Sea-Tac Airport Third Runway Construction Management ($250M)

The Port of Seattle completed a third parallel runway at Sea-Tac Airport, a project which involved paving a new, 150 feet wide, 17 inch thick, 8,500 feet runway with eight connecting taxiways. The completion of the Third Runway included all supporting infrastructure, including expansion of the North safety area of both existing runways to meet FAA requirements and construction of a facility to house lighting control equipment for the entire airfield.

Shen Consulting provided construction management inspection oversight services for the Port of Seattle on all aspects of the Third Runway construction and related projects, including:

  • Import and placement of 16 million cubic yards for the runway embankment
  • Construction of seven Mechanical Stabilization Earth (MSE) walls
  • Installation of storm, sanitary sewer and water systems
  • Construction of a 5.5 acre feet storm water vault
  • Installation of electrical duct banks and other electrical systems
  • Installation of Portland Cement Concrete pavement for the Third Runway
  • Installation of Asphalt Cement pavement for roads and runway shoulders
  • Establishment of sediment erosion control and storm water management systems
  • Oversight of QA/QC of the project
  • Monitoring payment and import quantities
  • Reporting progress to project engineer and construction manager

The Third Runway was completed in November 2008 under budget and on schedule.

“Since 2004, Shen Consulting’s knowledge and expertise in airfield construction has been key to the success of the Third Runway, the largest project ever completed at Sea-Tac Airport.”

– John Rothnie, Airfield Program Leader