Grand Paris is a vast, strategic project, requiring a transport infrastructure of transport to fit its dimension. The extension of Eole, line E of the RER rail network in Paris, is one of projects that aim to improve service for commuters of the Ile-de-France region in the future. Eiffage is one of the main players involved in the project, with the construction, in 2017, of the new Porte Maillot station and a 6.1-km tunnel excavated under the Seine river.
Another component of this rail infrastructure programme, the renovation of 47 kilometres of track between Nanterre-la-Folie (Hauts-de-Seine) and Mantes-la-Jolie (Yvelines). Conducted by Eiffage Rail, works began in early 2017 and will be completed five years later. They include the removal of the existing tracks, earthwork and sanitation work, and the laying of new track.
The Eole railway extension to the west of Paris, which Eiffage Génie Civil and Eiffage Fondations are building via a consortium, is one of those projects that are exceptional in terms of both their scale and what is at stake.