The new footbridge in Arquennes – One of the lightest deck per m²

In Arquennes, the disappearance after the second world war of the old railway bridge crossing river Samme, marked a break on the RAVeL, forcing pedestrians and cyclists to mix with automobile traffic to cross the village. The municipality of Seneffe entrusts bureau greisch with the mission of designing a new footbridge.In order to respect the original structure and to integrate it as respectfully as possible into this remarkable site, the sketch developed translates a contemporary structure in metal latticework, whose grids (350 mm²) recall the characteristics of the old railway bridge. The materials considered (corten steel structure and exotic wood decking) offer a good color match with the existing masonry and an excellent durability.The cross section of the metallic latticework is around 30 mm² which gives the structure an extraordinary transparency and a weight of approximativily 75 kg of steel per square meter of decking, which is really low !