Quebec Autoroute 50
|Autoroute de l'Outaouais|
|Maintained by Transports Québec|
|Length:||159 km (99 mi)|
|Existed:||1975 – present|
|A-15 in Mirabel|
|East end:||Route 117 near Mirabel|
|Major cities:||Gatineau, L'Ange-Gardien, Lachute, Mirabel|
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 26th 2012 and the two-lane freeway opened for traffic on the full 159 km (98.8 mi) length.
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 kilometers 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 coupled with 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 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. There are no other plans to connect the two highways as a continuous autoroute.
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 recent multi-fatality accident occurred on highway 148 near Buckingham, a section of highway that A-50 would bypass.
There is some support to rename the highway to Autoroute Maurice-Richard after historic Montreal Canadiens hockey player Maurice Richard, but the Commission de toponymie du Québec has chosen to wait until the section between Buckingham and Notre-Dame-de-Bonsecours is finished before making a decision.
Safety improvements 
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 will be the first installation of its kind in Quebec and serve as a pilot project.
Exit list 
Note: exit numbers in parentheses are not signed, but are based on kilometre posts.
|Gatineau||(133)||Rue Montcalm||At-grade intersection - Western terminus|
|134||Boulevard des Allumettières (formerly Boulevard Saint-Laurent) (Route 148)||Westbound exit and eastbound entrance only|
|135||Autoroute 5 (Autoroute de la Gatineau) / Ottawa / Boulevard Maisonneuve (downtown Hull)|
|138||Rue Saint-Louis (Route 307)|
|139||Boulevard Maloney (Route 148)||Eastbound exit and westbound entrance only|
|140||Boulevard de la Gappe|
|141||Boulevard de La Vérendrye||Eastbound exit and westbound entrance only|
|150||Boulevard Lorrain (Route 366)|
|154||Boulevard de l'Aéroport|
|159||Rue des Laurentides|
|165||Rue Georges||Eastbound exit and westbound entrance only|
|166||Avenue de Buckingham (Route 315 & Route 148)||Transition from 4 to 2 lanes or vice-versa|
|L'Ange-Gardien||174||Chemin Doherty (Route 309)|
|Lochaber - Thurso||187||Route 317|
|239||Chemin Scotch (Route 344)|
|254||Route du Canton (Route 148)||Transition from 2 to 4 lanes or vice-versa|
|Lachute||258||Avenue d'Argenteuil (Route 327)|
|260||Chemin Bethany (Route 329)||Transition from 4 to 2 lanes or vice-versa|
|(281)||Rue Helen-Bristol||At-grade intersection|
|(283)||Rue Louis-Bisson||At-grade intersection|
|285||Mirabel International Airport||Transition from 2 to 4 lanes or vice-versa|
|292||Autoroute 15 (Autoroute des Laurentides)|
|(293)||Boulevard Curé-Labelle (Route 117)||At-grade intersection - Eastern terminus|
- "Répertoire des autoroutes du Québec" (in French). Transports Québec. Retrieved 2008-02-23.
- "Ouverture du dernier tronçon de l'autoroute 50 | Ottawa–Gatineau" (in français). Radio-Canada. 2012-11-26. Retrieved 2012-12-04.
- "L'autoroute 50 est bel et bien une autoroute, soutient le MTQ | Ottawa–Gatineau" (in français). Radio-Canada. 2012-11-27. Retrieved 2012-12-04.
- "Gatineau man, 61, dies in 14-vehicle crash". CBC News. 2007-03-15.
- Communiqué: L'Autoroute 50 - Commission de toponymie, retrieved September 3, 2007
|Wikimedia Commons has media related to: Quebec Autoroute 50|
- Google Maps: western section of Autoroute 50 from Gatineau to Thurso
- Google Maps: eastern section of Autoroute 50 from Grenville to Mirabel
- Transports Quebec Autoroute 50 Project Description and Timeline (in French)
- Transports Quebec Outaouais Projects Description and Timeline (in French)
- A-50 at Exitlists.com
- A-50 at Quebec Autoroutes
- Transports Quebec Map (French)
- Transports Quebec Map (French)