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Physiographic Implications of Stream Stability at Bridges

Johnson, Peggy A.

At bridges, channel instabilities can cause undermining of the bridge foundations due to channel bed degradation, undermining and outflanking of bridge abutments and piles in the floodplain due to channel widening, and undermining of abutments and onset of local scour as the channel nears an abutment or floodplain pilings due to lateral migration. Thus, attention to channel conditions in the vicinity of bridges is an important aspect of bridge maintenance. Attention to the physical characteristics of bridge crossings in the various physiographic regions can lead to sustainable solutions to stabilizing channels at bridge-stream intersections.

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Physiographic Implications of Stream Stability at Bridges

Johnson, Peggy A.

At bridges, channel instabilities can cause undermining of the bridge foundations due to channel bed degradation, undermining and outflanking of bridge abutments and piles in the floodplain due to channel widening, and undermining of abutments and onset of local scour as the channel nears an abutment or floodplain pilings due to lateral migration. Thus, attention to channel conditions in the vicinity of bridges is an important aspect of bridge maintenance. Attention to the physical characteristics of bridge crossings in the various physiographic regions can lead to sustainable solutions to stabilizing channels at bridge-stream intersections.

Physiographic Implications of Stream Stability at Bridges

Johnson, Peggy A.

At bridges, channel instabilities can cause undermining of the bridge foundations due to channel bed degradation, undermining and outflanking of bridge abutments and piles in the floodplain due to channel widening, and undermining of abutments and onset of local scour as the channel nears an abutment or floodplain pilings due to lateral migration. Thus, attention to channel conditions in the vicinity of bridges is an important aspect of bridge maintenance. Attention to the physical characteristics of bridge crossings in the various physiographic regions can lead to sustainable solutions to stabilizing channels at bridge-stream intersections.

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Title:

Physiographic Implications of Stream Stability at Bridges

Contributors:

Johnson, Peggy A. (author)

Conference:

Watershed Management Conference 2005 ; 2005 ; Williamsburg, Virginia, United States

Published in:

Managing Watersheds for Human and Natural Impacts ; 1-6

Publication date:

2005-07-13

ISBN:

DOI:

https://doi.org/10.1061/40763(178)116

Type of media:

Conference paper

Type of material:

Electronic Resource

Language:

English

Keywords:

Dams , Environmental issues , Ecosystems , Stream improvement , Chesapeake Bay , Channels , Water resources , Restoration , Rivers and streams , Watersheds , Flood plains , Human factors , Bridge foundations , Fires

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