The main line, or Line 1 (Green Line) was to pass between the two most important arteries, Saint Catherine and Sherbrooke streets, more or less under the De Maisonneuve Boulevard.
It would extend between the English-speaking west at Atwater station and French-speaking east at Frontenac.
Line 2 (Orange Line) was to run from north of the downtown, from Crémazie station through various residential neighbourhoods to the business district at Place-d'Armes station.

Construction of the first two lines began May 23, 1962 under the supervision of the Director of Public Works, Lucien L'Allier, the "father of the subway".
On June 11, 1963 the construction costs for tunnels being lower than expected, Line 2 (Orange Line) was extended by two stations at each end and the new termini became the Henri-Bourassa and Bonaventure stations.
The project, which employed more than 5,000 workers at its height, and cost the lives of 12 of them, ended on October 14, 1966.
The service was opened gradually between October 1966 and April 1967 as the stations were completed.
The main line, or Line 1 (Green Line) was to pass between the two most important arteries, Saint Catherine and Sherbrooke streets, more or less under the De Maisonneuve Boulevard. It would extend between the English-speaking west at Atwater station and French-speaking east at Frontenac. Line 2 (Orange Line) was to run from north of the downtown, from Crémazie station through various residential neighbourhoods to the business district at Place-d'Armes station.
Construction of the first two lines began May 23, 1962 under the supervision of the Director of Public Works, Lucien L'Allier, the "father of the subway". On June 11, 1963 the construction costs for tunnels being lower than expected, Line 2 (Orange Line) was extended by two stations at each end and the new termini became the Henri-Bourassa and Bonaventure stations. The project, which employed more than 5,000 workers at its height, and cost the lives of 12 of them, ended on October 14, 1966. The service was opened gradually between October 1966 and April 1967 as the stations were completed.
Montreal Metro