Maintained by Transports Québec
West: 53 km (32.9 mi)
East: 54 km (33.6 mi) 
| & in Gatineau (Hull)
|To:||Route 117 near Mirabel|
|Major cities:||Gatineau, L'Ange-Gardien, Lachute, Mirabel|
Currently, there are two distinct sections of A-50: one section running eastward from the central part of Gatineau to just north of Thurso, and the other section from Grenville-sur-la-Rouge to Mirabel just beyond an interchange (Route 117) with A-15. It is expected that the gap will be filled by 2011, as a planned two-lane freeway is under construction. Once completed, A-50 will be 159 km (98.8 mi) long and will provide a faster and safer alternative to Route 148.
It was originally envisioned that A-50 would be a long freeway running all the way from L'Isle-aux-Allumettes at the Ontario border all the way to Joliette along the Route 148 and 158 corridors; however, the long extensions are unlikely to ever be constructed, especially in the western part. (The exit numbers are based on that original plan.) 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. 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 Grenville-sur-la-Rouge is finished before making a decision.
Following a series of fatal collisions in 2007, it was announced that centerline 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.
|Gatineau||121*||Chemin Eardley (Route 148)||(currently an at-grade intersection)|
|122*||Rue Front||(at-grade intersection)|
|122*||Rue Broad / Chemin Klock||(currently an at-grade intersection)|
|123*||Boulevard Wilfrid-Lavigne||(currently an at-grade intersection)|
|124*||Rue Samuel-Eddy||(at-grade intersection)|
|126*||Chemin Vanier||(currently an at-grade intersection)|
|129*||Boulevard Des Grives / Boulevard du Plateau||(possible future interchange or roundabout)|
|131*||Promenade de la Gatineau/Gatineau Parkway|
|132*||Promenade du Lac-des-Fées|
|132*||Rue Labelle / Rue Laramée||(at a roundabout)|
|133*||Rue Demontigny / Rue Dalpé / Rue Laramée||(at a roundabout)|
|133*||Boulevard Saint-Joseph(Route 105) / Rue Montcalm||(currently a roundabout)|
|134*||Boulevard des Allumettières (formerly Boulevard Saint-Laurent)||(current A-50 terminus/westbound only)|
|135||Autoroute 5 (Autoroute de la Gatineau) /Ottawa / Boulevard Maisonneuve (downtown Gatineau)|
|138||Rue Saint-Louis (Route 307)|
|139||Boulevard Maloney (Route 148) (eastbound only)|
|140||Boulevard de la Gappe|
|141||Boulevard La Verendrye||(eastbound only)|
|150||Boulevard Lorrain (Route 366)|
|154||Boulevard de l'Aéroport|
|159||Rue des Laurentides|
|165||Rue Georges||(eastbound only)|
|166||Avenue De Buckingham (Routes 315 & 148||transition from 4 to 2 lanes or vice-versa)|
|L'Ange-Gardien||174||Chemin Doherty (Route 309)|
|Lochaber - Thurso||187||(Route 317)|
|Grenville-sur-la-Rouge||239||Chemin Scotch (Route 344)|
|254||Route du Canton (Route 148)|
|Lachute||258||Avenue d'Argenteuil (Route 327)||(transition from 4 to 2 lanes or vice-versa)|
|260||Chemin Bethany (Route 148)|
|285||Mirabel International Airport||(transition from 2 to 4 lanes or vice-versa)|
|288||Business access and rest area|
|292||Autoroute 15 (Autoroute des Laurentides)|
|293*||Boulevard Curé-Labelle (Route 117)||(currently an at-grade intersection)|