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'Autoroute 15' (also called the 'Decarie Expressway' (English) or 'Autoroute Décarie' (French) between the Turcot and Decarie Interchanges in Montreal and the 'Laurentian Autoroute' (English) 'Autoroute des Laurentides' (French) north of Autoroute 40) is a highway in western Quebec, Canada. It is currently the only constructed north-south Autoroute to go out of Montreal on both sides (until a new bridge is built to connect both ends of A-25), running from the United States border at Saint-Bernard-de-Lacolle (where it continues as Interstate 87) to Sainte-Agathe-des-Monts with an eventual continuation beyond Mont-Tremblant. The total length of A-15 is currently 164 km (102 miles), including a short concurrency (4 kilometers/2.5 miles) with Autoroute 40 (Boulevard/Autoroute Métropolitan) that connects the two main sections.
The southern section of A-15 connects the south shore suburbs of Montreal and is also the primary trade corridor between New York and Montreal. This was the former Route 9, and connected with US 9 on the western shore of Lake Champlain. In Brossard, it joins up with A-10 and A-20 across the Champlain Bridge into Montreal. The A-10 splits off almost immediately after crossing the bridge to head into downtown Montreal at the Bonaventure Expressway and the A-20 splits off shortly after at the Turcot Interchange (''échangeur Turcot''), leaving the A-15 to continue northward as Autoroute Décarie until the Decarie Interchange (''échangeur Décarie'') with the A-40 at the point where it turns from the Trans-Canada into the Metropolitan Expressway.

After its concurrency with A-40, the northern section of A-15 is the main freeway route to the Laurentians until it downgrades to Route 117. It also links up to the northern suburbs of Montreal, as well as provides a connection to the A-440 and the A-50 in Mirabel. It was opened in the 1960s as a toll road, although the tolls were later removed. In the future, it is possible that the A-15 may continue even farther north, past Mont-Tremblant, as Route 117 is already an at-grade expressway with a freeway bypass of Saint-Jovite completed, and the name ''Autoroute des Laurentides'' is also recognized on the freeway bypass (and exit numbers continue). This section is numbered separately from the southern section as if it were a different route. The northern route is also part of the Trans-Canada Highway.
The route is also connected to Autoroute 30 in Candiac which will be completed to Autoroute 20 in 2009 providing a quicker access to the south shore of Montreal, to southern communities located alongside Highway 15 and to the US-Canadian border in Lacolle. It will also give a quicker access from there to areas west of Montreal and also Ottawa and Gatineau.

Contents

Exit list

2000 Overpass Collapse

1987 flash flood event

External links

Exit list

Location	#	Destinations	Notes
Saint-Bernard-de-Lacolle	1	Montée Glass, Montée Guay
	6
	11	Montée Henrysburg
	13	Chemin Murray	Southbound exit only
Saint-Patrice-de-Sherrington, Saint-Jacques-le-Mineur	21
Saint-Édouard	29	Saint-Édouard, Saint-Jacques
Saint-Mathieu	38	Saint-Mathieu, Saint-Philippe
Candiac	42		South end of Route 132 overlap
	44	Boulevard Montcalm - Candiac
	45		Northbound exit and southbound entrance
La Prairie	46	Boulevard Salaberry - La Prairie
	47	Rue Saint-Henri - La Prairie	Northbound exit and entrance
	47	Parc de la Marina	Southbound exit and entrance
Brossard	50	Boulevard Matte
	51	Boulevard Rivard	Southbound exit is via exit 50
	51	Rue Riviera	Southbound exit and entrance
	52	Boulevard Rome
			North end of Route 132 overlap; south end of A-20 overlap
		Boulevard Marie-Victorin	Exits only
		, Vermont	South end of A-10 overlap
	Champlain Bridge over the Saint Lawrence River
Montreal
	57	Île de Soeurs
	58		North end of A-10 overlap; northbound exit and southbound entrance
	60
	61	Avenue Atwater, Rue Saint-Patrick
	62	Boulevard de La Vérendrye - Verdun
	63	, Toronto	North end of A-20 overlap; signed as exits 63-E (east) and 63-O (west) southbound
	64
	66	Chemin Côte Saint-Luc, Chemin Queen-Mary
	69	Rue Jean-Talon, Rue de la Savane, Avenue Van Horne
	70-O	, Ottawa	South end of A-40/TCH overlap
	67
	68	Rue Stinson, Chemin Rockland, Boulevard de L'Acadie
	1-E
	2	Chemin Côte-Vertu - Saint-Laurent
	2	Boulevard de L'Acadie	Northbound exit and entrance
	3	Boulevard Henri-Bourassa	No northbound exit
	4	Rue de Salaberry	Signed as exits 4-E (east) and 4-O (west) southbound
	Médéric Martin Bridge over the Rivière des Prairies
Laval
	7	Boulevard de la Concorde, Boulevard Cartier, Boulevard Notre Dame
	8		Southbound exit is via exit 10
	10
	14		Signed as exits 14-N (north) and 14-S (south) southbound
	16	Boulevard Sainte-Rose
	Rivière des Mille Îles
Boisbriand
	19
Boisbriand, Sainte-Thérèse	20		Signed as exits 20-E (east) and 20-O (west)
	23	Rue Saint-Charles - Mirabel, Saint-Augustin
Mirabel, Blainville	25	Blainville
Mirabel	31	Mirabel, Saint-Janvier, Sainte-Monique
	35
	39
Saint-Jérôme	41	Rue Brière
	43	Saint-Jérôme, Bellefeuille, Saint-Colomban	Signed as exits 43-E (east) and 43-O (west)
	45
	51	Aire de Service La Porte du Nord (rest area)
Prévost	55	Prévost	Northbound exit and southbound entrance
Sainte-Anne-des-Lacs	57	Sainte-Anne-des-Lacs	Northbound exit and southbound entrance
	58	Chemin Avila - Piedmont
Saint-Sauveur	60
Sainte-Adèle	64	Chemin du Mont-Gabriel
	67		Northbound exit and southbound entrance
	69
	72	Montée à Séraphin, Chemin du Mont-Sauvage - Sainte-Adèle	Northbound exit and southbound entrance
Val-Morin	76		Northbound exit and southbound entrance
Val-David	80	7e Rang - Val-David	Northbound exit and southbound entrance
Sainte-Agathe-des-Monts	83		Northbound exit and southbound entrance
	86
	88	Rue Demontigny	Northbound exit and southbound entrance
	89

