Milan Metro Line 4

Milan Metro Line 4
Milan Metro Line 4 logo

The Line 4 is a new underground rapid transit line under construction[1] in Milan, Italy, part of the Milan Metro system. The line was planned to be completed in 2015, as part of the works for the upcoming Milan Expo. However, delays in planning, financing[2] and construction works will probably force to postpone the complete opening, and only the first part of the line is now expected to open by 2015.[3]

The line, when complete, will be 15 km (9.3 mi) long with 21 stations. The expected annual ridership is 87 million. The total estimated cost is about €1.7 billion. 786 million will be granted by the government, 512 million will come by private investors and 400 from the city of Milan.[4] The line will feature completely automatic driverless trains.[5]

The consortium ATM - Impregilo will be responsible for the construction works.[4]


The line is planned to connect the south-western neighborhood of Lorenteggio with the Linate Airport on the east, passing through the city center. Works were planned to begin at Lorenteggio; however, since only one part could be finished in time for the Expo, the one connecting Linate Airport to the city was chosen to be the most important and therefore construction works will proceed in the opposite direction.[3]

    Phase 1 (2015)
    Phase 2 (?)
Station Name Transfer Grade
Lorenteggio [6] Milano S9.svg Tren.svg Underground
Segneri Underground
Gelsomini Underground
Frattini Underground
Tolstoj Underground
Washington-Bolivar Underground
Foppa Underground
Parco Solari Underground
Sant'Ambrogio Milano M2.svg Underground
De Amicis Underground
Vetra Underground
Santa Sofia Underground
Sforza-Policlinico [7] Milano M3.svg Underground
San Babila Milano M1.svg Underground
Tricolore Underground
Dateo Milano S1.svg Milano S5.svg Milano S6.svg Milano S10.svg Underground
Susa Underground
Argonne Underground
Forlanini FS Underground
Forlanini Underground
Linate Aereoporto Pictograms-nps-airport-2.svg Underground



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