Quebec Autoroute 50

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Autoroute 50 shield

Autoroute 50
Autoroute de l'Outaouais
Route information
Maintained by Transports Québec
Length: 159 km (99 mi)
Existed: 1975[1] – present
Major junctions
West end: Gatineau

A-5 / Route 148 in Gatineau (Hull)
Route 344 in Grenville-sur-la-Rouge

A-15 (TCH) in Mirabel
East end: Route 117 near Mirabel
Major cities: Gatineau, L'Ange-Gardien, Lachute, Mirabel
Highway system

Quebec provincial highways

A-40 A-55
Autoroute 50 between Fassett and Calumet in the Ottawa River Valley

Autoroute 50 (Autoroute de l'Outaouais) is an Autoroute in western Quebec, Canada. It links the City of Gatineau and Canada's National Capital Region to the Greater Montreal area.

Until November 2012, there were two distinct sections of A-50: one section running eastward from Hull and the other westward from Mirabel. The gap in the highway was filled on November 26, 2012, and the two-lane freeway opened for traffic on the full 159 km (98.8 mi) length.[2][3]

The route provides a freeway alternative to Route 148 that does not require crossing into Ontario, unlike the main Trans-Canada Highway route (A-40 / Hwy 417) from metropolitan Montreal.


Oswald Parent (a Liberal MP from Hull) originally proposed construction of the A-50 in 1962. Eight years later, Quebec Premier Jean-Jacques Bertrand announced plans for construction. It was originally envisioned that the A-50 would extend over 400 km from L'Isle-aux-Allumettes at the Ontario border through Saint-Jérôme and Joliette along the Route 148 and 158 corridors to Berthierville and a junction with the A-40. The primary purpose of the A-50 was to connect Ottawa and the Outaouais with Montréal–Mirabel International Airport.

At the time, the Ottawa Macdonald-Cartier International Airport was not yet built, and the national capital lacked highway access to an international air hub. Mirabel's rapid decline as an air hub as well as the Quebec government's decision in the 1970s to impose a moratorium on new autoroute construction resulted in a significantly truncated route for the A-50. Plans for extending the A-50 west of Hull and east of the A-15/TCH were abandoned. The exit numbers, however, are based on that original projected length of the autoroute.

Construction was completed in the fall of 2007 on the road that connects Highway 148 west of the Aylmer and Hull sectors to the A-50 at the Boulevard des Allumettières interchange.

One short section of Route 158 around Joliette was originally signed as A-50 as well until the project was abandoned. In addition, west of the current terminus, a four-lane at-grade expressway continues as Route 148 into the Aylmer section of Gatineau; it may become part of A-50 in the future.

A-50 is a four- to six-lane freeway through Gatineau up to Buckingham, the remainder is mostly a two-lane freeway. Many overpasses are built to accommodate a fully divided, four-lane highway in the future such that only one portion of the overpass is currently used. However, there have been demands for a four-lane highway for the new segment so it can be safer. The first two segments were built with only two lanes and a 2007 multi-fatality accident occurred on highway 148 near Buckingham, a section of highway that A-50 would bypass.[4]

Unusual for a limited-access highway, the A-50 contains two railway crossings at grade, both of the Quebec Gatineau Railway (QGRY). The first crosses the QGRY Lachute Subdivision between exits 260 and 272, at 45°39′04″N 74°13′45″W / 45.651008°N 74.229047°W / 45.651008; -74.229047, while the second crosses the QGRY St-Jerome Spur about 1 km west of exit 279, at 45°40′59″N 74°07′34″W / 45.682948°N 74.125982°W / 45.682948; -74.125982.

There has been some support to rename the highway Autoroute Maurice-Richard after historic Montreal Canadiens hockey player Maurice Richard, but the Commission de toponymie du Québec chose to wait until the section between Buckingham and Notre-Dame-de-Bonsecours was finished before making a decision, and to date no renaming has happened.[5]

Safety improvements[edit]

Following a series of fatal collisions in 2007, it was announced that centreline rumble strips would be installed in various no-passing zones along Autoroute 50. This is the first installation of its kind in Quebec and serves as a pilot project.

The two at-grade intersections at km 281 and 283 were removed in 2016.

Exit list[edit]

Note: exit numbers in parentheses are not signed, but are based on kilometre posts.

Municipality No. Intersecting roads Notes
Gatineau (133) Rue Montcalm At-grade intersection - Western terminus
134 Route 148 (Boulevard des Allumettières (formerly Boulevard Saint-Laurent)) Westbound exit and eastbound entrance only
135 A-5 (Autoroute de la Gatineau) – Ottawa, Maniwaki, Boulevard Maisonneuve (downtown Hull)
138 Route 307 (Rue Saint-Louis)
139 Route 148 (Boulevard Maloney) Eastbound exit and westbound entrance only
140 Boulevard de La Gappe
141 Boulevard de La Vérendrye Eastbound exit and westbound entrance only
145 Montée Paiement
147 Boulevard Labrosse
150 Route 366 (Boulevard Lorrain)
154 Boulevard de l'Aéroport
159 Avenue des Laurentides
165 Rue Georges Eastbound exit and westbound entrance only
166 Route 315 (Avenue de Buckingham) Transition from 4 to 2 lanes or vice versa
171 Chemin Lépine
L'Ange-Gardien 174 Route 309 (Chemin Doherty)
Lochaber - Thurso 187 Route 317
Plaisance 197 Montée Papineau
Papineauville 205 Route 321
Notre-Dame-de-Bonsecours 210 Route 323
Fassett 216 Montée Fassett
Grenville-sur-la-Rouge 226 Chemin Avoca
233 Chemin Kilmar
239 Route 344 (Scotch Road/Chemin Scotch)
Brownsburg-Chatham 252 Montée Labranche
254 Route 148 (Route du Canton) Transition from 2 to 4 lanes or vice versa
Lachute 258 Route 327 (Avenue d'Argenteuil)
260 Route 329 (Chemin Béthanie) Transition from 4 to 2 lanes or vice versa
Mirabel 272 Route 148 (Route Arthur-Sauvé)
279 Chemin St-Simon
(281) Rue Helen-Bristol Former at-grade intersection (closed)
(283) Rue Louis-Bisson Former at-grade intersection (uses exit 285)
285 Mirabel International Airport Transition from 2 to 4 lanes or vice versa
288 Boulevard Henri-Fabre
292 A-15 (TCH) (Autoroute des Laurentides)
(293) Route 117 (Boulevard Curé-Labelle) At-grade intersection - Eastern terminus


  1. ^ "Répertoire des autoroutes du Québec" (in French). Transports Québec. Retrieved 2008-02-23. 
  2. ^ "Ouverture du dernier tronçon de l'autoroute 50 | Ottawa–Gatineau" (in French). Radio-Canada. 2012-11-26. Retrieved 2012-12-04. 
  3. ^ "L'autoroute 50 est bel et bien une autoroute, soutient le MTQ | Ottawa–Gatineau" (in French). Radio-Canada. 2012-11-27. Retrieved 2012-12-04. 
  4. ^ "Gatineau man, 61, dies in 14-vehicle crash". CBC News. 2007-03-15. 
  5. ^ Communiqué: L'Autoroute 50 - Commission de toponymie Archived April 24, 2008, at the Wayback Machine., retrieved September 3, 2007


Route map: Google

KML is from Wikidata