Some news from the recent flooding in B.C.:
This means that Highway 3 (Hope to Princeton) is the only way in and out of the Lower Mainland by truck. This road is not designed for heavy, high-speed traffic. It goes over two high passes and has difficult winter driving conditions. More severe weather is forecast over the next few days.
The Hope-Princeton was rebuilt together on the west end together with construction of the Coquihalla for Expo 86. The approx 35km from Hope to Manning Park entrance is good 4 lane but un-divided highway. I believe the straightening and addition of passing lanes near Sunday Summit completed a few years ago was the only significant work since 1986. The highway receives less snow than the Coquihalla or even Stevens Pass on US 2 to the south.
Before the Coquihalla opened I can remember huge platoons of vehicles, but that largely disappeared after the Coq opened. For a long time this was the fastest route from the Coast to Okanagan cities from Vernon south.
There are some steep grades near Sunshine Valley and west of Princeton. The rest of the Crowsnest should see an uptick of traffic volume but also some steep grades at Anarchist Mountain, the Salmo-Creston, and Bonanza Pass.