The ATI comprising Impregilo (leader), with Astaldi, Ansaldo STS, Ansaldo Breda, ATM and Sirti has been provisionally awarded the tender to select a private partner for Public Private Partnership for the concession for engineering, construction and operation of the proposed Milan metro blue line 4. The 15.2 km line from Linate to San Cristoforo Fs will be driverless and fully automated. The project covers detailed and executive design and construction of two single-track tunnels with 21 stations and a workshop depot. The overall value of the investment is approximately EUR1.7 billion, two thirds of which will be provided by the Italian State and Milan City Council. Impregilo and Astaldi will be responsible for the civil works, value EUR870 million. The concession is for 30 years, with 6.5 years for engineering and construction works and 23.5 years for the operating phase. The project envisages total operating revenues of approximately EUR2.7 billion from 86 million passengers/year, guaranteed by Milan City Council. Impregilo and Astaldi have a 9.6 percent participation in the concession project. 22/11.