Seattle City Light LARRY WEIS, General Manager and CEO
Central Waterfront Transmission Line Relocation Project

Project Background

Project Background
Transmission lines that power Seattle have historically been attached to the Alaskan Way Viaduct. Since 2008, Seattle City Light has been working to complete the full relocation of these transmission lines along Seattle’s waterfront. The Central Waterfront Transmission Line Relocation Project (TLR) must be completed before Alaskan Way Viaduct removal, Waterfront Seattle and new Alaskan Way construction.

Central Waterfront Map


We relocated transmission lines near the sports stadiums and Pioneer Square before the southernmost mile of the viaduct was demolished in 2010. In 2012, Seattle City Light completed the relocation of a section of these transmission lines along the central waterfront, moving them to a permanent location underground between Yesler Way and the Union Street substation. Today, Seattle City Light is ready to complete the permanent relocation of the final section, Phase 2, from Yesler Way to South King Street.
The first step toward a new waterfront
The Central Waterfront Transmission Line Relocation Project must be completed before Alaskan Way Viaduct removal. Thus, work is a vital preliminary step in the transformation of the Central Waterfront.


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