Still , Montreal councillors remained cautious and no work was initiated .
By this point , construction was already well underway on Canada 's first subway line in Toronto under Yonge Street , which would be opened in 1954 .
Montreal councillors remained cautious and no work was initiated .
By this point , construction was already well underway on Canada 's first subway line in Toronto under Yonge Street , which would be opened in 1954 .