Estimating the condition index of an existing bridge using a reliability-based deterioration model

F. Ghodoosi, A. Bagchi, Tarek Zayed, A. R. Zaki

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


In the existing bridge management systems, assessment of the structural behavior is based on the results of visual inspections in which corresponding condition states are assigned to individual elements. Therefore, limited attention is given to the correlation between bridge elements from structural perspective. A system reliability-based assessment model is potentially an appropriate replacement for the existing procedures. The aim of this research is to evaluate the system reliability of existing conventional Steel-Reinforced bridge decks over time. The developed method utilizes the reliability theory and evaluates the structural safety for such bridges based on their failure mechanisms. This method has been applied to a simply supported concrete bridge superstructures designed according to the Canadian Highway Bridge Design Code (CHBDC-S6) and the deterioration pattern is achieved based on the reliability estimates.Finally, the bridge condition index of an old bridge in Montréal has been estimated using developed deterioration pattern. The results obtained from the developed reliability-based deterioration model and from the evaluation done by bridge engineers have been found to be in accordance.
Original languageEnglish
Title of host publicationProceedings, Annual Conference - Canadian Society for Civil Engineering
PublisherCanadian Society for Civil Engineering
Number of pages11
Publication statusPublished - 1 Jan 2013
Externally publishedYes
EventAnnual Conference of the Canadian Society for Civil Engineering 2013: Know-How - Savoir-Faire, CSCE 2013 - Montreal, Canada
Duration: 29 May 20131 Jun 2013


ConferenceAnnual Conference of the Canadian Society for Civil Engineering 2013: Know-How - Savoir-Faire, CSCE 2013

ASJC Scopus subject areas

  • Engineering(all)

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