Spie Batignolles Génie Civil, Ferrovial and Spie Batignolles Valérian win the western underground section of line 18 of the Grand Paris Express

Société du Grand Paris has awarded Spie batignolles Génie Civil, leader of the consortium formed with Spie batignolles Valérian and Ferrovial, the civil engineering contract for the western underground section of line 18 of the Grand Paris Express which will eventually serve 10 stations , from Orly airport to Versailles Chantiers, in just 30 minutes.

This new contract, worth €438 million, corresponds to the digging of a 6,7 km tunnel between the Saint-Quentin Est station and Versailles Chantiers, the civil engineering of three stations and eight service structures. The total contract duration is 104 months.

The work will mobilize nearly 350 people at peak and the consortium undertakes to reserve for the benefit of people, currently far from employment, a volume of working hours of at least 10% of the number of hours planned. . These important measures to welcome future employees will represent around forty people supported over the duration of the project and will mainly benefit the Yvelines region.

The digging of the 6.7 km of the tunnel will be carried out with a tunnel boring machine with variable density to ensure the passage in the sands of Fontainebleau, and at the approach of the SNCF lines of Versailles Chantiers. The consortium has set itself ambitious objectives for the recovery of cuttings and in particular of this sand. The station structures will be made by embankment or diaphragm walls depending on their depth. Of the eight ancillary structures, four wells will be drilled to great depths ranging from 50 to 62 m due to the rugged terrain of the Bièvre valley.

Already involved in numerous Grand Paris Express worksites (line 14, line 15 and line 18), Spie batignolles civil engineering is thus strengthening its position as a key player in major infrastructure projects in the region.

For Benoît Moncade, Managing Director of Spie Batignolles Civil Engineering: “We are delighted with the awarding of this new contract, which to date represents our largest market as agent on the Grand Paris Express and further marks our significant presence at the heart of this major program. This is great recognition of the know-how and technical mastery of our civil engineering and earthworks teams who have been working on the Grand Paris Express sites for 6 years. »

For Ignacio Gastón, CEO of Ferrovial Construction: "We are delighted to participate in this major project that is the Grand Paris Express because it is a recognition of our great international experience in the design and construction of this type of urban infrastructure in cities such as London. , Sydney and Madrid. »