Developing a bridge scour warning system : final report.
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2016-09-01
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Edition:Final report
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Abstract:Flooding and scour can be major threats to the integrity of bridges. During flood events, scour at bridge piers ; and abutments can undermine the foundations of the bridge, causing significant damage or even total structure loss. ; Because scour occurs below the water level during a large flood event, it can be difficult to detect and may go ; unnoticed unless a targeted inspection is performed. ; The Kansas Department of Transportation (KDOT) is required by federal mandate to establish and maintain a ; bridge scour plan of action for all scour-critical bridges in the state. A plan of action can include the implementation of ; scour countermeasures to protect and stabilize a bridge and/or scour monitoring. Bridge scour monitoring presents ; multiple challenges for bridge owners, including state Departments of Transportation (DOTs). ; This research project surveyed in situ and ex situ monitoring options with particular attention on warning ; system options in the public domain. In situ monitoring can include portable and/or fixed devices for detecting bridge ; scour. Ex situ monitoring implies a statewide system that issues scour alerts to trigger bridge closures and/or ; inspections based on hydrologic conditions (rainfall and/or streamflow). ; A systematic statewide system would be preferable for monitoring scour-capable events at bridges across the ; state. KDOT could leverage existing United States Geological Survey (USGS) and National Weather Service (NWS) ; tools to monitor scour-critical bridges or pursue a vendor to offer a turn-key solution. For critical locations, additional ; measures could be implemented at specific sites to offer more information or a higher level of monitoring.
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Main Document Checksum:urn:sha256:7fde5af58475c585607a0223547ae15a1dbe0f2fd1930de401566bcde7da86d8