Milan Metro Line 4

Line 4 is a new underground rapid transit line under construction[1] in Milan, Italy, part of the Milan Metro. The line was planned to be completed in 2015, as part of the works for the Milan Expo. However, delays in planning, financing[2] and construction works forced to postpone the opening, and the line is now expected to open between 2022 and 2023.[3]

M4
Overview
Statusunder construction
LocaleMilan, Italy
Stations21
WebsiteOfficial website
Service
TypeRapid transit
SystemMilan Metro
Operator(s)Azienda Trasporti Milanesi
Rolling stockHitachi Rail Italy Driverless Metro
History
Opened2022 (first phase)
Technical
Line length15.2 km (9.4 mi) (when complete)
Track gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification750 V DC third rail
Route map

The line will be 15 km (9.3 mi) long with 21 stations.[4] The line color is blue. The expected annual ridership is 87 million. The total estimated cost is about €1.7 billion. €786 million will be granted by the Italian government, €512 million will come by private investors and €400 million from the municipal government of Milan.[5] The line will feature completely automatic driverless trains[6] and is designed for a capacity of 24–28,000 passengers per hour in each direction.[7]

The consortium ATM-Webuild is responsible for the construction works.[5][8]

Route
Tunnel boring machines used in the project, 2014
Forlanini FS station under construction in 2016

The line is planned to connect the south-western neighborhood of Lorenteggio with the Linate Airport on the east, passing through the city center. All stations are underground.

Station NameTransferProjected opening
San Cristoforo FS October 2023
Segneri
Gelsomini
Frattini
Tolstoj
Bolivar
California
Coni Zugna
Sant'Ambrogio 2023/2024
De Amicis October 2023
Vetra
Santa Sofia
Sforza-Policlinico (Missori) 2023/2024
San Babila 31 January 2023
Tricolore
Dateo December 2022
Susa
Argonne
Stazione Forlanini
Repetti
Linate Aeroporto

Rolling stock

The line will be operated by 37 four-car EMUs manufactured by Hitachi Rail Italy at Reggio Calabria. Because of production problem caused by the COVID-19 pandemic, some were sent to Hitachi Newton Aycliffe in England for final fitting out.[9]

See also

References
  1. "Metrò 4, aprono i cantieri". Corriere della Sera Milano. Retrieved 26 September 2011.
  2. "Tabacci: a rischio il secondo lotto della M4". Corriere della Sera Milano. Retrieved 26 September 2011.
  3. "L'apertura della linea M4 a Milano slitta per ritrovamenti archeologici (e covid)". MilanoToday (in Italian). Retrieved 21 May 2021.
  4. "Linea 4". www.metropolitanamilanese.it. Metropolitana Milanese. Retrieved 22 July 2015.
  5. "M4, lavori assegnati a Impregilo e Atm". Corriere della Sera Milano. Retrieved 26 September 2011.
  6. "Metropolitana M4 approvata, realizzazione Linate – Lorenteggio al via". Cronaca Milano. Retrieved 26 September 2011.
  7. "Milano M4". Metropolitana Milanese. Retrieved 28 December 2011.
  8. "Tar: "Metrò 4, gare regolari". Via ai cantieri". Corriere della Sera. 21 January 2012. Retrieved 22 January 2012.
  9. Milan Metro cars in Newton Aycliffe The Railway Magazine issue 1436 November 2020 page 9
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