Early work in support of moving Seattle City Light transmission lines as part of the eventual replacement of the Alaskan Way Viaduct will continue over the next several weekends.
Location: South of South King Street
Crews will be drilling holes to expose the location of underground utility lines before starting construction. This work is done to prevent damage to those lines. The work, called potholing, will occur in coordination with other area projects
As multiple projects are conducting potholing activities in Pioneer Square, crews have coordinated with the Washington State Department of Transportation, the Seattle Department of Transportation and others to schedule necessary work while minimizing disruptions to the neighborhood. This Sunday, May 19, crews will continue investigative fieldwork for Phase 2 of the Central Waterfront Transmission Line Relocation Project. This weekend, potholing activities will occur out of sight and within the fenced off work area maintained by the Seattle Tunnel Partners (STP). Although potholing for this project will occur on Sunday, please note that there will be active work in the area on Saturday as well.
Anticipated fieldwork activities over the next few weekends:
- Crews will be working from 9 a.m. to 6 p.m. on Sunday.
- Potholing activities are anticipated to wrap up over the next several weekends.
- No weekday fieldwork is anticipated for this project, although crews will be in the area working on other projects during the week. Waterfront Seattle crews will be conducting potholing activities on Railroad Way S for Waterfront Seattle. To learn more about this work, check out Waterfront Seattle’s flyer.
What is the Central Waterfront Transmission Line Relocation Project?
Transmission lines that power Seattle have historically been attached to the vulnerable Alaskan Way Viaduct. Seattle City Light has been working to complete full relocation of these transmission lines along Seattle’s waterfront in advance of viaduct demolition. City Light is ready to complete the design for permanent relocation of the final section of central waterfront transmission lines. This section of 115 kV transmission lines runs from King Street to Yesler Way (see map). Seattle City Light is working to identify a route for the transmission lines in an underground duct bank in a path just west of the existing viaduct.
For more information: