2018-2022 Overpass in Mantes-la-Jolie
Design studies (G2 PRO) and geotechnical supervision of construction (G4) for the construction of the Mantes-la-Jolie overpass as part of the westward extension of the RER E (EOLE) regional express
Widening of the A41 North (Haute-Savoie) to 2×3 lanes
Line 17: Société du Grand Paris
MIGA Project: Construction of an underground gallery at the low-noise underground laboratory
Since 2013 – Line 15 of the “Grand Paris Express” metro system
Design studies in the preliminary design and detailed design phases
Since 2012 – CIGEO Project Haute-Marne & Meuse Site
System project management: preliminary civil engineering studies for “underground structures” and assistance to the project owner for the preliminary design and detailed design phases.
2011 – Creation of GEOS Ile-de-France
As part of its expansion, GEOS Archamps is setting up a second office based at INGEROP’s premises in the Paris region.
Since 2011 – Geneva Airport East Wing Project
Complete project management: Infrastructure, facilities, and networks
2007 – SERT becomes GEOS Lausanne
SERT Lausanne becomes a branch of GEOS Consulting Engineers in Switzerland.
2006-2008 A41 North Motorway Geneva-Annecy Section
Project management assistance and expert services for the Technical Department
2005 – GEOS joins the INGEROP engineering group
GEOS joins the INGEROP engineering group based in Rueil-Malmaison (92).
2001 – SERT joins GEOS
GEOS Geneva becomes majority shareholder of SERT Lausanne.
1999-2000 Rehabilitation of the Mont Blanc Tunnel in Chamonix
Project management assistance for preliminary work. Preparation of the project management consultation file for tunnel rehabilitation. Design and supervision of tunnel safety works over a 2 km stretch.
1999-2004 Loetschberg Tunnel in Switzerland
Participation in the project management consortium
1989 – Creation of GEOS Archamps
In order to expand its business, GEOS Geneva is setting up a sister company of the same name in Archamps (74), in neighboring France.
1987-1993 Confignon Tunnel in Geneva
Construction of a two-tube highway tunnel: Complete project, bidding, general and local construction management, performance monitoring.
1984-1989 Great Man-Made River Project in Libya
Design of all geotechnical works, conditions for excavation to a depth of 8 m for an aqueduct with a diameter of 4 m.
1979 – Creation of SERT Lausanne
The engineering company SERT is founded in Lausanne (Switzerland) by Jean-François Nicod and Jean-Michel Simon.
1976 – Creation of GEOS Consulting Engineers in Geneva
GEOS Ingénieurs Conseils was founded in Geneva, Switzerland, by René Marche and Alain Ménoret.
