within 10-minute walk to CID and Stadiums
- Does not accommodate direct transfers
- Limited detours; closure of 6th Ave, south of Seattle Blvd
- Estimated cost $2.55 billion (between Pike and Holgate)
- Cost delta compared to realigned financial plan: +$160 million
Union Station and plaza activation

Union Station and plaza activation concepts explored options to activate and/or modify uses of Union Station and the adjacent plaza. Concept shown is with a 4th Avenue shallow station with an entrance in the concourse of Union Station. With other options, that area would be programmed with other community uses.
Findings:
- Public safety key value for design and management
- Community support for investment in the historic station and surrounding plaza
- Uses and activities include mobility, commerce and community
Overview of recent public engagement and resources in the CID:
Over 200 people attended the kick-off open house at Union Station to learn more about the further studies and provide feedback or ideas that are shaping our engagement approach and the scope of our studies over the next several months. There was also an online survey for those who couldn’t attend the open house in person.
Building on the feedback we received at the kick-off open house and through the online survey, our first workshop focused on options for further study. We brought forward concepts shared with us by the community and began to explore opportunities and challenges together.
Building on the feedback and questions we received at the kick-off open house and workshop #1, this workshop initiated a conversation about tradeoffs. We shared the latest on what we learned about the options for further study, including some of the potential impacts and benefits, and gathered your feedback on tradeoffs and potential refinements.
We focused on key issues brought forth by community members. We also engaged in problem-solving around key issues and potential mitigation approaches for each option.
We built on previous workshops and community feedback and brought it all together to begin collecting your feedback for the Sound Transit Board.

At the Midtown station in the Downtown segment, the Board directed staff to explore opportunities to reduce station depths, improve passenger access, and refine the station entrance. As a potential cost savings measure, staff will also be looking at potential station entrance refinements at Midtown and Denny stations (shifting entrances into public right of way) and Westlake (consolidating station entrances).
The Board also directed staff to explore connecting Westlake/5th Avenue station to Denny/Terry station to South Lake Union/Harrison station and explore opportunities to provide station access from both sides of Denny Street to the Denny/Terry station.
Near Seattle Center, staff will explore connecting South Lake Union/Harrison station to Seattle Center/Mercer station to either north tunnel portal locations. Staff will also explore shifting the Seattle Center Republican station west.
We have also studied additional refinements to station entrances in the Downtown segment. This work will continue in future phases. More information is available below. Please stay tuned for future opportunities to engage.
- Denny Station: Entrance on both sides of Denny
- Station Entrance Refinements
- Midtown Station (DT-1): Columbia Street right-of-way
- Midtown Station (DT-1): 4th Avenue right-of-way
- Denny Station (DT-1): Lenora Street right-of-way
- Denny Station (DT-1): 8th Avenue right-of-way
- Westlake Station (DT-1): Entrance Consolidation
South Lake Union Mix-and-Match
Compared to 5th Avenue / Harrison Alternative (DT-1)

The South Lake Union: Mix-and-Match connects Westlake/5th Avenue Station (DT-1) to Denny/Terry Station (DT-2) to South Lake Union/Harrison Station (DT-1). This concept explores alignment variation to address agency concerns with streetcar service disruption during construction.
Findings:
- Avoids temporary shutdown of streetcar
- High-risk long-haul fiber relocation with minimum 1-year overall project delay
- Cost delta compared to realigned financial plan: + $200 million
.
Seattle Center: Mix-and-Match
Compared to Preferred 5th Avenue / Harrison Alternative (DT-1)

