Seattle City Light is planning to move existing facilities and add electrical vaults in preparation for future construction to replace the SR 99 Alaskan Way Viaduct. The north portal of the planned bored tunnel would affect major power lines (feeders) that are underground and overhead at Harrison Street and Aurora Avenue N.
Seattle City Light will be reinforcing underground conduits (duct run) near 6th Avenue North on Thomas Street. Heavy equipment will be used to expose and reinforce the duct run.
The crews will be working on the south side of Thomas from 6th Avenue North to Aurora Avenue North. The work is primarily in the south side parking lane and the daily work hours are 9 a.m. to 3 p.m.; Monday to Friday. This will be a three to four week project. The work is needed to support the duct run during tunneling for the SR 99 Tunnel project. The work will increase safety and electrical reliability in the area.
What you can expect:
- No planned outages.
- Access along 6th Avenue and Thomas Street will be maintained.
- There will be noise early in the project due to saw-cutting and breaking concrete to access the duct run.
- The sidewalk on the south side of the street will be accessible.
- Approximately 3 parking slots on Thomas Street will be used to accommodate City Light trucks.