The Lavant Viaduct is part of a larger project (the “Vollausbau Pack”), covering a total length of 9.3km and including 9 bridge structures. The largest section, the P19 Lavant Viaduct, is the second highest bridge in Austria. The original bridge was constructed in 1984, and in 2007 a new, parallel bridge with a total length of 935m and a maximum column height of 160m (8 columns) will the completed alongside it. The Lavant Viaduct is an important connection in terms of the construction of Austria’s southern motorway, the A2. The construction of this bridge has placed high demands on all parties involved, with geographically challenging subgrade conditions (substantial weathering and degradation of the bedrock, cliffs partially in danger of slipping, etc.). The structure will cost a total of 20 million euro.
For this project, mageba supplied TENSA®FLEX sliding finger joints of Types RC-500 and RC-600 with a movement capacity of 500mm and 600mm respectively. This joint type consists of a novel metal-elastomer fusion system, which gives the road crossing “internal” flexibility. The fingers can thus be installed pre-stressed, thereby permanently exerting slight pressure on the sliding surface. This means that vertical bridge movements can also be absorbed.
TENSA®FLEX type RC-500 / RC-600
max. movement 500mm / 600mm
Box girder bridge