TELT is the binational public promoter responsible for the realisation and operation of the cross-border section of the freight and passenger Lyon-Turin railway line. Founded in 2015 by the Italian and French states, the company coordinates the design and construction of the 65 km of railway between Susa, in Italy, and Saint-Jean-de-Maurienne, in France. The main element of the project is the Mont Cenis base tunnel: an infrastructure consisting of two tubes of 57.5 km each, 4 access adits, 2 international stations, 1 underground safety site, 4 ventilation shafts and 204 safety bypasses. The base tunnel is intended to replace the historic Fréjus tunnel for logistics and international mobility in the western Alpine region, contributing to the achievement of the climate neutrality goal set by Europe. Indeed, the project is part of the Mediterranean Corridor of the European TEN-T network, which aims to connect the continent via 9 long-distance rail corridors. Currently, 19% of the works have been completed and 10 construction sites are operational with more than 1,400 people at work.