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Puget Sound Energy natural gas projects

Alaskan Way Viaduct Replacement Program and Seattle area projects

Summer 2014 project updates

Seawall-related projects
  • Seneca St - On Sept. 2, PSE's natural gas service partner, InfraSource, began work to install new intermediate pressure natural gas pipe along Seneca St between Western Ave and Alaskan Way. This work will ensure that PSE can continue to serve waterfront customers at Piers 56, 55, and 54 during Seawall construction.
  • Pier 59 - PSE and its contractors will work to install approximately 100-feet of IP natural gas main near Pier 59, between the Viaduct and Alaskan Way. This work will ensure that PSE can continue to serve waterfront customers at Piers 59 and 57 during Seawall construction. This work is anticipated to take place prior to October, the construction schedule and details are currently being finalized.
  • Columbia St - PSE and its contractors will work to install IP natural gas main along Columbia St between the Viaduct and Alaskan Way. This work is currently planned to take place in October and will allow PSE to continue to serve customers at Colman Dock during Seawall construction.
  • Under-pier work - PSE is currently coordinating with pier owners regarding plans to install temporary IP natural gas main under the pier during Seawall construction. When Seawall construction is complete the natural gas main which serves waterfront customers will return to its original location, in Alaskan Way.
12-inch natural gas main relocation project
  • PSE’s natural gas contractor, Michels Corporation, completed installation of the new pipeline (see project route) in late September 2013. Work began in July 2013.
  • PSE’s natural gas contractor, InfraSource, will be conducting remediation activities for distribution pipelines in downtown Seattle through 2014.
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    Project Overview

    In conjunction with Washington State Department of Transportation’s (WSDOT) Alaskan Way Viaduct Replacement Program and several other Seattle-area transportation projects, Puget Sound Energy is working to relocate, reconfigure and otherwise protect segments of natural gas pipeline in areas of downtown Seattle to ensure continued public safety and customer reliability.

    The Alaskan Way Viaduct Replacement Program, Waterfront Seattle and Seawall Project are collectively the largest set of associated projects to take place in the Puget Sound region in several decades. Additionally, there are six other Seattle-area transportation projects planned to take place over the next several years; many of these projects require relocation of utilities, including PSE’s natural gas system. These projects are driven by the City of Seattle, Sound Transit, Washington State Department of Transportation, the Port of Seattle and the U.S. Army Corps of Engineers.

    PSE is working closely and proactively with all the jurisdictions and agencies to ensure the continued safety and reliability of our existing natural gas system in the area.

    For information on these projects, visit the websites:
    Alaskan Way Viaduct Replacement Program

    Seattle Department of Transportation

    Waterfront Seattle and Seawall Project


    Safety

    At PSE, we know our customers, employees and the communities we serve expect to live and work around a safe and reliable natural gas system. Safety is our top priority when it comes to designing, constructing, operating and maintaining the natural gas system serving more than 770,000 PSE customers. When operating our system, we meet or exceed strict federal and state safety requirements related to pipeline safety. Click here for more information on natural gas safety.

    How does natural gas get to my home or business?

    Natural gas is a fossil fuel composed almost entirely of methane. Interstate pipelines transport natural gas to regional natural gas systems, where it is metered and delivered through a network of local mains, service lines and, ultimately, to customer homes and businesses. View How Natural Gas Gets To You or check out PSE's Source to Stove video.