• Viaduct Obere Argen

Viaduct Obere Argen

Wangen im Allgäu, Germany, 1989

This 6-lane bridge crosses a rather flat valley with a little river, a quite usual situation. However sliding subsoil conditions made the founding of piers on one side of the valley difficult and costly. Therefore we proposed a 258 side span combining a cable-staying from above and propping from below, winning with that first prize in a competition.
This combination halves the pylon height of a standard cable-stayed bridge, without increasing the cable forces. The low pylon and the overall lightness of this large bridge blend well with its pre-alps surroundings.

  • Location

    Wangen im Allgäu, Germany

  • Architect

    schlaich bergermann partner; Hans Kammerer, Stuttgart

  • Client

    Autobahnamt Baden-Württemberg

  • Contractor

    Walter-Thosti-Boswau AG, Dyckerhoff & Widmann AG sowie Compagnie Francaise d’Entreprises Metalliques

  • Our Scope of Work

    conceptual design, check of construction design

  • Length 730 m
  • Width 29 m
  • Height of bridge above valley max. 40 m
  • Span 258 m
  • Height of pylons 55 m
  • Cables fully locked spiral strands, diameter 126 mm

Project location

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