Open invitation to tender, expiring on the 07.12.2017, for light and heavy maintenance of ventilation in tunnels for APRR, AREA and ADELAC. The contract is divided into 4 lots: tunnel Maurice Lemaire (Lot 1); tunnel Chamoise, Saint-Germain and Chatillon (AIN) of APRR on the A40 motorway (Lot 2); tunnel of AREA and Sinard tunnels on the A43 and A51 motorways (Lot 3); tunnel Mont Sion of ADELAC and the Haute-Savoie A41 Nord motorway (Lot 4). The contract duration is 12 months. For documents please click on the following link https://www.marches-securises.fr. Contact APRR, Saint-Apollinaire, tel +33 680287167, email patrick.pioger@aprr.fr and send the offers to APRR, Saint Apollinaire, email francoise.zastko@aprr.fr. Connect to http://ted.publications.eu.int/udl?request=Seek-Deliver&language=en&docid=386995-2017, GU S 189 and http://ted.publications.eu.int/udl?request=Seek- Deliver & language = it & docid = 434357-2017, GU S 209. Ref. 17 01 24 47/17.