Lima Metropolitan. Lines 2 & 4

Lime, Peru

TBM EPB + TBM Variable Density + Conventional

Construction method

33.500 m

Excavated length

9.26m/10.25m

Internal Diameter / Excavation

2 TBM

TBM number

The Lima Metro – Lines 2 and 4 is the largest underground transport infrastructure programme developed in Peru, incorporating more than 33 km of tunnels, stations, ventilation shafts and railway facilities within a high-capacity metropolitan network.

The project is being developed under a 35-year concession model, covering the financing, design, construction, operation, and maintenance of Line 2 and a branch of Line 4 connecting to Jorge Chávez International Airport.

Line 2 runs between Puerta de Callao Station and Municipalidad de Ate Station, along a fully underground alignment of 26.87 km. The project includes 27 stations, two of them interchange stations, three third-track sections, a depot and maintenance facility in Santa Anita, and 27 ventilation and emergency shafts. The line will serve 13 districts, benefiting approximately 2.4 million inhabitants, and will provide interconnections with the Metropolitano BRT system at Central Station, Line 1 of the Metro at 28 de Julio Station, and the future Lines 3 and 4 of the Lima and Callao Metro network.

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The Line 4 branch extends from Gambetta Station to Carmen de la Legua Station, comprising 7.66 km of tunnel, 8 stations—including one interchange—, a depot and maintenance facility in Bocanegra, and 8 ventilation and emergency shafts.

Tunnel excavation is being carried out using two tunnel boring machines, one EPB TBM and one Variable Density TBM, complemented by an 8 km section excavated using conventional methods, allowing construction techniques to be adapted to the specific geotechnical conditions along the alignment.

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The project further strengthens Dragados’ expertise in large-scale urban railway developments.

Project data

33.53 km total length

27 stations on Line 2

8 stations on Line 4 branch

Benefits 2.4 million people

Direct connection to Jorge Chávez International Airport

35-year concession

2.76 million m³ excavation volume

10.25 m excavation diameter

9.26 m internal diameter

EPB and variable-density TBMs

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