12.19.2014

E.L. Robinson's Dodridge Street Bridge has won many awards from professional organizations such as the American Society of Civil Engineers, Women's Transportation Seminar, Association for Bridge Construction & Design, and the Precast/Prestressed Concrete Institute. This bridge, which appears to be a slender, single-span concrete bridge, is actually a three-span bridge with hidden end spans. The short end spans are restrained by rock anchor tiedowns at each abutment to provide stability, and the concrete tub girders were post-tensioned in stages as the dead load was applied, allowing the girders to function as continuous beams. Achieving this delicate balance wasn’t easy, as the construction of this bridge required a careful sequencing of the post-tensioning and tie-down forces to ensure the tub girders were stable throughout all stages of construction and not over stressed.