Risk-based bridge inspection practices.

Details

• Creators:
  Reising, Rebecca S. ; Connor, Robert J. ; Lloyd, Jason B. 
• Corporate Creators:
  Purdue University. Joint Transportation Research Program
• Corporate Contributors:
  United States. Federal Highway Administration ; Indiana. Dept. of Transportation
• Subject/TRT Terms:
  Bridges Case Studies Inspection Needs Assessment Risk Analysis Scheduling Structural Analysis
• Publication/ Report Number:
  FHWA/IN/JTRP-2014/11
• Resource Type:
  Tech Report
• Geographical Coverage:
  Indiana
• Corporate Publisher:
  Purdue University. Joint Transportation Research Program
• Abstract:
  Improving bridge safety, reliability, and the allocation of bridge inspection resources are the goals of the proposed risk‐based bridge 
  
  inspection practices. Currently, most bridges in the United States are inspected at a fixed calendar interval of 24 months, without regard 
  
  to the  condition  of the  bridge.  Newer  bridges  with  little  or  no  damage  are  inspected  with the same  frequency  as  older,  more 
  
  deteriorated bridges thus creating inefficiency in the allocation of inspection resources. 
  
   
  
  The proposed methodology incorporates reliability theory and expert elicitation from the Indiana Department of Transportation’s Risk 
  
  Assessment Panel, developed during this research, to rationally determine bridge inspection needs. Assessments are made based on the 
  
  likelihood and consequence of failure for specific bridge components. The likelihood of failure is determined through attributes based on 
  
  design, loading, and condition characteristics while the consequence of failure is based on expected structural capacity, public safety, 
  
  and serviceability. By combining the expressions of likelihood and consequence for each component, an optimum inspection interval for 
  
  the entire bridge can be determined through the use of risk matrices. 
  
   
  
  The methodology was evaluated through case studies involving Indiana bridges. Over 30 years of historical inspection reports were 
  
  utilized in the back‐casting process to evaluate deterioration levels and assess the adequacy of the risk criteria. Results of the case 
  
  studies conducted during the research indicated that the risk analysis procedures provided suitable inspection intervals ranging from 24 
  
  to 72 months for Indiana bridges. 
  
  
• Format:
  PDF
• Funding:
  SPR-3653
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:10c9df16a85016ca5c016de4e6e960f350c00294bc456b6338a57cb6a2566f4c
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28396/dot_28396_DS1.pdf
• File Type:
  [PDF - 37.46 MB ]