DuPont Sounder Extension
Adding two stations to Sounder South

Timeline and milestones

  • Voter approval (2016)

  • Planning, design and construction (2034-2045)

  • Open for service (2045)

On Aug. 5, 2021, the Sound Transit Board adopted a realigned capital plan to address steeply rising construction and real estate costs affecting many voter-approved regional transit expansion projects. Based on current revenue projections and cost estimates, the Board’s adopted plan identifies 2045 as the DuPont Sounder Extension opening date.