West Seattle Link Extension
SODO to Alaska Junction, Seattle, Washington — approximate regional pin
DesignValue not verifiedLast reviewed: 2026-09-29
Sourced project intelligence. Blank fields are shown as “Not yet verified.” Estimates and schedules can change. Check official procurement notices for current deadlines and terms.
Project overview
- Infrastructure Sector
- Rail Infrastructure
- Project Type
- Light rail extension, bridge and tunnel
- Location
- SODO to Alaska Junction, Seattle, Washington — approximate regional pin
- Project Owner / Agency / Developer
- Sound Transit
- Project Description
- Planned 3.9-mile light rail extension connecting SODO and West Seattle, including a river crossing, guideways, tunnel and stations.
- Estimated Project Value
- Not yet verified
- Funding Source
- Not yet verified
Schedule & delivery
- Project Stage
- Design
- Expected Procurement Date
- Not yet verified
- Construction Start
- Not yet verified
- Estimated Completion
- 2035 start of service (owner's 2026 revised target).
- Delivery Method
- Not yet verified
- Major Scope / Components
- Planned 3.9-mile light rail extension connecting SODO and West Seattle, including a river crossing, guideways, tunnel and stations.
Project team
- Key Organizations Involved
- Not yet verified
- Prime Contractor / Construction Manager
- Not yet verified
- Engineering / Design Firm
- Not yet verified
- Technology / Equipment Providers
- Not yet verified
- Decision Makers / Project Contacts
- Not yet verified
Procurement & opportunities
- Current RFPs / RFQs / Bid Opportunities
- Not yet verified
- Upcoming RFPs / Procurement Opportunities
- Not yet verified
- Contract Value / Package Size
- Not yet verified
- Workforce Requirements
- Not yet verified
- Supplier / Subcontractor Opportunities
- Not yet verified
- Website / Procurement Portal
- Not yet verified
Progress & intelligence
- Permitting / Regulatory Status
- Not yet verified
- Major Milestones
- Not yet verified
- Recent Project Updates
- Reviewed September 29, 2026: Owner reports funded final-design contracts and anticipates major construction contract awards in 2027.
- Challenges / Risks
- Not yet verified
- Last Updated
- 2026-09-29