Alaskan Way Viaduct, Electric Lines Relocation (Seattle)

Client: Seattle City Light, Washington State Department of Transportation (WSDOT)

Coluccio teams were tasked with the removal and relocation of one mile of Seattle City Light transmission lines attached to the underside of the Alaskan Way Viaduct structure to underground ducts and vaults. After the 2001 Nisqually Earthquake rendered the Viaduct unsafe, the City couldn't lose two 115-kv lines and five 13.8-kv feeder circuits needed to power Downtown Seattle.

Managing unique environmental concerns, Coluccio worked with both Seattle City Light and WSDOT to coordinate the project, avoid power outages, and minimize disruption at Safeco Field, the central waterfront, two rail yards, several freight facilities, and Port of Seattle facilities.

In a little more than one year, Coluccio teams completed the project as requested and within the $21.8 million budget, . All transmission lines are operational and protected in case of a future natural disaster, in place to allow for the removal of the Viaduct in 2011.

"...a great example of dealing with high stakeholder expectations, a high level of scrutiny, making timely decisions and working together to ensure a successful project."
- Paul E. Johnson, Project Engineer, Washington Department of Transportation