2000 Overpass Collapse

On June 18, 2000, the southern portion of the Boulevard du Souvenir overpass, which crosses the Autoroute, collapsed into the roadway, killing one and injuring two when cars were crushed underneath the structure. Sixteen beams weighing about 70 tons each fell. The highway was closed for several days while workers removed the fallen debris. The remains of the structure were later demolished as well for safety reasons according to then Quebec Transport Minister Guy Chevrette. A new overpass was built less than three years later. A similar incident occurred on September 30, 2006 also in Laval, on Autoroute 19 where five were killed.
The overpass was under construction at the time the incident occurred. The company in charge of the project was Beaver Ridge, a company that was under bankruptcy protection and was without a construction license for about 4 months. Dessau-Soprin was an engineering firm that was supervising the project operations. [1] [2]
[3]
The city of Laval affirmed that there discoveries prior to the collapsed that there were problems with some of the beams of the overpass but haven't mentioned the exact nature of it. Beaver Ridge president Mario D'Errico told Le Devoir that the collapse was caused by a rupture of one of the beams which was later confirmed by Transports Quebec employee citing an instability of one of them which caused the collapse of every one on the south side. Generally, beams are fixed together in the form of an X.[4] [5]
Inspectors from the Commission de la sante et de la securite du Quebec (CSST) noticed some irregularities in the workplace several months before the incident.The CSST blamed Beaver Ridge for security flaws and had demanded changes in regards to the beam and formwork structures . In a report published in 2003, they had also discovered that there were communication problems at the site. [6] [7]
Public audiences started in late 2000 with Coroner Gilles Perron in charge of the case. After the inquest, Beaver Ridge was severely blamed for constructions flaws. In 2003, an engineer had mentioned that he a presented incomplete and inadequate plans for the project. No criminal charges were laid in the case.[8].
Soon after the Souvenir incident, a study by the Montreal Gazette along with Transports Quebec and the City of Montreal discovered that several overpasses of the Décarie Expressway were in poor condition [9] which required extensive repairs and renovations during the following years.

1987 flash flood event

On July 14, 1987, a sudden torrential downpour caused by an HP supercell thundertstorm dumped over 100 millimetres (4 inches) of rain in just over one hour across the city. The Décarie Expressway which is below-grade was heavily flooded and became a river. At some locations, the water was nearly 4 meters deep on the roadway. Over 300 vehicles were abandoned when they were submerged. 2 people were killed by the storm [10] including one on the Expressway.
On July 5, 2005, another torrential downpour flooded portions of the Expressway after several manhole covers blew over. [11]

External links

★ A-15 at Exitlists.com

★ A-15 at Quebec Autoroutes