The mission of the project was to increase capacity, expand the terminal, create a greater system reliability and redundancy and shift ticketing and TSA security out of the center of the terminal to enable future projects.

The 115,000-square-foot concourse features six domestic aircraft gates and a variety of sustainable, electrochromic glass, a modernized central utility plant for heating and cooling the terminal, recycling receptacles, architectural design that provides natural light and compelling views, public art installations that enhance the passenger experience and more.

Sustainability:

• Geothermal water source chillers at the CUP.
• Free colling heat exchangers
• Heat Pump chillers
• Electro chromatic glazing on 19% of the exterior skin. The “smart” glass adjusts to fluctuations in solar radiation to manage daylight and heat gain to save energy.
• LEED v4 Silver Certification.
• Features energy efficient, programmable lighting.
• Water-conserving restroom facilities.
• Light-colored building and paving materials that retain less heat, reducing energy use for climate control and mitigating the heat-island effect.
• Waste-reduction focus with recycling bins throughout the concourse and 80 percent of construction waste diverted from landfills.

Project Highlights: 

• The new Concourse D added six gates, associated ramp amenities and function spaces. 
• Commercial Airport Architectural Project of the Year, American Association of Airport Executives (SEA-AAAE), 2021
• Aviation Project of the Year, DBIA, 2021
• Emphasis on human health and well-being with green cleaning practices, water bottle filling stations for hydration, an abundance of natural light, and multiple art installations.