WSDOT Projects

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Program History  |  Public Comments 

Project fact sheets

The following documents provide information on our Moving Forward projects, located in the north and south ends of the viaduct, and the viaduct's central waterfront replacement. Additional information is available using the project links to the left.

Program information

• Understanding the program's cost and funding May 2009 (pdf 522 kb)
• Comparison of the Big Dig and the Alaskan Way Viaduct and Seawall Replacement Program June 2009 (pdf 282 kb)

Moving Forward projects

• Moving forward to replace the Alaskan Way Viaduct May 2009 (pdf 744 kb)
• Breaking ground in the south end June 2009 (pdf 722 kb)

Proposed SR 99 bored tunnel

• Learning from local and international tunnel projects May 2009 (pdf 537 kb)
• Access to northwest Seattle with the SR 99 bored tunnel February 2009 (pdf 1.7 mb)
• Access to West Seattle with the SR 99 bored tunnel solution February 2009 (pdf 2.1 mb)
• All tunnels are not the same: SR 99 deep bored tunnel vs. the waterfront tunnel June 2009 (pdf 358 kb)
• Learning and listening: How the bored tunnel recommendation was developed June 2009 (pdf 316 kb)
• Public safety a top priority in bored tunnel June 2009 (pdf 251 kb)

Safety

• Emergency Closure Plan: overview, City of Seattle
• Seismic Vulnerability Analysis Report November 2007 (pdf 3.9 mb)
• Why replace the Viaduct and Seawall? March 2007 (pdf 264 kb)