 From August 1, 1960, many municipal services were addressing the project and on November 3, 1961, the Montreal City Council voted appropriations amounting to $132 million ($1.06 billion in 2016) to construct and equip an initial network in length.The 1961 plan reused several previous studies and planned three lines carved into the rock under the city centre to the most populated areas of the city.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.