BRIDGE SCOUR EVALUATION: SCREENING, ANALYSIS, & COUNTERMEASURES
The Federal Highway Administration (FHWA) issued a Technical Advisory in 1988 revising the National Bridge Inspection Standards to require evaluation of all bridges for susceptibility to damage resulting from scour. In accordance with the Memorandum of Understanding between the Forest Service and the FHWA, the Forest Service is required to implement the Technical Advisory, establish a scour evaluation program, and submit reports to FHWA discussing the progress of the evaluation program. Prior to 1998, the Forest had not implemented a scour evaluation program. In 1998, an Engineering Technology Development Proposal was funded to develop a scour evaluation program, specifically for the Forest Service, that all Regions of the Forest Service could implement. The project was to outline a single process and establish criteria, methods, and guidelines that would ensure consistency throughout the agency and eliminate duplication of effort. The project was completed in cooperation with the Regional Bridge Engineers and was organized into three phases: (1) Review the FHWA guidelines and existing public road agency scour programs; (2) Develop a scour evaluation program specifically for the Forest Service based on the information from Phase 1; and (3) Provide support for the program during implementation by the Regions. This document is the culmination of Phases 1 and 2. The developed Scour Evaluation Program is a four-step process: (1) Office Screening and Management Priority Analysis; (2) Field Review, Scour Vulnerability Analysis, and Prioritizing; (3) Detailed Scour Evaluation; and (4) Plan of Action. Each step is discussed in detail in this document.
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Corporate Authors:
US Forest Service
San Dimas Technology and Development Center, 444 East Bonita Avenue
San Dimas, CA United States 91773 -
Authors:
- Kattell, J
- Eriksson, M
- Publication Date: 1998-9
Language
- English
Media Info
- Features: Appendices; Figures; Photos; References;
- Pagination: 47 p.
Subject/Index Terms
- TRT Terms: Bridges; Countermeasures; Evaluation; Inspection; Scour
- Identifier Terms: National Bridge Inspection Standards
- Subject Areas: Bridges and other structures; Design; Highways; Safety and Human Factors; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00962860
- Record Type: Publication
- Report/Paper Numbers: 9877 1207--SDTDC,, WIT-11-0021
- Files: TRIS
- Created Date: Sep 15 2003 12:00AM