SUPERSTRUCTURES’ Associate Principal, Lorie Riddle, RA (center) and Architectural Conservator, Nityaa Iyer (left) examine the condition of ornamental plaster on the rotunda ceiling of the Alexander Hamilton U.S. Custom House—from a platform 40 feet above the floor.

SUPERSTRUCTURES was selected by the United States General Services Administration (GSA) to conduct a $100 million restoration of the Custom House, a National Historic Landmark designed by Cass Gilbert in 1907. The top-to-bottom restoration of the building’s envelope includes remediation of water infiltration in the cellar and sidewalk vaults as well as restoration of masonry, windows, skylights, and the rotunda ceiling.

We’re grateful for this opportunity to preserve one of the most historic and iconic buildings in the city, just steps from our Wall Street office.