The section between Candiac and Boucherville was constructed but remained unsigned, instead being signed as part of Route 132 with a 13 km (8 mi) concurrency with Autoroute 15 and a 15 km (9 mi) concurrency with Autoroute 20.

In 1996, the Quebec Ministry of Transportation stated in 1996 that there was no need for a Gatineau bypass, but it is keeping the corridor for a possible future boulevard or freeway in partnership with the National Capital Commission.

[4][5] In 2006, the National Capital Capital Commission began a study about a new inter-provincial bridge between Ottawa and Gatineau;[6] however, the focus is located east of downtown Ottawa and the Britannia-Deschênes Corridor was not included as part of the study.

Since Mirabel Airport ceased passenger operations in 2004, the A-13 extension was de-prioritised.

The proposed alignment of the Dorion bypass would have begun at present-Autoroute 30 (formerly Autoroute 540), crossed the Ottawa River at the Hydro transmission wire crossing, and joined the current route at Boulevard Don-Quichotte.

Current plans are to move the proposed highway slightly north between the eastern bridge entrance to the town of Dorion and the last junction at Boulevard Harwood (Route 342).

[19][20] A petition to upgrade the existing route to its formerly planned freeway status began circulating in 2014.

In its 1960 master highway plan, the Montreal Metropolitan Committee proposed a new 7 km (4.3 mi) long autoroute along the city's east–west street grid at the northern edge of downtown.

The six-lane autoroute was forecast to handle as many as 4,500 vehicles per hour during weekday peak periods.

[23] Portion only: The initial plan for Autoroute 640 was to continue west from Oka, crossing Lac des Deux Montagnes, to Autoroute 40 in Vaudreuil-Dorion, potentially passing through Oka National Park and Aboriginal lands.

The political sensitivity involved with constructing a freeway through a protected area and the 1990 land dispute regarding a golf course expansion have decreased the likelihood of the extension.