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Getwingbridge in Switzerland completed

  • © sbp
  • © sbp
  • © sbp
  • © sbp
  • © sbp
Getwingbridge in Switzerland completed
sbp 13.11.2017

Last week, the construction of the highest bridge belonging to the Swiss Gornergratbahn was finished. For more than 100 years the narrow-gauge railway at 1605 meters altitude links Zermatt with Gornergrat at 3089 meter height. Since 1899 the Getwingbridge, which was in need for renovation because of corrosion damages and insufficient traffic clearance, is located within immediate proximity to the valley station. Earlier this spring the renovation started during ongoing rail operation with the restructuring of the existing nature stone wall support. More recent the bridge girder, which was manufactured in the Western Switzerland, was lifted into place by truck-mounted cranes during a three night and two day closing of the railroad traffic. Simultaneously extensive works had to be done within the abutments, track system, pipes and service gangways before the rail service could be resumed. The new construction consists of two flat, pyramid-shaped steel hollow sections which are joined with a tie member. The tie member divides itself at the pyramid high points and hereby directs the tension directly towards the support points. The covering sheet was built as orthotropic panel including longitudinal vertical stiffeners and cross beams. Additionally, the underspann increased the traffic clearance. In 2014 the competition received entries by 29 teams from different European areas and the concept titled „Flügel“ by schlaich bergermann partner together with SRP Engineers and Mooser Lauber Stucky Architects from Zermatt was chosen as final design. The entry was said to be convincing because of its delicate and transparent construction and its simultaneous durability.

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