Strengthening of heritage timber truss bridges: bridge over Abercrombie River, Abercrombie, NSW

The Bridge over Abercrombie River on MR54 was built on the masonry foundations of a previous bridge swept away by floods. MR54 links Bathurst with Goulburn and is being progressively upgraded to carry B-Double vehicles. Strengthening was, therefore, required for this locally significant heritage bridge to allow greater live loading. The three Allan truss spans were strengthened by the installation of continuous steel plates inside the bottom chord timber flitches, new steel cross girders and transversely stressed Stress Laminated Timber (SLT) decks. The approach spans were strengthened by lowering the main timber girders; introducing steel cross beams and providing transversely stressed SLT decks. The renovating methods used on this bridge have demonstrated acceptable ways of upgrading and strengthening timber truss bridges that are classified as heritage significant. This paper provides an overview of the strengthening design and construction with emphasis on design and heritage issues that were encountered. (a) For the covering entry of this conference, please see ITRD abstract no. E211602.

Language

  • English

Media Info

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Filing Info

  • Accession Number: 01011310
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 0855886986
  • Files: ITRD, ATRI
  • Created Date: Dec 19 2005 3:01PM