Technical details

2002: initial feasibility studies
2004: socioeconomic and public utility studies
2008: traffic studies
2009 – 2017: operation studies and technical studies of the equipment
2018:  award of the project management of Lot 2 to the S2IP group
2018: project management of the Saint-Jean-de-Maurienne jonction
2019: works supervision of the ‘La Maddalena’ base site
2020: award of the project management of Lots 3/4

Project management
France and Italy
SYSTRA-SOTECNI; Setec, Italferr, Pini Swiss Engineers
Project management, site supervision
Tunnels and Underground Structures

SYSTRA is one of the main engineering companies working on the Lyon-Turin base
tunnel project, set to become the longest rail tunnel in the world. The Group is currently mobilised on the construction of more than half the tunnel, on both sides of the Alps.

In order to reduce pollution due to road traffic and increase rail links between France and italy, the two countries committed to building a new base tunnel, located at the foot of the Alps, to link Saint-Jean-de-Maurienne to Suse. 57.5km long, this new structure will be the longest of its kind in the world. It will enable the opening of a new rapid link between Lyon and Turin, and cut journey times from 3h43 to 1h47.

By 2030, more than 4.5 million passengers per year could be using this line. But before that, the impossible must be achieved: build a twin-tube tunnel under a mountain with a particular geological complexity, at depths almost always more than 2,000 metres.

SYSTRA carried out the initial studies for this structure from 2002, before doing the traffic and socioeconomic studies for the project. Today, the Group is working on the project management of almost 60% of the tunnel’s length:

  • Within the S2IP consortium led by Setec for the civil engineering of Lot 2;
  • Within the IS2P consortium led by Italferr with our Italian subsidiary SYSTRA-SOTECNI for the civil engineering of Lots 3/4, covering the Italian entry to the tunnel.

In addition to these contracts, SYSTRA is responsible for other strategic assignments:

  • Track modernisation of the future international station of Saint-Jean-de-Maurienne, the French entry point of the new tunnel;
  • Supervision of land acquisitions for the part of the site situated in France;
  • Supervision of maintenance and enlargement works of the ‘La Maddalena’ base site situated in Italy.