For the Alencon to Le Mans section, first we had the the Alencon bypass which was free for a couple of years, then the section from LM to Beaumont was opened, as I recall a traffic jam near Beaumont going home that year, and notices saying it would all be open by July, which was typically French.
Of course when it all opened, there were only two toll booths at Alencon, which just couldn't cope, so we have discovered a rat run through Alencon which is a real swine.
So the chances of it opening all in one are thin.
I may be able to find out as the first expeditionary force to collect the tickets has already failed.