Construction of maintenance halls for routine maintenance and overhaul of line 9 metro trains.
Apart from two large halls, the operation also comprises construction of several adjoining structures: the bogie major overhaul hall, the bogie cleaning pit, the industrial water discharge station, the opening giving trains access to the site. The foundations of all these structures are either on piles or diaphragm walls.
Also construction of a five storey building with four basement levels for offices and flats for RATP personnel.





