Defect-Based Urgency Index for Bridge Maintenance Ranking and Prioritization
Bridge condition assessment and rating provide essential information needed for bridge management. This paper reviews bridge inspection and condition rating practices and introduces a defect-based urgency index. The index is estimated at the element-level based on the extent and severity of the different defects typical to the bridge element. The urgency index approach has the following advantages: (1) It facilitates judgment submission, i.e. instead of rating the bridge element with a specific linguistic overall expression (which can be subjective and used differently by different people), the approach is based on assessing the defects; (2) It captures multiple defects that can be present within a deteriorated element; and (3) It reflects how critical the element is through quantifying critical defects and their severity. The approach can be further developed and validated. It is expected to be useful for practical purposes as an early-warning system for critical bridge elements.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1124221Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1501
 ASCE. “Report Card for America's Infrastructure.” American Society of Civil Engineers, 2013 http://www.infrastructurereportcard.org.
 R. Hudson, R. Haas, and W. Uddin, Infrastructure management, McGraw-Hill, New York, N.Y., 1998
 S. Hudson., R. Carmichael, L. Moser, W. Hudson, and W. Wilkes, “Bridge Management Systems.” NCHRP Rep. No. 300, Transportation Research Board, National Research Council, Washington, D.C., 1987
 J. E. Roberts, and D. Shepard, D., “Bridge Management for the 21st Century,” Trans. Research Record, No. 1696, Journal of the Transportation Research Board, pp. 197-203, 2000
 K. Golabi, and R. Shepard, “Pontis: A system for maintenance optimization and improvement of U.S. bridge networks.” Interfaces, Vol. 27, No. 1, pp. 71–88. 1997
 FHWA “National Bridge Inspection Standards,” http://www.fhwa.dot.gov/bridge/nbis.cfm
 FHWA “Bridge Inspectors Training Manual 90,” U.S. Department of Transportation, Bureau of Public Roads, Washington, D.C., USA, 1991
 P. D. Thompson, and R. W. Shepard, “AASHTO commonly recognized bridge elements, successful applications and lessons learned.” National Workshop on Commonly Recognized Measures for Maintenance, 2000
 A. Estes, and D. Frangopol, “Updating Bridge Reliability Based on Bridge Management Systems Visual Inspection Results,” Jour. of Bridge Eng., Vol. 8, No. 6, pp. 374-382, 2003
 Colorado Department of Transportation, “BMS/Pontis Bridge Inspection Manual,” Colorado Dept. of Transp., Denver, USA, 1995
 OSIM, “Ontario Structure Inspection Manual,” Ontario Ministry of Transportation, Structural Office, Bridge Management Section, Ontario: Canada, 2000
 S. Abu Dabous, S. Alkass S., and A. Zaki, A., “A Probabilistic Methodology for Bridge Deck Condition Assessment,” Jour. of Bridge Struct., Vol. 4, No. 1, pp. 49-56, 2008
 S. Moufti, T. Zayed, and S. Abu Dabous, “Defect-Based Condition Assessment of Concrete Bridges: Fuzzy Hierarchical Evidential Reasoning Approach,” Trans. Research Record: Journal of the Transportation Research Board, 2431, 88-96, 2014