page_title: Mexico City Metro Line 12
section_title: Expansion
hierarchical_section_title: Mexico City Metro Line 12 / History / Expansion
caption_attribution_description: Obras en el Metro Línea 12, Ciudad de México
context_page_description: Mexico City Metro Line 12 is one of the twelve metro lines operating in Mexico City, Mexico. Inaugurated in 2012, it is the newest metro line of the system. Its identifying color is gold and it runs through the city from southwest to southeast.
  At the moment of its inauguration, the line was also called Línea Dorada and Línea del Bicentenario, the latter to commemorate the Bicentenary of the Mexican War of Independence and the Centenary of the Mexican Revolution in 2010, despite the fact that the line was officially inaugurated two years later.
context_section_description: In 2017 an expansion for Line 12 was announced. Construction started on 29 November 2017. The extension was expected to be completed by 2020, but works were delayed, thus, being projected to open by 2021.
  This project will extend the line from Mixcoac to Observatorio, where it will connect with Line 1 and it will have three new stations and a length of 3.5 km. The two new stations are Valentín Campa and Álvaro Obregón, both situated in the Álvaro Obregón municipality. The totality of the extension is being constructed underground.
  The original 1985 and 1996 plans for Line 12 considered the line going westward from Mixcoac with two new stations, as in the undergoing expansion. Nevertheless, the connection with Line 1 at Observatorio was not planned in the projects.
caption: Construction works of the western expansion of Line 12
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