Mexico City Metro Line 1 is one of the twelve Metro lines operating in Mexico City, Mexico. Officially inaugurated in 1969, it was the first metro line to be built in the country. Its identifying color is pink, and it runs west–east.

Quick Facts Line 1 / Línea 1, Overview ...

Line 1 / Línea 1
Observatorio terminal
Overview
Locale	Mexico City
Termini	Observatorio Pantitlán
Connecting lines	Observatorio Tacubaya Balderas Salto del Agua Pino Suárez Candelaria San Lázaro Pantitlán
Stations	20
Service
Type	Rapid transit
System	Mexico City Metro
Operator(s)	Sistema de Transporte Colectivo (STC)
Rolling stock	NM-16, NM-22
Ridership	665,171 passengers per day (2019)[1]
History
Opened	4 September 1969
Technical
Line length	16.654 km (10 mi)
Track length	18.828 km (12 mi)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge with roll ways along track
Electrification	Guide bars
Operating speed	36 km/h (22 mph)
Route map Legend Observatorio yard Observatorio Tacubaya Juanacatlán Chapultepec Sevilla Insurgentes Cuauhtémoc Balderas Salto del Agua Isabel la Católica Pino Suárez Merced Candelaria San Lázaro Moctezuma Balbuena Boulevard Puerto Aéreo Gómez Farías Zaragoza Zaragoza workshops Pantitlán This diagram: view talk edit

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Juanacatlán, Tacubaya, and Observatorio, Chapultepec, Sevilla, Insurgentes, Cuauhtémoc, Balderas, and Salto del Agua stations are currently closed for reconstruction through September 2024.

The line is built under several avenues: Parque Lira, Pedro Antonio de los Santos, Circuito Interior, Avenida de los Insurgentes, Avenida Chapultepec, Arcos de Belén, Balderas, Eje Central Lázaro Cárdenas, José María Izazaga, Isabel la Católica, Anillo de Circunvalación, Congreso de la Unión, Eduardo Molina, and Ignacio Zaragoza.

It connects with Lines 7 and 9 at the Station Tacubaya, Line 3 at Balderas, Line 8 at Salto del Agua, Line 2 at Pino Suárez, Line 4 at Candelaria, Line B at San Lázaro and Lines 5, 9 and A at Pantitlán. When Line 12 extension is completed, it will also connect with Line 12 at Observatorio.^[2]

The first section of Line 1 was opened on 4 September 1969 as part of Mexico City Metro's first construction stage, it was inaugurated by Gustavo Díaz Ordaz, President of Mexico from 1964 to 1970, and Alfonso Corona del Rosal, Regent of the Federal District Department.^[3] The inauguration ceremony took place at the Insurgentes station.^[4]

The next day the line was opened to the public. To the original route (Chapultepec–Zaragoza) a new station, Juanacatlán, was added to the west on 11 April 1970, and the first correspondencia (a transfer station) became functional on 1 August 1970 when Line 2 was opened. The two westernmost stations Tacubaya and current terminal Observatorio were inaugurated on 20 November 1970 and 10 June 1972 respectively.

Station Pantitlán was opened on 22 August 1984 as the eastern terminal during a fourth and final expansion. All twenty stations have operated since then, running a total track length of 18.83 km (11.70 mi), of which 16.65 km (10.35 mi) are passenger track. The 1 is the only line in the network that is fully underground except for some surface track in Observatorio used for maintenance.

As of 2020, an extension of Line 12 is under construction, this stretch will connect Line 12 with Line 1 at the Observatorio station.^[2]

Authorities warned on 10 August 2020 that Line 1 is in danger of a major fire due to an aging electrical system that is in need of major improvements. Lines 1, 2, and 3 report an average of 2.5 electrical failures daily.^[5] As a result, the line started undergo renovations that require its closure. The first closure was from Pantitlán to Salto de Agua stations starting on 11 July 2022 and it was expected to conclude in March 2023. The second closure was expected to start in March 2023 from Balderas to Observatorio stations and was expected to conclude in August 2023. During both periods, all railway elements will be replaced with modern material, the wiring will be replaced, damage due to leaks and cracks will be repaired, stations that are not yet modernized will be updated, and accessibility will be added to stations that lack it.^[6][7]

In April 2023, Siemens Mobility claimed that they would install CBTC on Line 1.^[8] On October 29, 2023, the modernized section of Line 1 was inaugurated.^[9] The second stage is expected to begin on 9 November 2023.^[10]

• September 4, 1969: from Chapultepec to Zaragoza.
• April 11, 1970: from Chapultepec to Juanacatlán.
• November 20, 1970: from Juanacatlán to Tacubaya.
• June 10, 1972: from Tacubaya to Observatorio.
• August 22, 1984: from Zaragoza to Pantitlán.

Line 1 has had different types of rolling stock throughout the years.

• Alstom MP-68, 1969–2018
• Concarril NM-73, 1978–2018
• Alstom MP-82, 1985–1994
• Concarril NM-83, 1989–2018
• CAF NE-92, 1994–2023
• Bombardier NC-82, 2006–2007
• Concarril NM-79, 2011–2012
• CAF NM-16, since 2019
• CRRC NM-22, since 2024

Currently, out of the 390 trains in the Mexico City Metro network, 49 are in service in Line 1.^[11]

Key^{[lower-alpha 1]}

†	Denotes a partially accessible station
‡	Denotes a fully accessible station
	Denotes a metro transfer
	Denotes a connection with the Centro de transferencia modal (CETRAM) system
	Denotes a connection with the Ecobici system
	Denotes a connection with the Metrobús system
	Denotes a connection with the Mexibús system
	Denotes a connection with the public bus system
	Denotes a connection with the Red de Transporte de Pasajeros (RTP) system
	Denotes a connection with the Trolleybus system

The stations from west to east:

More information No., Station ...

