Negotiated invitation to tender, deadline 02/11/2021, for engineering and improvement works on the section between the open trench of Tremblay-En-France (included) and the Mesnil-Amelot station (excluded), including the Paris Charles-De-Gaulle Terminal 2 airport station, Line 17, Grand Paris Express (Lot 17.3). For tender documents please click here, where offers must be sent. Contract duration will be 92 months. Contact Societe du Grand Paris, attn Fabiola Tougnon, Saint-Denis, tel +33 182462000, fax +33 182462031, email Marches-sgp@societedugrandparis.fr. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=474508-2021. Ref. n. 2021PN010. 41/21.