Autoroute 15 is a highway in western Quebec , Canada. It is also called the Décarie Expressway (English) or Autoroute Décarie (French) between the Turcot and Décarie Interchanges in Montreal and the Laurentian Autoroute (English) or Autoroute des Laurentides (French) north of Autoroute 40 . It was, until the extension of Autoroute 25 was opened in 2011, the only constructed north-south autoroute to go out of Montreal on both sides. A-15 begins at the end of Interstate 87 at the United States border at Saint-Bernard-de-Lacolle and extends via Montreal to Sainte-Agathe-des-Monts with an eventual continuation beyond Mont-Tremblant . The total length of A-15 is 164 km (101.9 mi), including a short concurrency (4 km or 2.5 mi) with Autoroute 40 (Boulevard/Autoroute Métropolitan) that connects the two main sections. It is one of the few autoroutes in Quebec that does not have any spinoff highways.
31-593: The southern section of A-15 connects the south shore suburbs of Montreal and is also the primary trade corridor route between Montreal and New York City linking Quebec Autoroute 15 to Interstate 87 at the Canada-United States border at the Champlain-St. Bernard de Lacolle Border Crossing . 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
62-651: A pile-up involving more than 200 vehicles in La Prairie , a suburb of Montreal . Two people died and more than 70 were injured. On June 18, 2000, the southern portion of the Boulevard du Souvenir overpass in Laval (which crosses over Quebec Autoroute 15), under reconstruction, collapsed into the roadway, killing one and injuring two when cars were crushed underneath the structure. Sixteen beams weighing about 70 tonnes (69 long tons; 77 short tons) each fell. The contractor
93-571: A total population of 970,779 people. However, at this scale, the proportion of people who commute to Montreal for work declines. Laurentian mountains The Laurentian Mountains , also known as the Laurentians or Laurentides , are a mountain range in Canada . The range is 1,448 km (900 mi) long and ranges in height from 500 m (1,640 ft) with peaks over 1,000 m (3,280 ft). The Laurentian Mountains extend across Labrador and Quebec within
124-621: Is a sunken highway between the northbound and southbound lanes of Decarie Boulevard from the Metropolitan Autoroute at its northern end to Monkland Avenue and the Villa Maria Metro station at its southern end. It was built on a wide expanse of vacant land, donated to the city by the Décarie estate on the condition that a streetcar line would be established. The decommissioning of the streetcar system in 1959 left
155-487: Is a subdivision of the Canadian Shield, and in this area, the oldest rocks of this geologic region are found. These rocks represent a chain of mountains that formed between 1,500 and 900 million years ago. During that time, Laurentia , the geologic core of the Canadian Shield, collided with other continents that were dragged by moving tectonic plates . The Laurentian Mountains contain dense boreal forests . It
186-614: Is already an at-grade expressway with a freeway bypass of Mont-Tremblant 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 . Exit numbering resets at the two interchanges with Autoroute 40 in Montréal . On February 19, 2020, white-out conditions caused
217-434: Is home to some deciduous trees, such as sugar maple , beech , but are rarely found past the northern boundary of the range. The Laurentian region is also rich in walnut , ash , cherry , linden , and oak . The range also contains bogs . The boreal ecosystem is represented by mixed forests , dominated by black spruce and balsam fir to the south, including areas of white birch . Laurentides Wildlife Reserve , which
248-615: Is itself derived from the St. Lawrence River . François-Xavier Garneau , author of Histoire de Canada , was first to use the term "Laurentien" when he coined the name of the mountains in 1845. Early geologists adopted the name for the complex of metamorphic and igneous rocks in this area, with the terms further being applied to the Laurentide Ice Sheet and the Laurentian Shield ( Canadian Shield ). Garneau applied
279-579: Is located in the range, contains mammals such as black bears , bobcats , raccoons, grey wolves , otters , moose , white-tailed deer and caribou , with birds such as the barred owl , American kestrel , and osprey . The Laurentian Mountains are a popular recreational destination in Quebec. The first ski lift in North America was built in the mountain range in 1931, and by the late 1930s, "snow trains" had brought tens of thousands of skiers to
310-845: 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 Décarie Interchange ( échangeur Décarie ) with the A-40 at the point where it turns from
341-522: The East Coast to the Great Lakes . The forests reached heights of 30 to 85 meters high. While the exports of logging grew, it eventually became a wasteful practice, with the felling of trees leaving huge portions of land vulnerable to erosion . Intensive forestry has not entirely ceased in the region. Public and private forests in Quebec have now been entirely mapped, with information such as
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#1732780135603372-852: The Grenville orogeny , in which the Grenville Province formed, a subdivision of the Canadian Shield . During that time, Laurentia , the geologic core of the Canadian Shield, collided with other continents and formed Precambrian rocks which extend across the range. The mountain range is located around other related geographic features, such as the Monteregian Hills and the Adirondack Mountains . The Laurentian Mountains are home to vast extents of boreal ecosystems and mixed forests . The southern areas of
403-977: The Laurentian Upland , which extends as far west as Lake Huron , with foothills extending into northeastern Ontario . Sub-ranges in the upland are the Opeongo Hills , Misquah Hills , Huron Mountains , and the Porcupine Mountains . This region is extensively forested and contains nearly untouched wilderness, with it not being suited for agriculture. One of Quebec's official regions is called Laurentides . The mountain range runs through four other regions; Capitale-Nationale , Outaouais , Lanaudière , and Mauricie . The elevation generally ranges from around 500 m (1,640 ft) to 1,000 m (3,280 ft) with Mont Raoul-Blanchard being its highest peak, at 1,166 m (3,825 ft). Mont Tremblant , Mont Bleu, and Mont des Conscrits are other prominent peaks in
434-527: The Laurentian Upland , which contains foothills in northeastern Ontario . The range is located near the rivers of Ottawa , St. Lawrence , and Saguenay . The Laurentian Mountains primarily stretch across multiple regions in Quebec, with geologic formations such as the Jacques-Cartier Massif located within the range. The Laurentians Mountains are one of the oldest mountain ranges on earth. The range formed around one billion years ago during
465-557: The Laurentians or Laurentides , 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 , A-640 and the A-50 in Mirabel . The first section from A-40 to Saint-Jérôme was opened on August 29, 1959 (source Montreal Star Aug. 29, 1959, page 3) as a toll road, although the tolls were removed in 1985. This section
496-522: The McGill University Health Centre Glen Campus superhospital; and from Autoroute 40 north into Montreal past Du College Station and Côte-Vertu Station / Norgate shopping centre to Poirier Street. Between Monkland Avenue and A 40 , Décarie Boulevard serves as sort of a service road on both sides of the autoroute. After its concurrency with A-40 , the northern section of A-15 is the main highway route to
527-736: The Trans-Canada into the Metropolitan Expressway. The route is also connected to Autoroute 30 in Candiac which was completed to Autoroute 20 in 2012 providing quick access to the south shore of Montreal, to southern communities located alongside Autoroute 15 and to the Canada–US border in Lacolle . It will also give quicker access from there to areas west of Montreal and also Ottawa and Gatineau . The Décarie Autoroute
558-633: The Expressway after several manhole covers blew open from the storm sewers below them being overloaded. South Shore (Montreal) The South Shore ( French : Rive-Sud ) is the general term for the suburbs of Montreal , Quebec located on the southern shore of the Saint Lawrence River opposite the Island of Montreal . The South Shore is located within the Quebec administrative region of Montérégie . The largest city on
589-514: The South Shore area is Longueuil . The South Shore is not represented by any sort of regional government. This is why its territory does not correspond to precise geographic boundaries. However, in 1998, a group of researchers at the Institut national de la recherche scientifique concluded that the South Shore of Montreal consisted of four Regional County Municipalities (RCM).: Following
620-521: The ground to well above the ground as it intersects with Autoroute 20 and Route 136 in the infamous Turcot Interchange (dubbed " Spaghetti Junction " by train crews operating the former CN Rail Turcot Yard). Following the conversion from streetcar line to the highway, the Décarie estate sued the city but was unable to prevail because it did not document its case well enough for the nevertheless sympathetic court. Décarie Boulevard itself continues; from Monkland Avenue south to Saint Jacques Street past
651-475: The mountain range. Jacques-Cartier National Park is located in this mountain range, which is north of Quebec City , residing in the Jacques-Cartier Massif . The Adirondack Mountains , which are located in northeastern New York , have great similarity to the Laurentian Mountains, consisting of the same type of rocks that are part of the Canadian Shield. The Laurentian Mountains are one of
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#1732780135603682-526: The municipal reorganizations in 2001 and 2005, the Champlain RCM evolved into the urban agglomeration of Longueuil , with the municipalities of Boucherville and Saint-Bruno-de-Montarville also added. Today, there are two distinguishable sub-divisions of the South Shore. These are the urban agglomeration of Longueuil and the Couronne-Sud, which extends from Varennes in the north to Châteauguay in
713-612: The new term to the whole range north of the St. Lawrence River. While the region has been popularly referred to as the Laurentians and Les Laurentides , it was officially adopted in 1987 as the territory was defined. The Laurentian Mountains extend from Quebec to Labrador over a distance of 1,448 kilometers (900 miles ). They are partially bounded by the Ottawa , St. Lawrence , and Saguenay River . The Laurentian Mountains reside in
744-472: The oldest mountain ranges in the world, being of Precambrian age, with some regions dating to over one billion years old. The mountain range is between other related geologic features, such as the Monteregian Hills and the older Oka Hills. The mountain range is located within the Grenville orogeny . The rocks of the Laurentian Mountains contain deformation and metamorphic structures that show long periods of tectonic activity occurred. The Grenville Province
775-440: The range are dominated by black spruce and balsam fir , with areas of white birch . The range is home to various wildlife species. The Laurentian Mountains are an important part of the economy of Quebec, as they have been historically been used for forestry and provide access to tourism and outdoor recreation for people in the region. The namesake of the mountains is derived from the term "Laurentide" or "Laurentian", which
806-479: The range. In the area, there is skiing, snowboarding , dog sledding , ice climbing , and snowmobiling during winter at Mont-Tremblant, with rafting , kayaking , hiking, camping, and golf through the region during spring, summer, and fall. The Laurentian Mountains have been historically used for logging . During the European colonization of North America, colonists were met with a woodland that stretched from
837-578: The right-of-way as an obvious choice for a highway and so the Décarie Autoroute was dug there. South of Queen Mary Road , however, were a significant number of houses that were demolished. To avoid demolishing Notre-Dame-de-Grâce Church, the highway makes a slight westerly jog below Côte-Saint-Luc Road and runs through a short tunnel , before emerging between Addington and Botrel Streets and running down to Sherbrooke Street and Saint Jacques Street , where it spectacularly goes from being below
868-473: The south, and from Mont-Saint-Hilaire in the east to the urban agglomeration of Longueuil's borders in the west. The entire south shore comprising the urban agglomeration of Longueuil and the Couronne-Sud totals 700,904 inhabitants. The Greater South Shore extends from Sorel-Tracy in the north to Salaberry-de-Valleyfield in the south, and as far as Saint-Hyacinthe in the east, including the agglomeration of Saint-Jean-sur-Richelieu . The Greater South Shore has
899-571: Was also the first to be designed as an autoroute in the province. It was named Autoroute Montréal-Laurentides during the 1960s. Over the next years, it was extended north to Sainte-Agathe-des-Monts as a new connection to touristic and skiing destinations in the Laurentides including in Saint-Sauveur , Sainte-Adèle and Estérel . In the future, it is possible that the A-15 may continue even farther north, past Mont-Tremblant , as Route 117
930-406: Was faulted for shoddy work. The arched concrete beams were unsecured and tipped over like dominoes , many of them breaking into pieces. The expressway has also seen flooding. On July 14, 1987, a sudden torrential downpour caused by an HP supercell thunderstorm dumped over 100 millimetres (3.9 inches) of rain in just over one hour across the city. The Décarie Expressway, which is below-grade,
961-409: Was heavily flooded and became a river. At some locations, the water reached a maximum of 3.6 metres (12 feet) in depth on the roadway. Over 300 vehicles were abandoned when they were submerged. Two people were killed by the storm. One 80-year-old man on the Expressway drowned and another one was killed by electrical wires ( electrocuted ). On July 5, 2005, another torrential downpour flooded portions of