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Scour at bridge sites is typically classified as contraction (or constriction) scour and local scour. Contraction scour occurs over a whole cross-section as a result of the increased velocities and bed shear stresses arising from a narrowing of the channel by a construction such as a bridge.
Bridge twisted and collapsed over State Route 49 while under construction. The expressway and the bridge itself were closed to the public at the time. 1 killed, 9 injured [54] Total collapse Bridge collapsed as workers were screeding a concrete surface on the bridge. The machine had made it to the bridge's midspan before the entire bridge ...
Hydrodynamic scour, the removal of sediment such as sand and silt from around an object by water flow Bridge scour, erosion of soil around at the base of a bridge pier or abutments via the flow of air, ice, or water; Tidal scour, erosion of substrate via tidal flow; Ice scour or ice gouge, a drifting ice feature that scrapes the seabed
Pages in category "Bridge disasters caused by scour damage" The following 13 pages are in this category, out of 13 total. This list may not reflect recent changes.
Hydrodynamic scour is the removal of sediment such as silt, sand and gravel from around the base of obstructions to the flow in the sea, rivers and canals. Scour, caused by fast flowing water, can carve out scour holes, compromising the integrity of a structure.
The Schoharie Creek Bridge was a New York State Thruway bridge over the Schoharie Creek near Fort Hunter and the Mohawk River in New York State. On April 5, 1987, it collapsed due to bridge scour at the foundations after a record rainfall. The collapse killed ten people. The replacement bridge was completed and fully open to traffic on May 21 ...
Bridges may collapse due to bridge scour around one or more bridge abutments or piers. In 2004, the remnants of Hurricane Frances, and then Hurricane Ivan, caused a large number of washouts in western North Carolina and other parts of the southern Appalachian Mountains, closing some roads for days and parts of the Blue Ridge Parkway for months.
Tidal scour can be determined by looking at the change in bathymetry over time. Bathymetry of tidal channels is determined using multi-beam sonar or LiDAR. By comparing cross-sections of channel bathymetry over several years and at various distances in the tidal channel, the amount of tidal scour can be quantified. [2] [better source needed] [4 ...