The concrete bridge, built between 1990 and 1992, replaces an older construction from the early days of reinforced concrete construction. The bridge spans the Hundwiler gorge at 80 metres height and is an important connection in the canton of Appenzell Ausserrhoden and between Appenzell and Herisau.
Unfortunately, the bridge had gained notoriety as a ‘hotspot’. Therefore, the canton decided to install a safety net when it became necessary to renovate the bridge in 2017. Together with experts of mental health organisations, a prevention concept was developed with Webnet as its central element. The fall protection has proved its worth and is an excellent companion to the elegant concrete arch construction.
Webnet Ø 2.0 mm, mesh 100 mm, 720 square metres
Lateral cable Ø 3.0 mm, 6x19 + WC