On the 28/04/2022 at Saint-Martin-la-Porte, in Val Maurienne, France excavation of the first 10.5 km of the Turin-Lyon base tunnel has now been completed:- click here for a video. At around 11:00 a.m., workers broke through the last rock wall joining the 9 km section excavated by the Federica TBM with the 1.5 km section built using the traditional method in one of the most sensitive parts of the mountain between France and Italy due to the presence of a long coal fault.

This is the second construction site of the project to be completed on time and on budget, following the construction of the entrance portal at Saint-Julien-Montdenis, which was completed in the autumn of 2021. At the same time, work began on the French section of the tunnel through which the trains will pass. To date, more than 1,000 people are working on the 10 construction sites in the two countries.

For further information from the tunnelbuilder archive please click fr/11 and it/80 and also visit https://www.telt-sas.com/ . 17/22.