Since the new superstructure is tied into the existing steel structure, the contractor carefully planned steel fabrication, including detailed surveys, field measurement verifications and 3D modeling to locate and integrate utilities.

Limited as-built documents existed for the structure. As demolition progressed, crews uncovered varying connection types, deterioration and unknown conditions. The team developed several design options that could be applied based on actual conditions, using new data to make modifications as work progressed. The project team often redesigned the superstructure on the fly, but crews successfully made all tie-ins with the original structure without service interruptions or schedule delays.

Documenting work, from the initial surveys and 3D scans to drone footage resulted in a revitalized superstructure.