A description is given of the new bridge across the River Dee which carries part of the A483 between Chester and Oswestry. The 5 span viaduct has a total length of 350 M and the deck will be in the form of a variable depth single cell prestressed concrete box girder supported on hollow concrete columns. The contract presented the problem of working on the sides of a valley with 1 in 3 slopes but this has been largely overcome by the use of cranes to pass material. Details are given of techniques used to overcome the difficult ground conditions encountered which include old open-case mine workings. Work is being carried out on the South side of the river first where one pier is complete and the second under construction. The latter is over 30 M high and has a ground anchor wall in its foundation to prevent slip circle failure. This will be held by 52 ground anchors up to 25 m long and be matched by a similar pier on the opposite bank. Details are given of the installation of anchors and construction of piers and plans to construct the deck by the balanced cantilever method outlined. The associated construction of 2 roundabouts, underpasses and overbridges is noted. (TRRL)

  • Availability:
  • Corporate Authors:

    Thomas Telford Limited

    London,   United Kingdom 
  • Authors:
    • RUSSELL, L
  • Publication Date: 1988-6-9

Media Info

  • Pagination: p. 22-4,26
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00493187
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS, ATRI
  • Created Date: May 31 1990 12:00AM