An Ecological Assessment of a Bridge Demolition

Report No: 75-R54

Published in 1975

About the report:

Bridge demolition has long been known to mobilize large amounts of stream sediment in the immediate area of the structure. An ecological assessment in terms of stream macroinvertebrate samples and suspended solids measurements was made shortly before, shortly after and eight months after a demolition of a bridge deck. No environmental damage was indicated by the study even though suspended solids levels exceeded 200 parts per million shortly after demolition. The U. S. Environmental Protection Agency's proposed limits for suspended solids appear to be too low for short-term stream disturbing events.

Disclaimer Statement:The contents of this report reflect the views of the author(s), who is responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Virginia Department of Transportation, the Commonwealth Transportation Board, or the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. Any inclusion of manufacturer names, trade names, or trademarks is for identification purposes only and is not to be considered an endorsement.


  • David J. Poche´

Last updated: February 5, 2024

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