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Map of the Circuito Interior's route around the central cityCircuito at Ribera de San CosmeCircuito Interior.
The Circuito Interior Bicentenario ("Bicentennial Inner Loop") or more commonly, Circuito Interior or even more simply Circuito, is a 42-kilometre-long (26 mi) urban freeway (in parts) and at-grade boulevard (in others), forming a loop around the central neighborhoods of Mexico City. It was built starting in 1961.[1] The Circuito Interior received the appellation Bicentenario (Bicentennial) after a renovation that took place in 2010, Mexico's bicentennial year.
In 1951, 8 km (5.0 mi) of the Río Consulado river's course between the Monumento a la Raza and Mexico City Airport was put underground and the route was opened as a highway. Regent Ernesto P. Uruchurtu decided upon the routing underground of more stretches of the rivers Río Consulado, Río Churubusco and Río de la Piedad. An 18 km (11 mi) route was completed in 1961. In 1974, the Circuito was extended to the south and west, which according to sources at the time resolved 50% of the intersections with severe traffic congestion, with the support of the additional controlled-access roads Río San Joaquin and Parque Vía, together with the construction of the feeder roads Tacuba, Los Hongos and Chapultepec.[2] Its eastern and western parts were finished in 1976.
^Espinosa López, Enrique. Ciudad de México, compendio de su desarrollo urbano, 1521-2000 [Mexico City, Compendium of its Urban Development, 1521-2000]. México, D.F.: Direccion General de Publicaciones IPN. ISBN970-36-0065-4.
