Failure Investigation of South Florida Pedestrian Bridge Collapse

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Description

On March 15, 2018, a 175-foot-long post tensioned concrete pedestrian bridge collapsed over US Route 41 in southeastern Florida, resulting in six fatalities and injuring eight others. The bridge utilized a unique sculptural design incorporating a concrete truss and was constructed using the Accelerated Bridge Construction technique. The structure was intended to provide safe passage over an 8-lane highway to the nearby neighborhood. The authors’ team mobilized to the collapse site on March 18, 2018 on behalf of their client, one of the major insurance carriers for a member of the bridge project team. The investigation team was tasked with documenting the post-loss condition of the bridge, performing a detailed structural analysis to determine the cause and origin of the collapse, evidence collection, and developing conceptual repair/retrofit design options.

This presentation will discuss the design of the bridge, the status of construction immediately prior to the collapse, the on-site investigation and analysis performed by the authors when tasked with determining the cause and origin of the failure, the National Transportation Safety Board (NTSB) findings, and the results of the NTSB investigations.

Course will award 1. hours of continuing education
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This webinar was live only. There is no recording available.

Contributors

Perry Pinto, P.E.

Perry Pinto, P.E., is a Senior Engineer at a global, multi-disciplinary forensic engineering consulting firm, where he provides initial response, condition assessment, cause and origin determination, and forensic evaluation of structures damaged by natural disasters, collapses, fires, building envelope failures, and other large and complex losses. Prior to his endeavors in forensic engineering, Mr. Pinto worked in the power industry successfully contributing to the completion of complex structural engineering projects for more than a decade. He specialized in the design and analysis of safety-related structures for nuclear generating facilities.
Bradley East, P.E.

Bradley L. East, P.E., is Director of Operations for Polaris Forensics, Inc. Bradley has over 15 years of experience in forensic evaluations, concrete and materials testing, and structural design. He specializes in concrete durability issues, structural analysis and failure analysis, and has considerable experience evaluating damage from construction deficiencies, design errors, and structural collapse, among other failure types. Bradley has testified as an expert for various matters and has an extensive list of industry publications and presentations.

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Description

Contributors

Perry Pinto, P.E.

Bradley East, P.E.