H&H provided bridge inspection, structure analysis, and engineering design services to rehabilitate the Main Street Bridge.
Carrying four lanes of US 1 (northbound and southbound) over the St. Johns River in downtown Jacksonville, the 1,679-foot long Main Street Bridge consists of 17 spans, including the 386-foot Warren through truss vertical lift span. The bridge was constructed in 1941.
H&H initially inspected the bridge to verify the scope of work involved with the replacement and upgrades to the electrical operating system, as well as the replacement of the mechanical systems for the vertical lift span and the replacement and rehabilitation of structural steel components supporting the control house.
During the design phase, H&H developed engineering construction documents for the electrical, mechanical, and control house rehabilitation items identified during the first phase. In addition, a structural analysis of the towers and lift span for a new concrete deck was performed to determine feasibility. The new machinery was designed to meet current AASHTO requirements.
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