Hölltobel Bridge St. Gerold

The Hölltobel Bridge has constituted an important traffic link to the Great Walser Valley since the 1960s. However, heavy traffic loads and the extreme weather conditions of the past decades have left their mark. The bridge was in such poor condition that rapid action was necessary, but the extent of the damage meant that rehabilitation was impossible. In January 2017, the provincial government of Vorarlberg therefore issued a call for tenders to build a new bridge.

This was the starting signal for one of the most spectacular construction projects in the history of Nägele Hoch- und Tiefbau Vorarlberg and the Tyrol branch of PORR Tiefbau. A new, dual-span reinforced concrete bridge was to traverse the "Hölltobel" (Hell's Ravine) alongside the existing bridge at a height of around 18 metres. Due to the extremely steep terrain and the lack of space on-site, extensive slope stabilisation measures and additional preparatory works had to be carried out. In September 2017, the centrepiece of the project was finally completed – concreting the supporting structure.