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U.S. Department of Navy D Street Bridge
Great Lakes Naval Station, Illinois
Epstein provided civil, MEP and structural engineering services for the design/build replacement of a 300 foot Span of D Street across a 30 foot ravine and Pettibone Creek at the Great Lakes Naval Station. The existing two-lane bridge consisted of three spans of reinforced concrete beams monolithic with the deck. The replaced bridge is a two-lane, three-span, precast, post-tensioned Bulb-T beam superstructure with a cast-in-place deck. The D Street Bridge substructure was replaced down to footings and the existing footings were extended and reused. The project involved sanitary sewer relocation from an existing trestle to the new bridge; water main replacement, steam and condensate replacement as well as gas, electrical and communications replacements. During construction, pedestrian movements and utility services could not be interrupted which required temporary relocations. The solution was to use a pre-fabricated steel pedestrian bridge wide enough to allow a 6' walkway and temporary utilities on the deck separated by a secure barrier to meet the needs of NAVFAC.
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