Infrastructure,
Tunnelling,
Transport tunnels
U-Bahn Linie 17.1 - Paris Grand Paris Express
Grand Paris lots to be launched with a delivery requirement for the 2024 Olympic Games : delivering a part of this line. Key Figures Realization 2019 – 2023 Total lenght 6km Excav. cross section 75 m² Geology Limestones of Saint Ouen, sands of Beau-champ, marls and stones Implenia on site Implenia France[...]