This paper briefly discusses background material and statistical data regarding the nation's current bridge problems and the research presently underway that will aid in resolving this problem. Bridge deficiencies as uncovered in the inspection of over 140 bridges located in five states are outlined. These deficiencies are categorized as Structural, Mechanical, Geometric, and Safety and are discussed as they apply to various bridge types and bridge materials. A catalog of deficiencies is included which lists the deficiencies in the order of frequency of occurrence. Bridge rehabilitation techniques presently in use are outlined and some unique techniques discussed. These include techniques to increase live load capacity, correct mechanical deficiencies, and to improve geometrics. Improvements to rideability, to safety, drainage and other miscellaneous repairs are also discussed. Sketches are included depicting the concepts of some of these rehabilitation techniques. "Improvement Factor" curves are developed for various techniques that can be utilized to increase live load capacity. This factor is an indication of the percentage of increase in flexural strength that can be achieved by a particular technique. Cost information for each of these techniques is also provided so that a "Cost Effectiveness Factor" can be computed for each. This provides a convenient means of comparison of various techniques from both a cost and an improvement standpoint. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 47-55
  • Monograph Title: Bridge Engineering. Volume 1
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00183746
  • Record Type: Publication
  • ISBN: 0309026962
  • Files: TRIS, TRB
  • Created Date: Dec 3 1978 12:00AM