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.