Puente Cal y Canto is a transfer station between the Line 2 and Line 3 of the Santiago Metro. Originally named Mapocho, it was renamed to Puente Cal y Canto shortly after its opening. This name is taken from the former bridge on the Mapocho River, whose remains were found during the construction of the station. The station's platforms walls have a decoration that resembles the architecture of the mentioned bridge. The Line 2 station was opened on 15 September 1987 as the northern terminus of the extension of the line from Los Héroes. On 8 September 2004 the line was extended to Cerro Blanco. The Line 3 station was opened on 22 January 2019 as part of the inaugural section of the line, from Los Libertadores to Fernando Castillo Velasco.