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Voter approval (2008)
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Milestone Target Conceptual engineering Environmental analysis Board approves amended project: July 2018 -
Milestone Target Advance design Acquire property Hire design-build team (Under a design-build contract, Sound Transit selects a single contractor to oversee both design and construction, creating opportunities to streamline project delivery and help guarantee budget.) Obtain permits -
Milestone Target Complete design Groundbreaking Construction updates -
Base open (2023)