The state’s viaduct replacement projects are estimated to cost $3.3 billion. Funding comes from state, federal and local sources, as well as the Port of Seattle and tolls.
May 2018 update: In December 2016, we notified the Legislature that we would need up to $149 million to complete the program. In the 2017 session, the Legislature allocated $60 million to complete the program. In 2018, they allocated $54 million in state funds and $22 million in local funds. The tables below reflect the budget as approved by the Legislature.
|State projects||Project status||Budget ($M)|
|SR 99 Tunnel Project (Includes design-build project, north and south access contracts, and new north surface street connections.)||Construction||$2,100.8|
|SR 99 South Holgate Street to South King Street Project (south-end viaduct replacement)||Construction||$347.8|
|Central Waterfront Viaduct Removal, New Alaskan Way with connections to Elliott and Western avenues and the Battery Street Tunnel decommissioning||Planning||$280.2|
|Central Waterfront Construction Mitigation||Ongoing||$29.7|
Other Moving Forward Projects:
|Prior Environmental Impact Statements, Right of Way and Design Costs||$163.7|
|Total Use of Funds||$3,290.7|
|2005 Gas Tax (Partnership Funding)||$1,636.0|
|2003 Gas Tax (Nickel Funding)||$326.4|
|Port of Seattle||$267.7|
|Total Source of Funds||$3,290.7|