The Ville-Marie and Viger tunnels are integral parts of the Montréal transportation network. The two tunnels are located along route 136, formerly known as autoroute 720, along a stretch commonly referred to as autoroute Ville-Marie. The Ville-Marie tunnel was inaugurated in 1974, followed by the Viger tunnel in 1986. The project is expected to be completed in six construction phases. All four sub-phases of phase 1 are now underway (anticipated work time in brackets): 1A – complete repair of the
tunnels at the exit of de la Montagne, including the removal of the last tunnel pergolas (completed); 1B – beginning of the electrical migration work towards 25 kilovolts (completed); 1C – reconstruction of the decks of the Saint-Urbain and Saint-Laurent overpasses (to be completed in winter 2026); and 1D – the replacement of 37 exhaust fans (to be completed in summer 2024).
