Bridge Scour and Stream Instability Countermeasures: Experience, Selection and Design Guidance. Third Edition. Volume 1

This document 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 and guidance for developing a Plan of Action for scour critical bridges are outlined, and guidance is provided for scour monitoring using portable and fixed instrumentation. The results of recently completed National Cooperative Highway Research Program (NCHRP) projects are incorporated in the design guidance, including: countermeasures to protect bridge piers and abutments from scour; riprap design criteria, specifications, and quality control; and environmentally sensitive channel and bank protection measures. This additional material required expanding HEC-23 to two volumes. Volume 1 now contains a complete chapter on riprap design, specifications, and quality control as well as an expanded chapter on biotechnical countermeasures. The guidance on scour monitoring instrumentation has been updated and now includes additional installation case studies. Volume 2 contains 19 detailed design guidelines grouped into six categories, including countermeasures for: (1) stream instability, (2) streambank and roadway embankment protection, (3) bridge pier protection, (4) abutment protection, (5) filter design, and (6) special applications.

  • Record URL:
  • Corporate Authors:

    Ayres Associates, Incorporated

    3665 JFK Parkway, Building 2, Suite 200
    Fort Collins, CO  United States  80525

    Federal Highway Administration

    Office of Bridge Technology
    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    National Highway Institute

    Federal Highway Administration
    1310 North Courthouse Road, Suite 300
    Arlington, VA  United States  22201
  • Authors:
    • Lagasse, P F
    • Clopper, P E
    • Pagan-Ortiz, J E
    • Zevenbergen, L W
    • Arneson, L A
    • Schall, J D
    • Girard, L G
  • Publication Date: 2009-9


  • English

Media Info

  • Media Type: Web
  • Edition: Third Edition - Volume 1
  • Features: Appendices; Figures; Glossary; Photos; References; Tables;
  • Pagination: 256p

Subject/Index Terms

Filing Info

  • Accession Number: 01153611
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-NHI-09-111, HEC-23
  • Contract Numbers: DTFH61-06-D-00010/T-06-001
  • Files: TRIS, USDOT
  • Created Date: Mar 30 2010 9:16AM