The process is beginning for widening of A-50 from Buckingham towards Thurso. A 7km section will be twinned. It's a start.
http://www.lapresse.ca/le-droit/politiqu...illions-vers-lelargissement-de-la-50.php
From personal experience, the section most in need of twinning is the portion from Mirabel to Lachute.