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Geotechnical Engineering Notebook, Geotechnical Guideline No. 16: Determination of Unknown Subsurface Bridge Foundations
There are approximately 580,000 highway bridges in the National Bridge Inventory. About 104,000 of these bridges are estimated have unknown foundations in terms of the type and/or depth. There are two general cases for unknown bridge foundations: 1. the foundation type and depth are unknown; and, 2. the foundation type is known, but its depth is unknown. These unknown bridge foundations pose a significant problem to state DOT's from a scour safety evaluation perspective. Because of the risk of scour undermining bridge foundations and the threat to public safety, the Federal Highway Administration (FHWA) and state transportation departments face the need to screen and evaluate all bridges, over rivers, streams, and in coastal areas, both on- and off-state systems, to determine their susceptibility to scour. The problem is that foundation type and depth information is needed to perform an accurate scour evaluation of each bridge.
Geotechnical Engineering Notebook, Geotechnical Guideline No. 16: Determination of Unknown Subsurface Bridge Foundations
There are approximately 580,000 highway bridges in the National Bridge Inventory. About 104,000 of these bridges are estimated have unknown foundations in terms of the type and/or depth. There are two general cases for unknown bridge foundations: 1. the foundation type and depth are unknown; and, 2. the foundation type is known, but its depth is unknown. These unknown bridge foundations pose a significant problem to state DOT's from a scour safety evaluation perspective. Because of the risk of scour undermining bridge foundations and the threat to public safety, the Federal Highway Administration (FHWA) and state transportation departments face the need to screen and evaluate all bridges, over rivers, streams, and in coastal areas, both on- and off-state systems, to determine their susceptibility to scour. The problem is that foundation type and depth information is needed to perform an accurate scour evaluation of each bridge.
Geotechnical Engineering Notebook, Geotechnical Guideline No. 16: Determination of Unknown Subsurface Bridge Foundations
1998
80 pages
Report
No indication
English
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