The state’s viaduct replacement projects are estimated to cost $3.2 billion. Funding comes from state, federal and local sources, as well as the Port of Seattle and tolls.
June 2017 update: The Legislature recently approved a 1.8 percent budget increase for the program, or a cash-flow need of $60 million in the 2017-2019 biennium, to ensure continued progress on the program. A total provisional budget need of $149 million may be needed to complete the program. The tables below reflect the budget as approved by the Legislature.
|State projects||Project status||Budget ($M)|
|SR 99 Tunnel Project (Includes design-build project, north and south access contracts, and new north surface street connections.)||Construction||$2,102.1|
|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||$257.4|
|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||$3,214.6|
|2005 Gas Tax (Partnership Funding)||$1,582.0|
|2003 Gas Tax (Nickel Funding)||$326.3|
|Port of Seattle||$267.7|
|Total Source of Funds||$3,214.6|