Highway 401 Widening - Highway 8 to Townline Road

[plam]

I rarely drive in that direction, so I really don't know ... but why do you feel that it will be a nightmare?

Itll be a nightmare with the hespeler rd bridge and ramps closed for who knows how long. Hespeler road carries a ridiculous amount of traffic, and is the main arterial road in cambridge. Franklin only has a 2 way interchange with the 401, so you are going to have a ridiculous amount of traffic travelling on pinebush and holiday inn drive/Jamison parkway. Franklin and town line will also be affected to an extent by the windening construction. Itll just turn cambridge traffic into a nightmare, because these roads are just not designed for the traffic they're about to take and the lack of multiple easy detour routes means everyone is going the same long way out of their way. 

That said the highway traffic should be fine I'd imagine

Reduced demand is also often a thing. There have been a lot of predictions of traffic-geddon when capacity is removed from highway systems and then not so much when it actually happens.