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Project Title & Location
SR 520 Bridge Replacement and HOV Project
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Project Description
The overall project will replace the SR 520 floating bridge and associated approaches. This project is currently funded to complete the environmental review, including an Environmental Impact Statement through the Record of Decision, early right-of-way acquisitions, and design.
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Contractor/Consultant
EIS – Parametrix, Public Involvement – EnviroIssues, General Engineering - HDR
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Recent Progress
- Continued Meditation for west side configuration planning
- Program Finance Plan completed and delivered to Legislators
- Completed Eastside Conceptual Structures Plans
- Continued early pontoons construction planning
- Completed Early Pontoon EIS Notice of Intent to Federal Register and draft Purpose
and Need Statement
- Continued coordination with King County and Puget Sound Clean Air on Health Impact
Assessment
- Received directions from Governor Gregoire to accelerate delivery schedule. New bridge
open to traffic in 2014. Project completion in 2018.
- Met with Minnesota DOT representatives to share catastrophic failure lessons learned.
For more project information see the project web page at:
www.wsdot.wa.gov/projects/SR520bridge
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Design Construction Impacts
The anticipated start of major construction is spring of 2011. The project has received $52 million from the 2003 Nickel Package, $496 million from the 2005 Transportation Partnership Account, and $1,391 million of other State and Federal funds. This money will be used for the completion of the Environmental Impact Statement, project design, right-of-way purchases and to begin construction. Completion of project construction depends on additional funding from potential tolling, and other sources.
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Environmental Impacts / Compliance
A Draft EIS with a thorough analysis of the project alternatives and options was issued in August 2006. Project has started work on a Supplemental Draft EIS incorporating the 4+2 lane configuration as identified by the Governor and legislators. The project has started a Draft EIS for Early Pontoon Construction this winter.
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Impacts to Traffic
Traffic impacts in the corridor have not yet been fully determined. Pontoons for the new floating bridge will be constructed offsite and brought in through the Ballard Locks. The new floating bridge will be built to the north of the existing bridge allowing traffic to continue use the exisiting bridge during construction.
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Milestones |
Scheduled |
Attained |
Milestone Outlook |
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Begin Preliminary Engineering
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Fall 2003
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Fall 2003
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The fall of 2003 the SR 520 Bridge Replacement and HOV Project officially changed from the Trans-Lake planning study project and began design study in support of the EIS.
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Environmental Document (EIS Record of Decision) Complete
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Spring 2011
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Draft EIS was issued in August 2006.
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Right of Way Certification
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Summer 2012
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This date is for completion of all Right of Way acquisitions in the SR 520 corridor.
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Advertisement Date
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Fall 2010
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This date is for advertisement of the first major construction project in the SR 520 corridor. Offsite Construction of pontoons will begin sooner
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Operationally Complete
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Fall of 2018
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Completion of major construction in the corridor. New Floating Bridge is scheduled for opening in the fall of 2014 (March 2008 announcement by Governor Gregoire to advance bridge opening and corridor completion)
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