Bioaccez wins the “La Sarenne” tunnel counting project in Isère, near d’Alpe-d ’Huez. As part of the construction of a new hydroelectric development in La Sarenne, Spie Batignolles GC has been awarded 2 lots. This project is taking place in a constrained mountain environment, on the Sarenne river in Isère (38). Spie Batignolles will dig a 3.5 km underground gallery, as well as the digging of a 350 m inclined shaft and the development of the existing gallery. The work will be carried out from January 2021 for a period of 36 months.