Southwest Seattle Fiberoptic Cable Installations

Map showing location of fiberoptic cable installation

Map showing location of fiberoptic cable installation

Project Description

Seattle City Light crews will be replacing overhead fiberoptic cables between several utility substations in the southwest Seattle area. This work is needed to provide reliable communications between City Light's electrical substations and operations network.

Location

Southwest Seattle

What's Happening Now?

Project Update (March 2021): Crews have completed two-thirds of the fiber installations between the South and Delridge substations. Crews will begin the final fiber work to the Delridge Substation in mid-April 2021. Due to equipment availability, the fiber work between the Delridge to Duwamish substations has been put on hold. This work may resume in August 2021.

Community Benefits

  • This work is needed to provide reliable communications between City Light's electrical substations and operations network.

Anticipated Impacts

  • Crews will be replacing overhead fiberoptic cables between several substations in the southwest Seattle area. The planned cable routes will run between the following City Light facilities:
    • South Substation to Delridge Substation
    • Delridge Substation to Duwamish Substation
  • Customers can expect temporary parking, sidewalk and traffic restrictions during this project. Flaggers will direct traffic through the work zone.
  • Some noise is expected from construction activities.
  • Maintenance power outages are not expected. If outages are needed, customers will be notified in advance.
  • During this project, City Light will have the opportunity to upgrade infrastructure and replace utility poles that are in poor condition.
  • The project will require rolling slowdowns on State Route (SR) 99 and SR 509. Details about this phase of work will be shared with customers once a construction schedule has been determined.

  • Construction Start: Mid-July 2020
  • Daily Work Schedule: Mon-Fri: 7 a.m.-5 p.m., Sat/Sun: 8 a.m.-5 p.m. 

Community Outreach Team
SCL_CommOutreach@seattle.gov