A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
I-90 Over Cattaraugus Creek Bridge Scour Reevaluation and Plan of Action
The New York State Thruway Authority (NYSTA) has recently completed a bridge scour reevaluation and plan of action (POA) for the I-90 bridge over Cattaraugus Creek, located in Western New York State. Following the collapse of the I-90 bridge over Schoharie Creek in 1987, the Authority evaluated its entire 560 mile system, and the I-90 bridge over Cattaraugus Creek was designated, as a scour critical bridge because the foundations of the bridge were found by calculation to be of insufficient depth to prevent the bridge from collapsing when subjected to theoretical scour from the 500-year flood event. Highlights of the scour reevaluation and POA include: a 30% reduction in theoretical local pier scour predictions using current HEC-18 pier scour equations and new survey; pier cofferdam survivability analyses using updated record information and analyses methods; troubleshooting of previously installed scour monitoring devices and field assessment of previously constructed scour countermeasures; development of improved flood and post-flood monitoring and inspection procedures; and recommendations for additional scour countermeasures to protect the bridge for its remaining useful life. During the scour reevaluation process, on August 10, 2009, the bridge experienced the second largest flood since construction of the bridge, a 50-year flood event.
I-90 Over Cattaraugus Creek Bridge Scour Reevaluation and Plan of Action
The New York State Thruway Authority (NYSTA) has recently completed a bridge scour reevaluation and plan of action (POA) for the I-90 bridge over Cattaraugus Creek, located in Western New York State. Following the collapse of the I-90 bridge over Schoharie Creek in 1987, the Authority evaluated its entire 560 mile system, and the I-90 bridge over Cattaraugus Creek was designated, as a scour critical bridge because the foundations of the bridge were found by calculation to be of insufficient depth to prevent the bridge from collapsing when subjected to theoretical scour from the 500-year flood event. Highlights of the scour reevaluation and POA include: a 30% reduction in theoretical local pier scour predictions using current HEC-18 pier scour equations and new survey; pier cofferdam survivability analyses using updated record information and analyses methods; troubleshooting of previously installed scour monitoring devices and field assessment of previously constructed scour countermeasures; development of improved flood and post-flood monitoring and inspection procedures; and recommendations for additional scour countermeasures to protect the bridge for its remaining useful life. During the scour reevaluation process, on August 10, 2009, the bridge experienced the second largest flood since construction of the bridge, a 50-year flood event.
I-90 Over Cattaraugus Creek Bridge Scour Reevaluation and Plan of Action
Avery, Kenneth (author) / Morris, Craig (author) / Goodison, Dean (author)
World Environmental and Water Resources Congress 2010 ; 2010 ; Providence, Rhode Island, United States
2010-05-14
Conference paper
Electronic Resource
English
I-90 Over Cattaraugus Creek Bridge Scour Reevaluation and Plan of Action
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