Evaluation of Bridge Scour Research: Pier Scour Processes and Predictions

Since about 1990, significant resources have been devoted by state highway agencies, federal agencies, and others to conduct research on bridge scour. Research has been conducted in the following areas: (a) prediction of scour at bridge piers and abutments, (b) selection and design of bridge-scour countermeasures, (c) stream bank protection, (d) tidal scour, and (e) analysis of river systems and methodologies for predicting channel instability. In 1997, NCHRP Project 24-08, "<em>Scour at Bridge Foundations: Research Needs</em>," completed a comprehensive strategy to identify and guide bridge-scour-related research. In developing this strategy, it was necessary to assess the validity and applicability of research related to bridge scour and fluvial system instability; define the state of practice; identify gaps, deficiencies, and potential improvements in current scour technology; and make recommendations for future research. Using the comprehensive strategy developed under Project 24-08, the American Association of State Highway and Transportation Officials (AASHTO) has, through NCHRP, initiated and completed a number of bridge-scour-related research studies. In addition, agencies and institutions other than NCHRP have conducted bridge-scour-related research studies related to the comprehensive strategy. The AASHTO Technical Committee on Hydrology and Hydraulics is currently developing two new manuals: "<em>Policy for Design of Highway Drainage Facilities</em>" and "<em>Recommended Procedures for Design of Highway Drainage Facilities</em>." To assist in development of the bridge-scour sections of these manuals, AASHTO needs a critical evaluation of bridge-scour research completed since 1990 with recommendations for the adoption of specific research results. These recommendations will be used by AASHTO in developing policies and procedures in the bridge-scour area for the two new highway hydraulic engineering guidance documents. NCHRP Project 24-27 was funded to critically evaluate bridge-scour research results completed since 1990 and make recommendations for adoption of specific research results by AASHTO and use by the engineering community in general. Project 24-27 has been divided into three functional areas: (1) Project 24-27(1), Pier Scour Processes and Prediction; (2) Project 24-27(2), Abutment and Contraction Scour Processes and Prediction; and (3) Project 24-27(3), Geomorphic Processes and Prediction. Each of these functional areas will be completed concurrently by separate research teams as separate projects under NCHRP Project 24-27. This project are to (1) critically evaluate research completed since 1990 in pier scour processes and prediction in comparison with current practice and (2) develop recommendations for adoption of specific research results by AASHTO and use by the engineering community in general.<o:p> </o:p>This project includes scour in cohesive soils, cohesionless soils, and rock. In conducting this project, the contractor will closely coordinate with the contractors for Projects 24-27(2) and 24-27(3) and the contractor selected by NCHRP to prepare a summary report.<o:p> <br /></o:p></span></font></p>


  • English


  • Status: Active
  • Contract Numbers:

    Project 24-27(01)

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590

    American Association of State Highway & Transportation Officials

    444 North Capitol Street, NW, Suite 225
    Washington, DC    20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  USA  20001
  • Project Managers:

    Harrigan, Edward

  • Performing Organizations:

    University of Iowa, Iowa City

    227 South Quadrangle
    Iowa City, IA  USA  52242-1192
  • Principal Investigators:

    Ettema, Robert

  • Start Date: 20071017
  • Actual Completion Date: 20100930
  • Source Data: RiP Project 16890

Subject/Index Terms

Filing Info

  • Accession Number: 01464589
  • Record Type: Research project
  • Source Agency: National Cooperative Highway Research Program
  • Contract Numbers: Project 24-27(01)
  • Files: TRB, RiP, USDOT
  • Created Date: Jan 3 2013 2:45PM