Lima Metro Line 1, Segment 2

Lima Metro Line 1, Segment 2

Lima Metro Line 1

TYLin served as the lead design engineer for the Tren Electrico (Electric Train) Lima Metro Line 1, Segment 2 project in Lima, Peru.

Delivered on schedule, the design-build project comprised a 12.4-kilometer elevated light rail system with 10 passenger stations. A 36,300-square-meter maintenance yard was also constructed after the last station.

Lima Metro Line 1, Segment 2 connects three main municipalities within the City of Lima (Cercado de Lima, El Agustino, and San Juan de Lurigancho), which are home to approximately 1.5 million people. 

As lead design engineer, TYLin was responsible for the alignment, track design, elevated guideway structural analysis and design, station structural, mechanical, electrical, and plumbing design, and systems infrastructure design. The firm also provided construction engineering support.

Two segmental bridges were included as part of the elevated guideway - the first segmental bridges to be constructed in Lima. One 240-meter-long segmental bridge crosses the Rimac River and has a 110-meter-long main span. The second bridge measures 270 meters long with a 124-meter-long main span and carries the light rail system over an existing vehicular bridge.

Lima Metro Line 1 was the largest engineering project designed and completed in Peru to date, and currently serves over 450,000 people.

Project Highlights:

  • Since a portion of the track alignment was adjacent to a liquid gas deposit, TYLin performed an explosion study to assess the effects of an explosion on both the guideway and nearest station.
  • Evacuation Studies, as per National Fire Protection Association (NFPA) 130: Standard for Fixed Guideway Transit and Passenger Rail Systems, were performed using computer simulations for all stations and the guideway.
  • A wheel-rail interaction study was performed to ensure the new rolling stock was compatible with the rail installed during the previous project phase.
  • Construction of the second segmental bridge avoided impacts on the river and the existing bridge, which is part of one of Lima’s busiest roadways, carrying over 37,000 vehicles each day.


Lima Metro Line 1
Global Best Projects Award, 2015
Engineering-News Record (ENR)