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.[3][4]
The route provides an east-west freeway alternative to Route 148 that does not require travelling in Ontario, unlike the main Trans-Canada Highway route (A-40 / Hwy 417).
Originally named Autoroute de l'Outaouais, it was announced on April 28, 2023, that A-50 would be renamed to Autoroute Guy-Lafleur in honor of the former Montreal Canadiens player who died of lung cancer a year earlier.[5] The Quebec government officially announced the name change on May 4 in Thurso, Lafleur's birthplace.[6]
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.[7]
In 2022, following the death of Montreal Canadiens hockey legend Guy Lafleur (who was a native of Thurso), the Quebec government openly considered renaming the highway after Lafleur following a request made by the Minister Responsible for the Outaouais Region Mathieu Lacombe and by Thurso mayor Benoit Lauzon.[9][10] In late April 2023, Quebec newspaper Le Droit reported that the highway would officially be renamed Autoroute Guy-Lafleur in a ceremony happening in Thurso on Thursday, May 4, 2023, in which both Lacombe and Quebec premierFrançois Legault would be in attendance for.[11][12]
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.
R-117 in Mirabel