The Seattle Center: Mix-and-Match connects South Lake Union/Harrison Station (DT-1) to Seattle Center/Mercer Station (DT-2) to either north tunnel portal location. This concept explores options to avoid construction effects near Seattle Center.
Findings:
- Connection to Republican Portal not practical due to operational issues
- Avoids construction effects near NW Rooms
- Noise and vibration effects to Seattle Opera, KING FM, McCaw Hall can be mitigated
- Partial closure of Mercer Street with traffic effects
- 15 additional residential and 24 additional business displacements
- Cost delta compared to realigned financial plan: + $210 million
.
Seattle Center: Republican West
Compared to Preferred 5th Avenue / Harrison Alternative (DT-1)
Seattle Center: Republican West shifts the Seattle Center Republican Station west. The concept explores options to avoid construction near Seattle Center.
Findings:
- Temporary closure of Republican Street with minimal traffic effects
- Extended cut-and-cover construction on Republican Street
- Avoids construction effects near NW Rooms
- Noise and vibration effects to Uptown Cinema can be mitigated
- 8 additional business displacements
- Cost delta compared to realigned financial plan: + $60 million
Denny Station: Entrance on both sides of Denny
Compared to Preferred 5th Avenue / Harrison Alternative (DT-1)

The entrance on both sides of Denny explores opportunities to provide station access from both sides of Denny Street and improve passenger access.
Findings:
- Avoid temporary shutdown of streetcar
- Shortens walk to streetcar and bus on Westlake Ave
- Permanently narrows Terry Ave, with minimal traffic effects
- Reduces property acquisition and relocation
- Cost delta compared to realigned financial plan: +190 million (with SLU Mix and Match)
.
Midtown Station (DT-1): Columbia St right-of-way
Compared to Preferred 5th Avenue / Harrison Alternative (DT-1)

Midtown Station: Columbia Street right-of-way explores shifting station entrance into public right-of-way to reduce costs and schedule risk and improve passenger experience.
Findings:
- Reduces risk of modifying existing building
- Permanently narrows Columbia St with minimal traffic effects
- Adds escalator access, improves passenger experience (when connected to shallower CID station)
- Cost delta compared to realigned financial plan: + $30 million
.
Midtown Station (DT-1): 4th Avenue right-of-way
Compared to Preferred 5th Avenue / Harrison Alternative (DT-1)

Midtown Station: 4th Avenue right-of-way explores shifting station entrance into public right-of-way to reduce costs and schedule risk.
Findings
- Temporarily narrows 4th Ave to one lane during construction with substantial traffic and transit effects
- Permanently narrows 4th Ave to two lanes with minor traffic effects
- Cost delta compared to realigned financial plan: - $20 million
.
Denny Station (DT-1): Lenora Street right-of-way
Compared to Preferred 5th Avenue / Harrison Alternative (DT-1)

Denny Station: Lenora Street right-of-way explores shifting station entrance into public right-of-way to reduce costs.
Findings
- Reduces development risk
- Permanently closes Lenora St with minimal traffic effects
- Cost delta compared to realigned financial plan: - $20 million
Denny Station (DT-1): 8th Avenue right-of-way
Compared to Preferred 5th Avenue / Harrison Alternative (DT-1)

Denny Station: 8th Avenue right-of-way explores shifting station entrance into public right-of-way to reduce costs.
Findings
- Reduces development risk
- Permanently narrows 8th Ave with minimal traffic effects
- Cost delta compared to realigned financial plan: - $60 million
.
Westlake Station (DT-1): Entrance Consolidation
Compared to Preferred 5th Avenue / Harrison Alternative (DT-1)

Westlake Station: Entrance consolidation explores shifting station entrance into public right of way to reduce costs and improve passenger experience.
Findings
- Eliminates 4th Avenue roadway closure
- 4 fewer business displacements
- Adds redundancy with vertical circulation
- Provides opportunity for integrated joint development
- Cost delta compared to realigned financial plan: - $50 million

