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East extension of Paris metro line 11 – lot GC01

Project
Location
Paris - France
Type
Construction of a tunnel and metro stations
Subsidiary
NGE GC

Construction of the tunnel and 4 metro stations for the eastern extension of the Paris metro line 11 between La Dhuys and Serge Gainsbourg stations.

NGE used a tunnel boring machine « Sofia » for this 3km circular tunnel, 9m in diameter.

The project includes the construction of 4 underground stations with dimensions: 100 m x 20 m and 25 to 30 m in depth.

Construction of 3 ventilation structures and fire-access vents made as reinforced wells.

The key figures
of the project

3
km of tunnel drilled with TBM
4
underground stations
72 000
m3 of concrete