We controlled the driving of the used drilling machine. In addition we monitored surrounding buildings via 800 measuring points. After a drive of more than 7 months, at a length of 2.7 km (1.7 mi) with a diameter of 8.3 m (27 ft) the TBM arrived in the target shaft in Vienna exactly as planned.
Tunnel lenght: 2,7 km / 1.7 mi
Construction sum: EUR 75 M
Construction period: 2003/05 – 2006/04