No.	Station	Date opened	Level	Distance (km)		Connection	Location
				Between stations	Total
01	Pantitlán ‡	August 22, 1984	Underground trench	-	0.0	Line 5 Line 9 (out of service) Line A Pantitlán Line 4 (Alameda Oriente branch): Pantitlán station (also temporary Line 9 service) Line III: Pantitlán station Route: 168 Line 2: Pantitlán stop Routes: 11-B, 11-C, 19-F, 19-G	Venustiano Carranza
02	Zaragoza ‡	September 4, 1969		1.5	1.5	Zaragoza Routes: 162B, 163, 163A, 163B, 164, 166, 167
03	Gomez Farías †			0.9	2.4
04	Boulevard Puerto Aéreo †			0.7	3.1	Boulevard Puerto Aéreo Route: 43 Line 4: Boulevard Puerto Aéreo stop Routes: 20-B, 22-D
05	Balbuena †			0.8	3.9	Balbuena
06	Moctezuma †			0.8	4.7	Line 4 Moctezuma station (at distance) Line 5 Moctezuma station (at distance) Routes: 19-E, 19-F, 19-G, 19-H (all at distance)
07	San Lázaro ‡			0.7	5.4	Line B San Lázaro Line 4: San Lázaro station Line 5: San Lázaro station East Bus Terminal (TAPO)
08	Candelaria			1.1	6.4	Line 4 Line 4: Cecilio Robelo station (at distance) Route: 37 Route: 5-A
09	Merced ‡			0.9	7.3	Line 4: La Merced station Route: 5-A
10	Pino Suárez ‡			0.8	8.2	Line 2 Passage Zócalo-Pino Suárez Nezahualcóyotl (at distance) Line 4: Pino Suárez station (south route) Routes: 2-A, 31-B, 111-A, 145-A Routes: 17-C, 17-H, 17-I, 19-E, 19-F, 19-G, 19-H	Cuauhtémoc
11	Isabel la Católica ‡			0.5	8.7	Isabel la Católica stop (temporary Line 1 service) Routes: 19-E, 19-F, 19-G, 19-H
12	Salto del Agua †			0.6	9.3	Line 8 Salto del Agua stop (temporary Line 1 service) Line 1: Salto del Agua stop Routes: 19-E, 19-F, 19-G, 19-H
13	Balderas ‡			0.6	9.9	Route: 34-A (also temporary Line 1 service) Line 3 Line 3: Balderas station Routes: 19-E, 19-F, 19-G, 19-H
14	Cuauhtémoc †			0.5	10.5	Line 3: Cuauhtémoc station Route: 34-A (also temporary Line 1 service) Routes: 19-E, 19-F, 19-G, 19-H
15	Insurgentes †			0.9	11.4	Line 1: Glorieta de los Insurgentes station Route: 34-A (also temporary Line 1 service) Routes: 18-C (at distance), 19-E, 19-F, 19-G, 19-H
16	Sevilla †			0.8	12.2	Routes: 19, 19-A, 34-A (also temporary Line 1 service) Routes: 13-D, 18-C, 19-E, 19-F, 19-G, 19-H
17	Chapultepec		Underground two-story trench	0.6	12.9	Chapultepec Line 7: Chapultepec station (at distance) (also temporary Line 1 service) Routes: 11-A, 13-A, 34-A, 115-A, 200 (also temporary Line 1 service) Line 2: Chapultepec stop Line 6: Chapultepec stop Routes: 7-D, 8-A, 8-B, 8-C, 8-D, 13-C, 13-E, 18-C, 18-D, 19-E, 19-F, 19-G, 19-H, 21-A
18	Juanacatlán †	April 11, 1970		1.1	14.0	Routes: 13-A, 115-A (also temporary Line 1 service) Route: 21-A	Miguel Hidalgo
19	Tacubaya †	November 20, 1970	Underground multi-story trench	1.3	15.2	Line 7 Line 9 Tacubaya (at distance) Line 2: Tacubaya station (also temporary Line 1 service) Routes: 110, 110-B, 110-C, 112, 113-B, 115, 118, 119, 200 (also temporary Line 1 service) Routes: 1-B, 9-C, 9-E, 21-A
20	Observatorio †	June 10, 1972	Hillside trench	1.4	16.7	Line 12 (under construction) West Bus Terminal Observatorio El Insurgente (under construction) Observatorio stop (temporary Line 1 service) Route: 21-D	Álvaro Obregón

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The following table shows each of Line 1 stations total and average daily ridership during 2019.^[1]

Line 1 passes near several places of interest.

• Bosque de Chapultepec, city park
  • Museo de Arte Moderno, museum of modern art
  • Chapultepec Castle
  • Heroic Cadets Memorial, a monument dedicated to the memory of the Niños Héroes
  • Chapultepec Zoo
• Estela de Luz, a monument that commemorates the bicentenary of Mexico's independence
• Paseo de la Reforma, emblematic avenue of Mexico City
• Diana the Huntress Fountain, a monumental fountain of Diana located at Paseo de la Reforma
• Angel of Independence, a victory column on a roundabout on the major thoroughfare of Paseo de la Reforma
• Zona Rosa, a neighborhood known for its shopping centers, nightlife, gay community, and Korean community
• Historic center of Mexico City

• List of Mexico City Metro lines