Quebec Route 136 (Montreal)

The Ville-Marie Expressway near Old Montreal

It was originally envisioned that Autoroute 20 would extend from the Turcot Interchange, along the route of the 720, to the Louis Hippolyte Lafontaine Bridge-Tunnel. Indeed, when the first section of the expressway was constructed and opened in the early 1970s, many Montrealers, anticipating that it would eventually replace the Metropolitan Expressway as the primary connector route to the Lafontaine Tunnel, and onward to Quebec City, dubbed the then-unnamed roadway the "Downtown Trans-Canada Highway". The provincial transport ministry (Le ministère des Transports du Québec, or MTQ) had planned to extend the Viger Tunnel east to Autoroute 25 at its Souligny Avenue interchange. The right-of-way has existed since the original layout of the A-720, and buildings along the extension were demolished at that time, even though the 720 was not completed due to cost constraints. The government of Montreal instead converted the portion of Rue Notre Dame east of the Jacques Cartier Bridge into a six-lane urban boulevard, rather than continue a sunken limited-access expressway. The final project was approved, and work began on Souligny Avenue to double the span of the travel lanes.

In 2007, working crews for Transports Québec discovered major cracks in a support pillar and closed several lanes of the expressway. Transports Quebec announced on August 10, 2007, major repair projects for a large section of the Expressway west of the Ville-Marie tunnel.[3]

On July 31, 2011, part of the roof of the Ville-Marie Tunnel collapsed, sending large chunks of concrete to the road below. This incident occurred at a time with little traffic and no vehicles were damaged. Several construction workers were on site at the time and were unharmed.[4] The tunnel had to be closed for repair of the roof and several other parts of the tunnel. Transport Minister Sam Hamad announced on Friday, August 5 that the tunnel would re-open the following day.

In 2021, the A-720 was renamed to Route 136 due to the highway having reduced lane sizes following the reconstruction of the Turcot Interchange.[5][6][7]

The entire route is located in Montréal. 

Location	km[2]	mi	Exit	Destinations	Notes
Montréal	0.00	0.00	–	A-20 west (Autoroute du Souvenir) – Aéroport P.-E.-Trudeau, Toronto	Exit 68 on A-20
			1S	A-15 south / A-20 east (Pont Champlain) – New York, Quebec	Turcot Interchange
			1N	A-15 north (Autoroute Décarie) – Laval, Aéroport Mirabel	Exit 63 on A-15
Westmount	1.6	0.99	2	Rue Saint-Jacques	Westbound exit and eastbound entrance
	2.5	1.6	2	Avenue Atwater	Eastbound exit only
Montréal	3.3	2.1	3	Rue Guy – Centre-Ville Montreal	Eastbound exit and westbound entrance
	3.6	2.2	4	Avenue Atwater	Westbound exit only
	4.3	2.7	4	Rue de la Montagne / Rue Saint-Jacques	Eastbound exit and westbound entrance
	4.4	2.7	West end of the Ville-Marie Tunnel
	5.6	3.5	5	A-10 east (Autoroute Bonaventure) – Pont Champlain, Sherbrooke, Rue University	Westbound exit and eastbound entrance; west end of A-10
	6.5	4.0	6	Boulevard Saint-Laurent / Rue Berri – Vieux-Montreal, Vieux-Port	Eastbound exit and westbound entrance
	7.5	4.7	East end of the Ville-Marie Tunnel
	7.6	4.7	7	Pont Jacques-Cartier / Avenue Papineau / Avenue de Lorimier	Eastbound exit and westbound at-grade intersection
	8.50	5.28	–	Rue Notre-Dame east	Continuation beyond De Lorimier Avenue
	15.5	9.6	15S/15N	Av. Souligny/ A-25 (TCH) to A-20 – Laval, Tunnel Louis-Hippolyte-Lafontaine	Av. Souligny is a brief 2 km (1¼ mile) spur that was intended to link up with Route 136 had it been finished.
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Incomplete access

• 
  Approaching Turcot Interchange
• 
  Start of interchange
• 
  Near end of interchange
• 
  Ville-Marie expressway, after lanes merge from Decarie
• 
  Rue Guy exit
• 
  Rue St-Jacques/Rue de la Montagne exit
• 
  Beginning of tunnel
• 
  Entering the tunnel
• 
  East of Palais de Congres
• 
  Pont Jacques-Cartier exit
• 
  Near eastern terminus
• 
  Highway at Ville-Marie boulevard
• 
  Terminus at Notre-Dame

Wikimedia Commons has media related to Quebec Route 136 (Montreal).

• a-720 at motorways-exits.com
• Ville Marie Autoroute (A-720) at Steve Anderson's montrealroads.com
• Transports Quebec Map (in French)