Atlantic Avenue over the Intracoastal Waterway

Project Overview - Atlantic Avenue over the Intracoastal Waterway

Location: Delray Beach, FL
Client: Florida Department of Transportation

H&H provided an in-depth inspection of the structural, mechanical and electrical systems, as well as, an inspection report which included condition of the bridge, structural and mechanical load ratings and recommendations for a 25-year rehabilitation with cost estimate for this Hopkins Trunnion double-leaf bascule span built in 1952. The bridge is a gathering spot in the City of Delray Beach, hosting monthly City sponsored events. The City was closely involved with the project to ensure the bridge was rehabilitated with aesthetic improvements which fit within the architecture and color scheme of the surrounding area.

Following the report, H&H developed construction plans and specifications to implement the recommended $3.5 million rehabilitation. The rehabilitation included concrete repairs to the substructure; fender system repairs and improvements; roadway joint replacement; bridge railing replacement and bascule span rehabilitation; electrical system replacement with variable frequency motor drives; lightning protection and relay control panel replacement.

Mechanical improvements included trunnion bushing and eccentrics replacement, journal polishing and span lock replacement. Structural member repairs comprised stringers and lateral bracing replacement and floorbeam repairs, in addition to re-balancing the span. The rehabilitation also included enlargement and architectural enhancement of the control house and asbestos abatement. In addition, a walkway promenade was constructed underneath the west approach span to provide a continuous pedestrian path underneath the bridge along the waterway. H&H also provided construction support services for the project.