DRYGRANGE BRIDGE, ROXBURGHSHIRE

CONSTRUCTION DETAILS OF THE NEW DRYGRANGE BRIDGE, ACROSS THE RIVER TWEED, ARE GIVEN. THE OLD MASONRY ARCH BRIDGE HAS BEEN RETAINED FOR PEDESTRIAN TRAFFIC. THE 640 FT LONG NEW BRIDGE IS CONSTRUCTED ON A HORIZONTAL CURVE OF 3360 FT RADIUS AND IS 80 FT ABOVE THE RIVER. A DIAGRAM OF THE BRIDGES LAYOUT IS GIVEN. THE BRIDGE'S SUPERSTRUCTURE CONSISTS OF TWIN STEEL BOX GIRDERS WITH A REINFORCED CONCRETE DECK. REINFORCED CONCRETE PIERS FORM THE SUBSTRUCTURE, EACH PIER HAVING 2 COLUMNS, ONE UNDER EACH GIRDER. THE REALIGNMENT OF ONE MILE OF THE APPROACH ROADS TO THE BRIDGE IS DESCRIBED. A CRAWLER LANE IS PROVIDED ON THE NORTHERN APPROACH ROAD WHERE THE GRADIENT IS 1 IN 22. OTHER IMPROVEMENTS INCLUDED IN THE CONTRACT ARE MENTIONED.

  • Corporate Authors:

    IPC Building and Contract Journals Limited

    32 Southwark Bridge Road
    London SE1 9EX,   England 
  • Publication Date: 1974-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00081099
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 8 1975 12:00AM