Design of the approach spans to Second Gateway Bridge, Brisbane

The Second Gateway Bridge crosses the Brisbane River to the east of the city of Brisbane and is of overall length of 1627m with a main span of 260m and approach spans with span lengths of 71m. The superstructure for the approach spans comprises a pair of prestressed spine girders of matchcast segmental construction and erected by the balanced cantilever method with segments typically 2.8m long and varying between 3.3 and 5.2m deep. This paper describes the design development process for the approach spans including the determination of the design criteria, selection of the superstructure cross section and structural form for the substructure. Details are provided of the investigations and testing carried out to confirm the design assumptions and how the design was prepared to facilitate the subsequent construction phase. (a) For the covering entry of this conference, please see ITRD abstract no. E218160.

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  • English

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Filing Info

  • Accession Number: 01143952
  • Record Type: Publication
  • Source Agency: TRL
  • Files: ITRD, ATRI
  • Created Date: Nov 16 2009 12:16PM