M4 Metro Line breakthrough

26/02/2019

On the 25.02.2019 the second of the two TBMs that are excavating the tunnels of the Western Section of the M4 in Milan reached Frattini Station. In only 22 days the TBM excavated approximately 570 metres between Gelsomini and Frattini. Click here for a video and it/16 for the tunnelbuilder archive. For further information please also visit www.metro4milano.it . 09/19.