The author considers the options of repair or replacement of concrete bridges, in particular some of the assumptions used in discount calculations. The effect of planning the replacement of a bridge every 60, 40, 30 and 20 years are discussed. The 10% saving achieved with a 30 year design life is seen to be in conflict with the conventional approach. It is also suggested that an obsolescence or redundancy histogram models the future of bridges too closely on the past when future conditions could be quite different. The switch to different techniques, such as the jointless integral bridge, may also make a vast difference to maintenance requirements. For the covering abstract see IRRD 873927.


  • English

Media Info

  • Pagination: p. 95-98

Subject/Index Terms

Filing Info

  • Accession Number: 00715860
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jan 31 1996 12:00AM