Mexico City Metro Line 4
Mexico City Metro Line 4 is the fourth line of Mexico City Metro. The line color is aqua blue and it runs from north to south of the city crossing the city center by its easternmost area. In 2019 it had a total ridership of 29,013,032 passengers, making it the least used line on the system. General information It was built above the former Inguarán Avenue (now Congreso de la Unión) in viaduct solution, this makes it the only line without an underground section. With only ten stations, its short length is countervailed with its high connectivity, having transfer with other metro lines in six stations: Line 6 at Martín Carrera, Line 5 at Consulado, Line B at Morelos, Line 1 at Candelaria, Line 9 at Jamaica and Line 8 at Santa Anita. However, it is also the line with the fewest passengers in the entire system, having only 29,013,032 passengers throughout 2019. The line is also characterized by its above-ground architecture, having all of its station facilities elevated or in massive buildings present in both sides of the street. A side effect of this is having long passageways with connecting lines, generally unused or empty sections in stations, closed