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Ingérop, as part of the Intencités15 consortium, wins the first design-build contract for the Grand Paris Express for a section of line 15 west

Société du Grand Paris has appointed the Intencités15 consortium as the first design-build contractor for line 15 (western section) of the Grand Paris Express, the largest carbon-free urban mobility project in Europe. This section will link Pont de Sèvres station to La Défense.

©Archi5 - Société du Grand Paris

The Intencités15 consortium, led by VINCI Construction Grands Projets, awarded the project engineering contract to an integrated project management sub-group comprising Ingerop, Artelia and five architectural firms.

An exceptional project

The contract covers the construction of 14 km of tunnels, five stations (Saint-Cloud, Rueil – Suresnes – Mont-Valérien, Nanterre La Boule, Nanterre La Folie and La Défense), a back station at Nanterre La Folie and 16 service structures.

As an extension of the southern section of line 15, this first western section of line 15 will interconnect with Transilien lines L and U at Saint-Cloud, with RER line E at Nanterre La Folie, and with RER lines A and E, metro line 1, tramway line T2 and Transilien lines L and U at La Défense. This section, built in a very dense urban area, is scheduled to come into service at the end of 2031.
The technical scope of the contract includes preparatory works, civil engineering, all trades fitting out of stations and service structures, as well as systems, railway equipment, equipment for stations, service structures and tunnels: track, high voltage (high voltage, low voltage, traction, catenary), low voltage, electromechanical equipment for stations (ventilation/smoke extraction/air conditioning, lifts and escalators, etc.), tunnels and service structures (ventilation/smoke extraction/decompression).

Ingerop, unique expertise

Faced with the diversity and complexity of the assignments to be carried out, Ingerop has been able to bring its multi-sector expertise to bear in the construction sectors: Infrastructure & Mobility, Transport and Building, City, and to offer cutting-edge technical support covering all phases of the project.

Over the years, Ingerop has developed specific skills for mass rapid transport in cities, ranging from large-scale automatic metros to simple, economical metro lines. Over the years, the group has designed several metro lines for regional cities such as Rennes, but also for major capitals such as Lima, Cairo and Paris.

Ingerop was also one of the pioneers in the development of Building Information Modeling (BIM) in France, starting with buildings and then applying it to transport infrastructure and urban engineering.

This design-build contract is a major one for Ingerop, which will be committed to successfully addressing all the issues involved.

Members of the Intencités15 consortium:

  • VINCI Construction Grands Projets (leader)
  • Chantiers Modernes Construction
  • Razel-Bec
  • Dodin Campenon Bernard
  • SDEL Infi
  • Fayat Energie Services
  • ETF
  • Ingerop
  • Artelia
  • JFS Architects
  • Grimshaw
  • AREP Architects
  • Archi 5 Prod
  • Philippe Gazeau Architect