Rosel footbridge

Upon request of the Canton, the Rosel footbridge had to meet high criteria of durability. UHPC ultra-high performance fibre-reinforced concrete was chosen. Although this material is initially more expensive than traditional concrete, in the long term it proves to be very competitive from an economic point of view.

Moreover, it offers a potential for formal expression, inherent to its static and technical properties. This high-performance material results in thin sections, much more slender than traditional concrete, in our case only thirteen centimetres for a span of fifty metres. Concrete embedding at the level of the prestressing cables produces bulges of about twenty centimetres at the upper level of the parapets. This generates rounded or even vegetal or bone like shapes, which infuse the structure with an organic component. These slender profiles accompany a dynamic movement which is expressed in an arched longitudinal section and in a convex cross section, which evolves at the extremities by a widening gesture. For this purpose, three additional asymmetrical modules are moulded, generating an inverted symmetry of the bridge, which pick up the directions of the existing foorpaths.

Pedestrian bridge
2020 -
Etat du Valais
Direct mandate
Civil engineer
Sollertia SA