Sensitivity analysis of bridge health index to element failure and element conditions.

Details

• Creators:
  Adams, Teresa M. ; Kang, Myungook (MK)
• Corporate Creators:
  Midwest Regional University Transportation Center
• Corporate Contributors:
  Wisconsin. Dept. of Transportation. Social Media Peer Exchange Planning Team
• Subject/TRT Terms:
  Bridges Bridges--Wisconsin--Maintenance And Repair Maintenance Repairing
• Publication/ Report Number:
  MRUTC 08-07
• Resource Type:
  Tech Report
• Geographical Coverage:
  Wisconsin
• Abstract:
  Bridge Health Index (BHI) is a bridge performance measure based on the condition of the bridge elements. It
  
  is computed as the ratio of remaining value of the bridge structure to the initial value of the structure. Since it
  
  is expressed as a percentage value, the BHI could provide an intuitive measure for bridge engineers, and
  
  legislators. The BHI could be converted to another measure such as color (red, yellow and green) that public
  
  understands better. The Pontis user group was surveyed to determine the current use of the BHI and other
  
  measures for bridge management decision making.
  
  This study focused on understanding the sensitivity of the BHI to small and large changes in the element
  
  failure costs and the element condition, the two input data sets for computing the BHI. For these sensitivity
  
  analyses, 221 bridges were selected from Wisconsin’s inventory. The study looked at bridges with simple
  
  and continuous span prestressed concrete girders. The findings can guide state agencies and practitioners
  
  with a sense of how BHI responds to changing bridge condition as well as element failure costs.
  
  The element failure costs were acquired from a previous study by a consultant to the FHWA and the element
  
  level inspection data were from the Wisconsin Department of Transportation (WisDOT).
  
  The analysis considered the impact of Smart Flags used to identify local problems that are not reflected in the
  
  element condition states. Because they may indicate critical defects in the bridges, they should be reflected
  
  for BHI. To investigate the impact of Smart Flags, computation rules suggested by the Kansas DOT were
  
  applied to the selected bridges in Wisconsin.
  
  
• Format:
  PDF
• Collection(s):
  University Transportation Centers US Transportation Collection
• Main Document Checksum:
  urn:sha256:bfed5f373c376ba26be85a422692c1038a9b48b09ff16f42227722a96a4137c2
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17500/dot_17500_DS1.pdf
• File Type:
  [PDF - 1.24 MB ]