New main and satellite terminals, pedestrian/utility tunnel, pedestrian bridges, viaduct. Fast track, phased demolition, blast analysis. First airport to be LEED certified.

The Delta Terminal A project comprised two large terminals, a pedestrian/utility tunnel, two elevated pedestrian bridges linked to existing elevated walkways, a new departures-level viaduct, and a completely reconstructed site. Nine separate construction document packages were issued as a result of the aggressive fast-track design schedule. The terminal buildings (the first to be LEED certified) featured heat-reflecting roofs and windows, stormwater filtration, and other environment friendly features. As blast engineer, Weidlinger designed the terminal structures, which were adjacent to public roadways, to comply with FAA-mandated guidelines for protection from vehicle explosions. As structural engineer of record, Weidlinger was also responsible for preparing the contract documents for the phased demolition of the five-story, post-tensioned concrete terminal building that was replaced.

The three-story, 375,000-square-foot main terminal was a steel moment-framed structure founded on deep-pile foundations. Built in two stages, it required several temporary support structures to maintain existing operations. The three-story, 290,000-square-foot satellite terminal was constructed over the Ted Williams Tunnel, an extension of Interstate 90. It was a steel moment-framed structure founded on shallow concrete footings. The pedestrian/utility tunnel was a reinforced-concrete box, more than 700 feet long, founded 30 feet below grade. The departures viaduct was a 13-span, cast-in-place, post-tensioned concrete box superstructure, founded on deep, large-diameter, reinforced-concrete drilled shafts.

Completion Date: 2005
Location: Boston, Massachusetts
Owner or Client: Delta Airlines
Prime Consultant(s): Hellmuth Obata & Kassabaum (HOK)