6 km railway tunnel from Stuttgart central railway station to Bad Cannstatt as part of the large-scale project „Stuttgart 21“.
The Roppen tunnel between Innsbruck and Landeck in Austria was made safer by the construction of the second tube. The 5,069 meter long tunnel was driven conventionally.
The U6 underground line connects the district of Möhringen with the industrial area “Am Schelmenwasen”. The double-track underground railway tunnel crosses below the industrial area „Fasanenhof”.