(Click to enlarge)
In the South Interbay area of the Interbay-Ballard segment, the Board directed staff to explore shifting the tunnel portal south. They also asked staff to explore opportunities to address concerns with the guideway along Elliott Avenue and potential effects to properties in Interbay, including an option to consolidate Smith Cove and Interbay stations.
(Click to enlarge)
In the Ballard neighborhood of the Interbay-Ballard segment, the Board directed staff to study:
- Pedestrian access improvements across 15th Avenue associated with the Tunnel 14th Avenue Station option.
- Station access and safety, including north and south of Market Street
- Cost savings opportunities and potential third-party funding needs associated with the Tunnel 15th Avenue Station option
- Shifting the Tunnel 14th Avenue alignment as a potential cost savings measure
South Interbay:
- South Interbay segment station and alignment
Ballard:
- Tunnel 15th Avenue Cost Savings: Draft EIS Station Location
- Tunnel 15th Avenue Cost Savings: Station in Right-of-Way
- Tunnel 15th Avenue Entrance North of Market
- Tunnel 14th Avenue Station Access
- Shifted Tunnel 14th Avenue Station
More information available in Interbay / Smith Cove report and Ballard report. Meeting materials and summaries of feedback we’ve heard so far are available below the further studies section if you’d like to learn more about recent engagement.
South Interbay Modified SIB-1 alignment
Compared to Preferred Galer Street Station/Central Interbay Alternative (SIB-1) to Preferred Tunnel 14th/15th Avenue (IBB-2a/b)

(Click to enlarge)
The South Interbay Modified SIB-1 alignment shifts Interbay Station south to straddle Dravus St to avoid Seattle City Light and Seattle Storm properties.
Findings:
- Adds station entrance on both sides of Dravus Street
- 20 fewer business displacements
- Temporary lane closures of Dravus for 1.5 years
- Cost delta compared to realigned financial plan: - $30 million
The South Interbay Modified SIB-3 Alignment
Compared to Prospect Street Station/Central Interbay Alternative (SIB-3) to Preferred Tunnel 14th/15th Avenue (IBB-2a/b)

(Click to enlarge)
The South Interbay Modified SIB-3 alignment shifts north portal location south and shift Smith Cove Station north of Magnolia Bridge to avoid unstable slope risk on Queen Anne hillside and avoid Seattle City Light and Seattle Storm properties.
Findings:
- Public partnership opportunity for equitable transit oriented development
- Adds station entrance on both sides of Dravus Street
- Temporary lane closures of Dravus for 1.5 years
- Shifted portal location not practical
- Cost N/A
Consolidated Alignment
Compared to Preferred Galer Street Station/Central Interbay Alternative (SIB-1) to Preferred Elevated 14th Avenue Alternative (IBB-1a)

(Click to enlarge)
The consolidated alignment consolidates Smith Cove and Interbay Stations with below grade alignment to avoid concerns about guideway on Elliott Avenue, avoid unstable slope risk on Queen Anne hillside and avoid Seattle City Light and Seattle Storm properties.
Findings:
- Temporary lane closures of 15th Ave for 1.5 years
- Consolidation to one station reduces access with minor ridership loss
- Ongoing analysis of unstable slope risk on Queen Anne hillside
- Extended tunnel alignment
- Cost delta compared to realigned financial plan: +$210 million
Tunnel 15th Avenue Cost Savings: Draft EIS Station Location
Compared to Preferred Tunnel 15th Avenue Station Option (IBB-2b)

(Click to enlarge)
Tunnel 15th Avenue Cost Savings: Draft EIS Station Location reduces size of east station entrance and eliminates south entrance to reduce costs.
Findings:
- Reduces access from the South
- Potential to also reduce size of west entrance
- Avoids displacement of Safeway store but reduces opportunities for equitable transit oriented development
- Reduces construction staging area
- Cost delta compared to realigned financial plan: +$70 million (or +$30 million with optional smaller west entrance)
Tunnel 15th Avenue Cost Savings: Station in Right-of-Way
Compared to Preferred Tunnel 15th Avenue Station Option (IBB-2b)

