Our scrupulous design was made for CAV.TO.MI under the supervision of ITALFERR and Ferrovie dello Stato (RFI) (Italian State Railways). The tunnel has a total length of 570 m and consists of two 24 m-wide side-by-side shafts. The pillars withstanding the deck weigh more than 70 tonnes and have a cross-section of 100×200 cm for a height of approximately 11 m. The beams that make up the deck are inverted T-beams placed side by side with a 100 cm base and 220 cm height. The centre wall dividing the two shafts was constructed with a double slab with a total width of 140 cm, completed with on-site casting.