The Blue Line (Portuguese: Linha Azul) or Seagull Line (Portuguese: Linha da Gaivota) is one of the four lines of Lisbon Metro. It is the only line of the Lisbon Metro entirely underground, without any viaduct.

Quick Facts Blue Line, Overview ...

Blue Line
Lisbon metro station Restauradores
Overview
Other name(s)	Seagull Line
Native name	Linha Azul
Owner	Government-owned corporation
Locale	Lisbon Amadora  Portugal
Termini	Reboleira Santa Apolónia
Connecting lines
Stations	18
Service
Type	Rapid Transit
System	Metropolitano de Lisboa
Operator(s)	Metropolitano de Lisboa, EPE
Rolling stock	ML90, ML95, ML97, ML99
History
Opened	29 December 1959 (64 years ago) (1959-12-29) (original network) 15 July 1995 (28 years ago) (1995-07-15) (independent line)
Technical
Line length	14 km (8.7 mi)
Character	Underground subway
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	750 V DC third rail
Route map Legend 13,724 Reboleira ⇄ L. Sintra: Reboleira × Sorefame 12,765 Amadora Este Alfornelos ⇡ 0AMD0  ⇣ 0ODV0  ⇡ 0ODV0  ⇣ 0LSB0  branch line → PMO III 10,747 Pontinha PMO III Pontinha 09,927 Carnide 09,146 Colégio Militar/Luz Alto dos Moinhos Laranjeiras PMO I Sete Rios (closed) ⇄ L. Cintura: Sete Rios 06,591 Jardim Zoológico (until 1995 Sete Rios) × L. Cintura Praça de Espanha (until 1995 Palhavã) branch line → PMO I (closed) Red Line → Campolide × Red Line branch line → Red Line São Sebastião ⇄ Red Line Red Line → Saldanha Parque Yellow Line → Picoas ➀ branch line → Yellow Line ➁ "Y" line → Picoas (until 1995) × Yellow Line 03,791 Marquês de Pombal (until 1995 Rotunda) ⇄ Yellow Line Yellow Line → Rato Avenida 02,691 Restauradores ⇄ L. Sintra: Rossio Green Line → Rossio 12th branch (closed 1998) × Green Line 02,025 Baixa-Chiado ⇄ Green Line Elev. Município ventilation shaft branch line → '''Blue Line''' × Tram (R. V. Cordón) × Tram (R. Arsenal) Green Line → Cais do Sodré ventilation shaft × Tagus Terreiro do Paço Alfândega (pj. 1993; canc.) 00,000 Santa Apolónia ⇄ L. Norte: Santa Apolónia Topographic map

Close

• 29 December 1959: Opening of the original Lisbon Metro network with a Y shape. Common branch stations: Restauradores, Avenida, Rotunda (former name of the Marquês de Pombal station and where the line would split into the two branches). Current Blue Line branch stations (coming from Rotunda station): Parque, São Sebastião, Palhavã (former name of the Praça de Espanha station) and Sete Rios (former name of the Jardim Zoológico station). Current Yellow Line branch stations (coming from Rotunda station): Picoas, Saldanha, Campo Pequeno and Entre Campos.
• 27 January 1963: Opening of the Rossio station. Main branch route: Restauradores - Rossio.
• 28 September 1966: Opening of the Socorro (former name of the Martim Moniz station), Intendente and Anjos stations. Main branch route: Restauradores - Anjos.
• 18 June 1972: Opening of the Arroios, Alameda, Areeiro, Roma and Alvalade stations. Main branch route: Restauradores - Alvalade.
• 15 October 1988: Opening of the Cidade Universitária, Laranjeiras, Alto dos Moinhos and Colégio Militar/Luz stations. Current Blue Line branch route: Rotunda - Colégio Militar/Luz. Current Yellow Line branch route: Rotunda - Cidade Universitária.
• 3 April 1993: Opening of the Campo Grande station. Main branch route: Restauradores - Campo Grande. Current Yellow Line branch route: Rotunda - Campo Grande.
• 15 July 1995: Creation of the Blue and Yellow lines by building a second Rotunda station. New Blue line route: Colégio Militar/Luz - Campo Grande.
• 18 October 1997: Opening of the Carnide and Pontinha stations. Line route: Pontinha - Campo Grande.
• 1 March 1998: Palhavã station is renamed to Marquês de Pombal, Sete Rios station is renamed to Jardim Zoológico and Socorro station is renamed to Martim Moniz.
• 3 March 1998: Creation of the Blue and Green line by closing the Restauradores - Rossio tunnel. New Blue line route: Pontinha - Restauradores.
• 8 August 1998: Opening of the Baixa-Chiado station. Line route: Pontinha - Baixa-Chiado.
• 15 May 2004: Opening of the Alfornelos and Amadora Este stations. Line route: Amadora Este - Baixa-Chiado.
• 19 December 2007: Opening of the Terreiro do Paço and Santa Apolónia stations. Line route: Amadora Este - Santa Apolónia.
• 13 April 2016: Opening of the Reboleira station. Line route: Reboleira - Santa Apolónia.^[2]

• List of Lisbon metro stations