(Click to enlarge)
Tunnel 15th Avenue Cost Savings: Station in Right-of-Way shifts station construction into 15th Ave NW and eliminates south entrance to reduce costs.
Findings:
- Reduces access from the South
- Potential to also reduce size of west entrance
- Temporary closure of intersection during construction
- Avoids displacement of Safeway store but reduces opportunities for equitable transit oriented development
- Cost delta compared to realigned financial plan: +$70 million (or +$30 million with optional smaller west entrance)
.
Tunnel 15th Avenue Entrance North of Market
Compared to Preferred Tunnel 15th Avenue Station Option (IBB-2b)

(Click to enlarge)
Tunnel 15th Avenue Entrance North of Market adds station entrance to NE corner in public right-of-way to improve passenger access to the north.
Findings:
- Reduces 15th Ave from 7 to 5 lanes
- Temporary partial closure of 15th Ave for up to 2 years
- Cost delta compared to realigned financial plan: + $200 million
Tunnel 14th Avenue Station Access
Compared to Preferred Tunnel 15th Avenue Station Option (IBB-2b)

(Click to enlarge)
Tunnel 14th Avenue Station Access includes pedestrian access improvements across 15th Ave with Tunnel 14th Station to improve passenger access to the west.
Findings:
- At-grade improvements may reduce pedestrian travel time, but have minor effects on traffic and transit operations
- Grade-separated improvements may add travel time, but reduce passenger-vehicle interactions
- Cost delta compared to realigned financial plan:
- +$0.5-1 million for at-grade improvements
- +$20-100 million for grade-separated improvements (+ O&M costs)
Shifted Tunnel 14th Avenue Station
Compared to Preferred Tunnel 14th Avenue Station Option (IBB-2b)

(Click to enlarge)
Shifted Tunnel 14th Avenue Station shifts tunnel alignment to the east and eliminates western station entrance to reduce costs.
Findings:
- Avoids displacement of Safeway and reduces equitable transit oriented development opportunity
- Requires additional street crossing if accessing from the west
- Cost delta compared to realigned financial plan: - $140 million
Recent public engagement in Interbay/Ballard:
Over 70 people attended the open house at Lawton Elementary School to learn about and provide feedback on new concepts being studied in the Interbay/Ballard segment of the West Seattle and Ballard Link Extensions project. There is also an online survey open until Dec. 23 for those who couldn’t attend the open house in person.
- Meeting Materials
- Higher resolution concept images can be found here.
At the event, we shared additional updates and some results on the further studies we’ve been working on in both the Interbay and the Ballard areas. For Interbay, this included more information on the three potential alignment concepts we presented at the open house on December 12. For Ballard, this included sharing information and findings on potential cost savings and access improvements we’ve been studying related to Tunnel 14th Ave and Tunnel 15th Ave Station options.

For the West Seattle Link Extension, the Sound Transit Board identified the following preferred alternative: Medium Tunnel 41st Avenue Station Alternative in the West Seattle Junction segment; the Andover Street Station Lower Height Alternative in the Delridge segment; the South Crossing Alternative in the Duwamish segment, and the At-grade Alternative Staggered Station Configuration in the SODO segment.
In addition to identifying a preferred alternative for the West Seattle Extension, the Board directed staff to:
- Study shifting a station entrance to 42nd Avenue SW at the Alaska Junction station
- Explore opportunities to provide access north and south of Andover Street at the Delridge station, including a pedestrian bridge across Andover Street or shifting the alignment south towards SW Yancy Street, west of the station
- Explore opportunities to enhance access from the platform to S. Lander Street at the SODO station and, based on additional Board requests in September and November of 2022, look for opportunities to avoid or minimize effects to local businesses
Additionally, the Board directed staff to further study the following potential cost savings concept:
- In the West Seattle Junction segment, eliminate the Avalon station
Following Board direction, the project team continues to study additional refinements for the West Seattle Link Extension. This work will continue as part of ongoing project development. More information on this work is available below and in the West Seattle Link Extension report. Please stay tuned for future opportunities to engage.
- Alaska Junction station access refinement
- Delridge access, integration and alignment refinement
- Eliminate Avalon Station
- SODO access to S Lander Street
Alaska Junction station access refinement
Compared to Medium Tunnel 41st Avenue Station (WSJ-5)

