Quote:
Originally Posted by Chadillaccc
Ohh I see. I get you now. That actually does happen in some areas of Alberta, specifically Jasper National Park along highway 93. However, no one in their right mind would consider 93 an expressway, it's merely the connecting road between the two national parks down an extremely narrow, avalanche-prone valley. I've seen it happen in BC too, specifically this past November driving to Vancouver. We drifted all the way across the Park Bridge (about 200 meters long) over the Kicking Horse River. It was literally the most terrifying/exciting experience of my life, but I almost died of heart failure. I don't think any of us took a breath for 50 seconds. 
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AB 93 isn't particularly avalanche prone. Few AB roads are at avalanche risk as the east side of divide doesn't get much snow and AB has relatively few roads through the mountains due to the extremely rugged terrain. The AB Rockies are avalanche prone due to uneven snowpack build, not due to snow quantity. That means avalanches tend to be frequent but relatively small. The high risk roads are all in BC: Rogers Pass, Coquihalla Pass, Kootenay Pass (highway 3), Duffey Lake Road (near Whistler). That being said, the US has far more avalanche exposed roads and spends huge money keeping them open.