Pacific Builder & Engineer

Dedicated to the people who make our built environment better and safer. We tell your stories and celebrate your successes.

Register with us and receive industry news and content only available to subscribers.


Indianapolis, IN, USA (HQ)

903 E. Ohio St., Indianapolis, IN 46202

Call: (317) 423-2325

HOK, Hensel Phelps Lead Seattle-Tacoma International Airport’s North Main Terminal Modernization

SEATTLE, WA — HOK and general contractor Hensel Phelps, in partnership with Alaska Airlines and the Port of Seattle, are leading the modernization of Seattle-Tacoma International Airport’s north main terminal. The SEA Gateway Project will rejuvenate the 40-year-old check-in lobby and the existing promenade. An expansion of the security checkpoint will accelerate processing, and upgrades to the baggage handling system will improve speed and reliability. Introducing new technology and electrical, mechanical, plumbing, and structural elements will also improve the airport’s functionality and passenger convenience.

“We are excited to partner with Hensel Phelps to reimagine the journey of Alaska Airlines’ customers at Seattle-Tacoma,” said Todd Buchanan, HOK’s Principal-in-Charge on the project. “From the curbside through security and to baggage claim, the design will increase passenger throughput and enhance the overall travel experience.”

The new design will introduce a modern, open space with ample daylight, reflecting the Pacific Northwest’s natural landscape. The terminal will offer travelers more check-in options, including bag tag stations, self-service bag drops, and a bridge-level check-in area. Innovative technology will increase capacity and streamline operations, while intuitive wayfinding and strategic use of lighting will improve passenger flow.

HOK’s design approach prioritizes sustainability, incorporating environmental, cost, and social implications. This aligns with the Port of Seattle’s sustainability goals of reducing GHG emissions by 50 percent by 2030 and achieving carbon neutrality by 2050. The SEA Gateway Project is set to achieve LEED Silver certification.

Construction will occur in multiple phases to minimize disruptions to current airport operations. With the first phase of construction already in progress and the second phase of design nearing completion, the renovated terminal is expected to be fully operational by 2026.

Volvo CE
Your local Volvo Construction Equipment dealer
PacWest Machinery
Superior Industries
Your local Superior dealer
Westate Machinery Co