WSDOT Megaprograms
I405/SR 167 Corridor Program
The I-405/SR 167 Corridor Program consists of a series of long-term improvements guided by the I-405 Master Plan and SR 167 Corridor Plan. For two decades, WSDOT has worked with cities, counties, federal agencies, transit agencies and community groups to develop consensus on a long-term vision for the multimodal redevelopment of this highway that resulted in the Master Plan. Read more about the program here.
Total funding for the program: $2.8 billion
Read the latest quarterly report here.
Contact: Dawn McIntosh, Project Engineer - mcintod@wsdot.wa.gov
SR 520 Bridge Replacement and HOV Program
The SR 520 Bridge Replacement and HOV Program is enhancing public safety and mobility by replacing the highway's aging, vulnerable bridges and making significant transit and roadway improvements through the corridor. Construction of planned improvements extends from I-5 in Seattle to I-405 in Bellevue. Read more about the program here.
Total Budget: $4.51 billion
Quarterly Reports are available here under the community engagement tab.
Contact: Ron Paananen, GEC Manager - paananr@wsdot.wa.gov
Alaskan Way Viaduct Replacement Program
The SR 99 Alaskan Way Viaduct Replacement Program has contributed to the safety of the region by replacing the aged, seismically vulnerable elevated with a large diameter tunnel. The tunnel opened in February 2019 and provides a direct route through downtown Seattle. At the north end of the Battery Street Tunnel, the Program is rebuilding streets to reconnect neighborhoods separated by SR 99 since the 1950s. Read more about the program here.
Total Budget: $3.3 billion
Contact: Dawn McIntosh, Project Engineer - macintod@wsdot.wa.gov
Puget Sound Gateway Program
The Puget Sound Gateway Program is composed of two projects: the SR 167 Project in Pierce County and the SR 509 Project in King County. Both projects provide essential connections to the ports of Tacoma and Seattle, and will help ensure people and goods move more reliably through the region. Read more about this program here.
Total Budget: $1.88 billion
Contact: Chris Hoffman, Hoffmac@consultant.wsdot.wa.gov