Rhine Bridge Hard-Fussach
Hard, Austria
Near Bregenz, shortly before the Rhine flows into Lake Constance, a bridge connects the two Vorarlberg communities of Hard and Fussach. In order to adapt the river-spanning structure to today's traffic requirements and also to provide improved flood safety, it was decided to demolish the existing bridge and build a new, modern replacement bridge.
For this purpose, the design envisaged a specially pre-stressed composite bridge of the "extradosed bridge" type - a relatively new bridge type in which the guidance of tendons runs outside the cross-section of the deck girder (French "extrados" = outside (arch) spine). In addition, there were other special architectural features, such as a special geometry of the piers, which were to "unfold" from a rhombus to a rectangle from bottom to top.
Construction Method
Special pre-stressed composite bridge of the extradosed type
Challenge
Complex bridge geometry with exceptionally wide, asymmetrical cross-section and strict static specifications resulting from the special construction method
Solution
Customized composite formwork carriage with two longitudinal trusses and two additional rows of pendulum props in the cross-section as well as formwork wagon TU with special frame for the bridge edge-beams
Daniel Kopp | Foreman | HABAU Hoch- und Tiefbau GmbH
"For our infrastructure projects, we always need individual formwork solutions that are tailored to our needs. We can always rely on Doka's engineering know-how."
Project data
Year of completion
2022
Construction time
ca. 2 years
Country
Austria
Postcode
6971
City
Hard
Contractor
HABAU Hoch- & Tiefbau GmbH, MCE GmbH and WILHELM+MAYER Bau GmbH
Building data
Construction method
Special pre-stressed composite bridge of the extradosed type
Length of the bridge
255,6 m
Span width
24,4 m