Steel Pin and Hanger Assembly Replacement Options

A number of steel beam bridges exist in the United States that contain pin and hanger assemblies. Pin and hanger assemblies are fracture critical members whose failure would result in collapse of the bridge or render it unable to perform its expected functions. As these bridges continue to age, many assemblies have deteriorated to a point where retrofit or replacement has to be considered and performed to maintain intended safety and performance. States have taken various approaches to address the pin and hanger assembly retrofit and replacement options. However, there is no single report that summarizes these approaches. This report documents steel pin and hanger assembly retrofit and replacement options via a literature review and synthesis that explores options that have been studied and implemented in the United States. In conjunction with the literature review, a survey was developed in conjunction with the Bureau of Sociological Research (BOSR) at the University of Nebraska-Lincoln to assist with identifying implemented strategies and evaluate best practices. Information was solicited from 50 states and was used in conjunction with the literature review to develop flowcharts that would assist Nebraska Department of Roads (NDOR) personnel with assessing various options and their consequences when pin and hanger assembly retrofit or replacement options are being considered for bridges in the state.

• Record URL:
  https://digitalcommons.unl.edu/ndor/183
• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/32113
• Supplemental Notes:
  • This research was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
• Corporate Authors:

  Mid-America Transportation Center

  University of Nebraska-Lincoln
  2200 Vine Street, PO Box 830851
  Lincoln, NE  United States  68583-0851

  Nebraska Department of Roads

  1500 Highway 2, P.O. Box 94759
  Lincoln, NE  United States  68509

  Research and Innovative Technology Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Linzell, Daniel G
  • Balakrishna, Chandana C
• Publication Date: 2017-1

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 193p

Subject/Index Terms

• TRT Terms: Best practices; Literature reviews; Retrofitting; States; Steel bridges; Surveys
• Uncontrolled Terms: Pin-and-hanger members; Replacement
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01634600
• Record Type: Publication
• Report/Paper Numbers: Report M042, Report No. 26-1121-4031-001
• Files: UTC, NTL, TRIS, RITA, ATRI, USDOT, STATEDOT
• Created Date: May 9 2017 3:49PM