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Abstract: For the upgrading of the Lower Inn Valley Railway Line in Tyrol, Austria, a new double-track High Speed Railway (HSR) was built close to the existing line. Approx. 80% of this new line runs in mined tunnels, cut & cover tunnels and in trough structures. The crossing of the A12 motorway, the existing railway line and the Inn River was required several times. This 40 km stretch was divided in 10...