The Terzo Valico dei Giovi - Genoa Junction One project will be the longest railway tunnel route in Italy. The new high-capacity Milan-Genoa line is largely an underground route: starting from Genoa, the first section, the so-called Valico Tunnel, extends 27 kilometers in a tunnel. If all the secondary interconnections of the lines are also considered, the project involves the construction of 90 kilometers of tunnels.

The excavations, therefore, represent a central part of the works. Compared to the total 90 kilometers of tunnels built, 28 of these are excavated with TBMs and the remaining 62 with traditional methods.

In the second episode of HowWebuild - the Webuild tech video series dedicated to the Terzo Valico project - we can discover together the mechanized excavation techniques of a large infrastructure, which will allow trains to travel at a maximum speed of 250 km / h, crossing the provinces of Genoa and Alessandria and involving 12 municipalities until reaching Milan.