Load rating is the process of computing the capacity of a bridge to carry heavy vehicle loads. This paper sets out a rational system for determining the capacity of a bridge using two standard traffic loads - one to represent uncontrolled "normal" traffic, the other to represent exceptional heavy loads (permit vehicles). The load ratings are the proportions of these standard loads that a bridge can accommodate with safety. The load ratings are only calculated once for the standard loads. They are then used for determining if a deficient bridge should be posted with a load restriction, or if a permit vehicle can cross a bridge with safety. This unified approach facilitates the selection of the optimum route for the movement of a heavy vehicle, and allows the load capacity of links in the network to be upgraded in a logical manner to meet strategic objectives. (a) For the covering abstract of this conference, please see IRRD abstract no 861149.


  • English

Media Info

  • Features: References;
  • Pagination: p. 4.1-9
  • Serial:
    • Volume: 1
    • Issue Number: AP 28/94

Subject/Index Terms

Filing Info

  • Accession Number: 00664868
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 0-85588-443-6
  • Files: ITRD, ATRI
  • Created Date: Sep 9 1994 12:00AM