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Voter approval (2008)
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Milestone Target Feasibility study and public comment Preferred route alternative selected Environmental Impact Statement (EIS) completed Board selects route and final project to be built 2011 Record of decision -
Sound Transit completes the design of the trackway, stations and art installations as well as determining construction methods, including sequencing and mitigation.
Milestone Target Sound Transit and Bellevue City Council finalize tunnel design 2011 City of Bellevue cost-savings plan completed 2013 State Environmental Protection Agency (SEPA) Addendum to final EIS 2016 Second SEPA Addendum for I-90 HOV lane use between Seattle and Mercer Island 2017 -
Milestone Target Construction starts on the Operations and Maintenance Facility: East (OMF East) in Bellevue Elevated rail guideway is placed over I-405 in Bellevue 2018
Excavation of the downtown Bellevue tunnel is completed The Rainier Freeway station and D2 bus roadway from I-90 into downtown Seattle close in the fall for construction of Judkins Park Station Complete "post-tensioning" the I-90 floating bridge to prepare it for light rail and increase its lifespan Undercrossing on 112th Avenue Southeast in Bellevue gets started Work proceeds on station construction and guideway placement along the route Safety testing and pre-operations checks complete -
Start of service (2024/2025)*
East Link Extension
Connecting the Eastside with reliable light rail