Sea-Tac North Satellite Modernization

Hensel PhelpsProjectsAviationSea-Tac North Satellite Modernization

About the Project

The Seattle-Tacoma International Airport North Satellite Modernization is an unprecedented working arrangement between the Port of Seattle and Alaska Airlines with the goal to better serve passengers. The 40-year-old north satellite received only limited upgrades during its lifetime and is in need of modernization, renewal and replacement of many of its basic systems.


The $480 million renovation and expansion of the existing North Satellite Terminal will increase the number of aircraft gates from 12 to 20 and extend the building 181,000 SF to better serve Alaska Airlines’ passengers. The project will add an upper level mezzanine and new rooftop Alaska Airlines Board Room Lounge. The baggage handling system, elevators and stairs will be extensively refurbished. Additionally, the scope will include significant seismic, mechanical, electrical and communication upgrades. The project is being designed and built to achieve LEED Silver certification.


For more information on the North Satellite Modernization project, please visit the Port of Seattle’s Programs and Projects page.

Quick Facts

  • Location SeaTac, WA
  • Client Port of Seattle | Seattle-Tacoma International Airport
  • Industry Aviation
  • Line of Business Construction
  • Completion Date January 2021
  • Duration 60 Months
  • Contract Value $ 480,000,000
  • Sustainability Targeting LEED Silver
  • Square Footage 181,000 SF

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