The Trent River Bridge in Humberside is described as the UK's first glued, segmental road bridge to be built using an advanced cantilever system. The 267 M long bridge is of symmetrical design, with two 85 M central spans and two 48-5 M approach spans. Each independent carriageway sites on two precast concrete box girders. Modifications to a continental construction technique are described, resulting in an advanced design for the box units' launching girder. The main feature is that the girder itself is capable of maintaining equilibrium of the developing structure during the balanced cantilever construction operation. The launcher, which weighs, and costs, as little as half of a comparable continental one, comprises twin latice trusses and four pairs of supporting feet. These pairs, with one member on each truss, are spaced alternately along the length of the girder. Although all the feet are retractable, two pairs can also glide along the bottom of the trusses. A portal crane for lifting the precast segments runs on rails along the launchers top chords. The application of this British modified construction technique to the erection of the Trent River Bridge is described.

Media Info

  • Features: Photos;
  • Pagination: p. 36-37
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00183445
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jun 30 1979 12:00AM