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Title: RELIABILITY AND ACCURACY OF ROUTINE INSPECTION OF HIGHWAY BRIDGES
Accession Number: 00815881
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: Routine inspection is the most common type of highway bridge inspection completed to satisfy the requirements of the National Bridge Inspection Standards. Routine inspections of highway bridges are typically completed using only visual inspection (VI) and rely heavily on subjective assessments made by bridge inspectors. Given this practice and the fact that VI may have limitations that affect its reliability, the Federal Highway Administration completed a comprehensive study to examine the reliability of VI as it is currently practiced in the United States. The accuracy and reliability of condition ratings generated through routine inspections of six in-service and decommissioned highway bridges were studied. These timed inspections were completed in normal summer weather conditions under direct observation. To ensure that results from this study would be applicable to normal bridge inspections, state department of transportation bridge inspectors made up the study sample, which included 49 inspectors from 25 states, representing a diverse cross section of the bridge inspector population. Results of the study indicate that routine inspections are completed with significant variability. Specifically, 95% of primary bridge element condition ratings will vary within two rating points of the average, and only 68% of these ratings will vary within one rating point. Additionally, the National Bridge Inspection Standards definitions of "condition rating" may not be sufficiently refined to allow for reliable routine inspection results.
Supplemental Notes: This paper appears in Transportation Research Record No. 1749, Maintenance of Transportation Pavements and Structures.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Phares, B MGraybeal, B ARolander, D DMoore, M EWasher, G APagination: p. 82-92
Publication Date: 2001
Serial: ISBN: 0309072093
Features: Figures
(9)
; References
(7)
; Tables
(5)
TRT Terms: Identifier Terms: Geographic Terms: Subject Areas: Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods
Files: TRIS, TRB, ATRI
Created Date: Aug 24 2001 12:00AM
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