(Click to enlarge)
Alaska Junction station access refinement shifts station entrance 42nd Avenue SW to improve passenger access.
Findings:
- 90 additional equitable transit oriented development housing units
- Eliminates need for pedestrian crossing of 41st Ave SW
- 39 fewer residential and 32 additional business displacements
- Cost delta compared to realigned financial plan: + $80 million
Delridge access, integration and alignment refinement
Compared to Andover Street Station Lower Height Alternative (DEL-6)

(Click to enlarge)
Delridge access, integration and alignment refinement shifts alignment south towards SW Yancy Steet to improve passenger access and transit integration and reduce effects to organizations serving low-income and communities of color.
Findings:
- 14 fewer residential and 3 additional business displacements
- Eliminates potential passenger and freight conflicts
- Permanent closure of 32nd Ave
- Cost delta compared to realigned financial plan: + $50 million
Eliminate Avalon Station
Compared to Andover Street Station Lower Height Alternative (DEL-6) and Medium Tunnel 41st Avenue Station Alternative (WSJ-5)

(Click to enlarge)
The Eliminate Avalon Station eliminates station and optimizes alignment to reduce costs. Assumes shifting alignment south towards SW Yancy St.
Findings:
- 48 fewer residential displacements and 3 fewer business displacements
- Longer travel times for passengers closer to DEIS Avalon Station
- No expected decrease in project ridership
- Reduces temporary and permanent roadway closures
- Cost delta compared to realigned financial plan: - $80 million
SODO access to S Lander Street
Compared to At-Grade Alternative (SODO-1a) Staggered Station Configuration

