local pier scour · general scour long term scour, aggradation or degradation, river migration may...
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![Page 1: Local Pier Scour · General Scour Long term scour, aggradation or degradation, river migration may occur whether or not there was a bridge crossing or constriction in the stream](https://reader033.vdocuments.mx/reader033/viewer/2022051800/5ac58f1b7f8b9a2b5c8dabb1/html5/thumbnails/1.jpg)
Local Pier Scour
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![Page 2: Local Pier Scour · General Scour Long term scour, aggradation or degradation, river migration may occur whether or not there was a bridge crossing or constriction in the stream](https://reader033.vdocuments.mx/reader033/viewer/2022051800/5ac58f1b7f8b9a2b5c8dabb1/html5/thumbnails/2.jpg)
Pier ScourSee full presentation at: \\ad\bridge\Data\Share\Bridge Scour presentation
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General ScourLong term scour, aggradation or degradation, river migration
may occur whether or not there was a bridge crossing or constriction in the stream. Picture shows degradation caused by gravel mining in the stream.
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![Page 4: Local Pier Scour · General Scour Long term scour, aggradation or degradation, river migration may occur whether or not there was a bridge crossing or constriction in the stream](https://reader033.vdocuments.mx/reader033/viewer/2022051800/5ac58f1b7f8b9a2b5c8dabb1/html5/thumbnails/4.jpg)
Typical Local Abutment Scour Problem: Abutment Fill Loss
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Monitoring SignBridge 6502 TH 32 over South Branch Wild Rice River
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Cross Section of Scour Hole
1120.001125.001130.001135.001140.001145.001150.001155.001160.00
1000.00 1050.00 1100.00 1150.00
Survey 2004 Survey- Original Pier Footing Seal
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Online Resources
Bridge Scour website:http://ihub/bridge/hydraulics/scour/index.html
GIS Benchmark website:http://www.dot.state.mn.us/maps/geodetic/
Mn/DOT Interactive Basemap:http://www.dot.state.mn.us/maps/gisweb/
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