Additional information for the negotiated invitation to tender, deadline 11.04.2017, for civil works for tunnels, opened and covered trenches, railway stations, ancillary works on Line 18 of the Grand Paris Express. The bid includes two lots : lot 1 includes 11.4 km tunnel to be driven by a TBM with 7.8 m diameter, 3 underground stations (Antonypole, Massy Opera, Massy-Palaiseau), duration 67 months ; lot 3 includes 8.2 km tunnel driven by TBMs and 3 underground stations at Saint-Quentin-Est, Satory and Versailles-Chantiers, with a 96 months duration. Contact Societe du Grand Paris, att.n Selma Mouloud, Saint-Denis, tel +33 182462000, fax +33 182462031, email email@example.com. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=102391-2017. Ref. n. 2017PN007-candidatures. 12/17.