Renovation Rütigrundbrücke, Rüschegg BE

The project
The bridge During the rehabilitation in August/September 2001, the entire substructure (carriageway, cross and longitudinal girders, supports) was renewed within 3 weeks. For this time, an emergency bridge with a payload of 10 t and a span of 12.80 m was specially built. The total length was 22.6 meters.

The construction method
After demolition of the existing structure, the longitudinal and transverse beams as well as the wind bracing were installed using CFRP pressure-impregnated fir wood, the top of which was additionally protected with Sarnafill foil. Thickened and interlocking oak planks with a rough surface were again chosen as the deck structure. Here, too, trailing slabs with cobble paving form the transition from the road to the bridge. In the sandstone work, badly damaged parts were replaced and the less stressed ones were worked back to the smooth base. After cleaning with water and brush, a water-repellent coating was applied.