The Alaskan Way Viaduct, an elevated section of State Route 99 in Seattle, was built in the 1950s, and decades of daily wear and tear have taken their toll on the structure. Because of the viaduct’s age and vulnerability to earthquakes, replacing it is critical to public safety.

Cost: $3.1 billion (for complete program)
Location: Seattle, WA
Seattle Tunnel Partners: Dragados USA and Tutor Perini Corp.
Scope: 3D Modeling of all electrical systems; MEP Clash coordination; Shop drawings for all electrical systems

Project Details

  • Category:   Transportation
  • Client: Date: September 9, 2014