FHWA Resource Center
GEOTECH & HYDRAULICS TEAM
Hydraulic Engineering Circular No. 23, 2nd Edition
BRIDGE SCOUR AND STREAM INSTABILITY COUNTERMEASURES
Experience, Selection, and Design Guidance
Publication No. FHWA-NHI-01-003
March 2001
ABSTRACT:
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 have been implemented 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 and the publication Interim Procedures for Evaluating Scour at Bridges issued in September 1988 as part of the FHWA Technical Advisory T 5140.20, Scour at Bridges. T5140.20 has since been superseded by T5140.23, Evaluating Scour at Bridges dated October 28, 1991.
DOCUMENT AVAILABILITY:
To download an electronic copy:
RELATED NHI TRAINING COURSES:
FHWA-NHI-135048, Countermeasure Design for Bridge Scour and Stream Stability
FHWA-NHI-135046, Stream Stability and Scour at Highway Bridges
FHWA TECHNICAL CONTACTS:
Dr. Larry Arneson
Sr. Hydraulics Engineer, FHWA Resource Center
Phone: (720) 963-3200
Email: larry.arneson@fhwa.dot.gov
Mr. Jorge Pagán-Ortiz
Sr. Hydraulics Engineer, FHWA Headquarters
Phone: (202) 366-4604
Email: jorge.pagan@fhwa.dot.gov
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