The article gives details of the 450 M concrete arch bridge to be erected across the bloukrans gorge near Plettenberg Bay in Africa. The continuous prestressed concrete deck is to be built 200 M above the riverbed and will be supported by an arch with a clear span of 272 M and 23 pairs of reinforced concrete columns. The columns will be spaced at 19 M centres and will vary from 3-65 M high. An advantage of the arch design chosen is that the thrust on the rock embankment is applied approximately perpendicular to the sloping face of the rock which consists of jointed and fractured quartzitic sandstone. Details are given of bridge design and construction methods being considered. When completed, the bridge will be Africa's largest arch bridge and the fourth largest in the world. (TRRL)

  • Corporate Authors:

    Pithead Press Proprietary Limited

    4th Floor, Wynrop House, 91 Mooi Street
    Johannesburg,   South Africa 
  • Publication Date: 1980-1

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00316874
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: May 21 1981 12:00AM