[cmrdporcupine]

It's also not actually true there's only one. To get through northern Ontario, sure. But there's also the Yellowhead all the way from Winnipeg to Haida Gwai, and plenty of highways that connect to Hwy 2 from there.

Trans-Canada is a highway system, not a single road.

It's true that the stretch from Kenora to Sault Ste Marie is a vulnerability. It's tough terrain.

[bryanlarsen]

It's only Kenora to Nipigon that's vulnerable, there's a decent road between Nipigon and Ottawa. Some prefer it because it's flatter.

[cmrdporcupine]

Being from southern Ontario near Toronto, I naturally can't even imagine going that way ;-)

[bryanlarsen]

You'd do it if the road was blocked between the Sault and Nipigon and you couldn't go through the States.