(Click to enlarge)
SODO access to S Lander Street enhances access from platform to S Lander Street to minimize property effects on west side of station and add connection to S Lander Street.
Findings:
- Direct connection to Lander Street overpass
- Less direct station access from 4th Ave S
- Minimize property effects on west side of station
- No estimated cost change
Property Owners
In order to build the West Seattle and Ballard Link Extensions projects, Sound Transit will need to purchase and use private property. In some cases, this means moving people from their homes or businesses.
Sound Transit’s property acquisition process treats affected property owners and tenants fairly, provides appropriate Just Compensation and relocation benefits and minimizes hardships with all parties involved. We realize that the possibility of being relocated from your home or business may be difficult and we are here to answer questions and provide support throughout the process.
Sound Transit has specific policies and procedures that describe how the agency will work with property owners and tenants throughout the acquisition process. We follow federal, state and local laws in our property acquisition process, more specifically the Uniform Relocation Assistance and Real Property Acquisition Policies Act, as well as state law.
Property acquisition milestones
Pre-Draft EIS publication
- Sound Transit contacts potentially affected property owners
Draft EIS publication
- Draft EIS available for public review and comments
- Sound Transit Board confirms or modifies the preferred alternative based on comments from the public, agency partners and Tribes
Final EIS publication
- Sound Transit Board selects projects to be built
Final Design
- Sound Transit identifies property rights needed to construct, operate and maintain the system
- Sound Transit Board authorizes property purchases
- Sound Transit will prepare an appraisal to determine fair market value of property needed for the projects
- Sound Transit will provide relocation assistance to people and businesses displaced by the projects, including referrals to comparable properties and payment of moving costs
- Sound Transit staff are available to support property owners and tenants through this process
Without concrete decisions until the release of each project's Final EIS, we know this period of uncertainty can be stressful and are here to help. If you have additional questions or would like to set up a virtual meeting, contact our outreach team at westseattlelink@soundtransit.org, ballardlink@soundtransit.org or 206-903-7229.
Frequently Asked Questions
Potentially affected property owners are notified prior to the release of a Draft Environmental Impact Statement (EIS). Being a potentially affected property owner means that your property is close to one or more alternatives we are currently studying. This notification of potential impact does not mean a decision has been made to purchase your property.
Notification that your property is potentially affected does not mean a decision has been made to purchase your property. But it does mean there’s a possibility Sound Transit may need to acquire all or a portion of your property at a later project phase. As we refine project design, we’ll continue updating our list of potentially affected properties. We won’t make final determinations on which properties to purchase until after a Final EIS and the Sound Transit Board selects the projects to be built.
Residential relocation
For residential property owners and tenants, Sound Transit provides three primary types of relocation assistance: advisory assistance, moving expenses and replacement housing payments. A qualified relocation specialist will work with displaced residents to determine needs, explain benefits, and provide referrals to current housing inventories as well as assistance and advice with filing claims.
Business relocation
Sound Transit provides three primary types of relocation assistance: advisory assistance, moving expenses and business reestablishment expenses. The level of benefits and advisory services may be different for each displaced business depending on complexity of the business operation.
After the Sound Transit Board has selected the projects to be built and the Federal Transit Administration has issued a Record of Decision, the Board will authorize property purchases along the final project corridors. Several steps will take place before this authorization can occur, including:
- Preparing property information to inform the Sound Transit Board’s authorization.
- Identifying the type of acquisition (i.e., full or partial acquisition, temporary or permanent easement).
- Officially notifying property owners that their property is being considered for acquisition by the Sound Transit Board and providing the date of the meeting at which the Board will consider authorizing acquisitions. Staff will notify property owners in advance of the Sound Transit Board meeting date where property acquisition will be discussed followed by an opportunity to provide public comments on the matter.
After authorization by the Sound Transit Board, Sound Transit will begin the property acquisition process, which follows these steps:
- Appraisal is conducted by an independent appraiser to determine fair market value.
- Appraisal is reviewed by a second appraiser for compliance with proper methodology and appropriate value conclusions.
- Sound Transit prepares an offer package and delivers it to the property owner to review and negotiate. Property owners are also provided a copy of the appraisal.
- Sound Transit negotiates to purchase the property.
- Sound Transit may also reimburse for some or all of the following:
- Owner’s own appraisal
- Legal review of offer
- Accounting review for tax purposes
- For people and businesses displaced by the projects, a relocation agent will meet with the property owner to explain relocation assistance, eligibility and entitlements.
Q: What is the average timeframe from the offer to closure of sale?
A: While each acquisition is unique, most processes can take anywhere between 6-12 months to complete.
Q: Does Sound Transit pay closing costs?
A: Sound Transit will pay for all normal sale expenses including escrow fees, title insurance, pre-payment penalties, mortgage release fee, recording fees and all typical costs related to conveying title. The sale will be exempt from real estate excise tax.
Q: If my house does have to be acquired and I have to relocate, am I able to stay in the same school district or buy a similar home?
A: Sound Transit will make every effort to find comparable properties within the desired market.
Q: Is there a geographical boundary limit for relocation?
A: No, there is no geographical limit on where you can move. Sound Transit will pay moving expenses within a 50-mile range.
Q: If there is a long delay between acquisition and when construction starts, will there be empty houses in neighborhoods for several years?
A: While acquisitions are tied to the project schedule, it is possible that homes could be vacated prior to construction starting. If that occurs, Sound Transit will take appropriate measures to secure the properties until demolition can take place.
.png)
Need more info?
For more information about property acquisition and relocation, please refer to the following resources:
Get involved
There are multiple opportunities to get engaged with the projects.
Talk to project staff

Request a briefing or meeting with us; we are happy to meet with you or your community group online with opportunities to hold in-person briefings once safe to do so
Stay engaged

Follow us on social media @SoundTransit
Contact us

Call the project line at 206-903-7229 to speak with a community engagement specialist

Email with questions, concerns or comments: westseattlelink@soundtransit.org ballardlink@soundtransit.org

Thank you for joining our mailing list!
Thank you for your comment!