The paper presents a comparision of the AASHTO design live loadings for bridges with various other loading situations. Comparisons are made with some European design live loads, with native and foreign legal loads, normal permit overloads, and abnormal permit loads. The results of a bridge load rating exercise are presented. Some actual bridge load histograms are given, as well as a comprehensive histogram based on the national loadometer surveys for 1970. Fatigue loadings and damage are discussed in the light of actual and design loadings. It is concluded that it may be timely to increase the AASHTO HS design loadings. To improve the bridge load rating process, it is suggested that some standard load rating vehicle and test method be employed. Further refinements of the fatigue design provisions for steel bridges do not seem warranted in light of the great variation of actual loadings on bridges.(a) (TRRL)

  • Availability:
  • Corporate Authors:

    IPC Science and Technology Press Limited

    IPC House, 32 High Street
    Guildford, Surrey  England 
  • Authors:
    • Galambos, C F
  • Publication Date: 1979-10

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00308901
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Apr 22 1980 12:00AM