Technical and economic offers for the project are due on February 21, with ProInversión expected to award the contract for the 35-year concession on February 28.

The shortlisted consortia are:

• Consorcio Nuevo Metro de Lima, which comprises ACS and FCC, Spain, Impreglio, Italy, AnsaldoBreda, and Cosapi, Peru

• Consorcio Metro Subterráno de Lima, which consists of Astaldi, Italy, and ICA, Mexico, subsidiary Controlador de Operaciones de Infraestructura, and

• Consorcio Metro de Lima Line 2, which includes Brazilian contractors Odebrecht, Andrade Gutierrez, and Queiroz Galvão Constructora, and Graña y Montero, Peru.

The project encompasses construction of 35km of underground railway, including an 8km branch to Jorge Chavez International Airport which will eventually form part of Line 4, as well as 35 stations and depot, electrification, signalling and telecoms systems, and the supply of rolling stock.

The new line is expected carry 644,000 passengers per day, including 24,000 per hour at peak times, and offer a journey time of 45 minutes.