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Title: Bridge Scour and Stream Instability Countermeasures Experience, Selection, and Design Guidance Third Edition, Volume 2

Description: Bridge Scour and Stream Instability Countermeasures: Experience, Selection, and Design Guidance, Hydraulic Engineering Circular No. 23 (HEC-23), identifies and provides design guidelines for bridge scour and stream instability countermeasures that are suggested for use by various State departments of transportation (DOTs) in the United States. Countermeasure experience, selection, and design guidance are consolidated from other FHWA publications in this document to support a comprehensive analysis of scour and stream instability problems and provide a range of solutions to those problems. Selected innovative countermeasure concepts and guidance derived from practice outside the United States are introduced. Management strategies for developing a Plan of Action (POA) for scour critical bridges are outlined, and guidance is provided for scour monitoring using portable and fixed instrumentation.

There are two companion documents, Evaluating Scour at Bridges (HEC-18) and Stream Stability at Highway Structures (HEC-20). These three documents contain updated material from previous editions.

FHWA Publication Number: NHI-09-112

Publication Year: 2009

Document Links: PDF (11 mb)

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Dave Henderson
Office of Bridges and Structures

Joe Krolak
Office of Bridges and Structures

Updated: 09/06/2013

United States Department of Transportation - Federal Highway Administration