United States Department of Transportation
i
Improving Transportation Infrastructure Resilience Against Hurricanes, Other Natural Disasters, and Weathering: Part III – Analysis of Motor Vehicle Bridges Failures Due to Hurricane Maria
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2022-08-01
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[PDF-74.94 MB]
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Corporate Contributors:Puerto Rico. Highway and Transportation Authority ; Rutgers University. Center for Advanced Infrastructure and Transportation ; United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Federal Highway Administration ; Puerto Rico. Department of Transportation and Public Works
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Edition:Final Report, 10/01/2018 – 09/30/2020
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Abstract:While the island was still recovering from the effects of Hurricane Irma, Hurricane Maria made landfall on September 20, 2017, as a strong category 4 hurricane. The hurricane affected many aspects of the transportation infrastructure, including roadway bridges. The objectives of this project were to collect, gather, and compile documented findings by diverse sources of the collapsed bridges due to Hurricane María, and to develop a common access repository of reports and multi-media multi-source information of collapsed bridges as tool for further studies. From the Puerto Rico Highway and Transportation Authority (PRHTA) bridge inventory, 19 bridges were identified to have collapse or that had a danger of imminent collapse due to severe structural damage or to severe deformations. These 19 bridges are comprehensively documented in this report inspection reports, photos and videos. Also documented in this report are examples of approach roadway collapse, which is sometimes confused with bridge collapse; examples of collapsed bridges that were not in the PRHTA inventory prior to the landfall of the hurricane on the island; and other common effects of the hurricane on roadway bridges. The compiled data and images of these structures suggest that the principal causes of the collapse were scouring of the piers and abutments, and hydrodynamic pressure combined with debris impact.
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