Italian Bridge over the River Plessur

The new bicycle and pedestrian bridge over the river Plessur relieves traffic congestion in the Welschdoerfli street and provides better access to the old town of Chur for non-motorized traffic. The superstructure of the bridge consists of the S-shaped curved bridge girder and the arch that spans diagonally above the bridge deck. The roadway girder with a total length of 77 m is supported by 10 inclined suspender ropes, which are attached to the arch and the laterally protruding corbels. The overhang of the corbels is variable, so that a sufficient clearance height is ensured at every suspender rope. In the middle of the span, the arch protrudes9.5 m above the roadway, where the arch has a span of 62 m and an arch rise of 14 m. The result is an extremely slender and filigree bridge structure that fulfils both urban planning and design aspects in a convincing way. The paper will focus on the structural design as well as on the assembly of the bridge, whereby some specialties are described in more detail.