Bridge Scour and Stream Instability Countermeasures: Experience, Selection and Design Guidance

This document provides guidelines for the selection and design of appropriate countermeasures to mitigate potential damage to bridges and other highway components at stream crossings. A countermeasure matrix is presented as an aid to identify most types of countermeasures which have been used by State highway agencies (SHAs) for bridge scour and stream instability problems. The matrix supports the selection of appropriate countermeasures considering such characteristics as the functional application, suitable river environment, and estimated allocation of maintenance resources. In addition, SHAs with installation experience and design guideline references are included for each type of countermeasure. Design guidelines for the following seven countermeasures are provided based on information obtained from SHAs: bendway weirs/stream barbs, soil cement, wire enclosed riprap, articulated concrete block systems, articulating grout filled mattresses, Toskanes, and grout filled bags. Design Guideline 8 presents guidance for pier and abutment riprap protection from Hydraulic Engineering Circular 18.

• Record URL:
  https://rosap.ntl.bts.gov/view/dot/57301
• Corporate Authors:

  Ayres Associates, Incorporated

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

  National Highway Institute

  Federal Highway Administration
  4600 N Fairfax Drive, Suite 800
  Arlington, VA  United States  22203

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Lagasse, P F
  • Byars, M S
  • Zevenbergen, L W
  • Clopper, P E
• Publication Date: 1997-7

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 134p
• Serial:
  • Hydraulic Engineering Circular
  • Issue Number: 23
  • Publisher: Federal Highway Administration

Subject/Index Terms

• TRT Terms: Bridge design; Countermeasures; Guidelines; Highway bridges; Scour; State highway departments; Streams
• Subject Areas: Bridges and other structures; Design; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 01782025
• Record Type: Publication
• Report/Paper Numbers: FHWA HI-97-030, HEC-23
• Contract Numbers: DTFH61-92-00049
• Files: NTL, TRIS, ATRI, USDOT
• Created Date: Sep 20 2021 4:58PM