So much of the Trans-Canada_Highway was just a 2 lane backcountry road. Then eventually the challenge was to make it to become at least a 4 lane divided highway.
https://en.wikipedia.org/wiki/Manitoba_Highway_1
https://en.wikipedia.org/wiki/National_Highway_System_(Canada)#Manitoba
https://vancouver.citynews.ca/2023/06/15/manitoba-bus-crash-canada
https://thedigitallabyrinth.blogspot.com/search?q=highways TCH