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TrueNorth Commons Pedestrian Bridge

Matrix was the lead structural engineer for the TrueNorth Commons Pedestrian Bridge. The Visitor Center and the hotel at the Air Force Academy Northgate Entrance constitute an iconic gateway to the United States Air Force Academy in Colorado Springs, Colorado. The TrueNorth Commons Pedestrian Bridge provides access from the hotel to the Visitor Center, crossing Northgate Boulevard. The bridge is a two-span, 204-foot-long, precast bulb-tee girder bridge that is 21 feet wide. It was designed to be as sleek and visually slender as possible to meet vertical clearance requirements over Northgate Boulevard. The lighting and aesthetics of the bridge match the rest of the architecture on campus.

The bridge utilizes a triangular-shaped middle pier that has a hollow opening between columns. Due to the location of the pier in relation to Northgate Boulevard, it was designed for collision loads. The pier’s unique shape required a higher strength concrete mix design and a careful layout of steel reinforcements to ensure all the rebar fit within the cages.