Photo reminds me of Cabbage Hill on I 84 on many winter days. Seven miles of 6% if I remember correctly, it has been a couple years.Highway 95 through Central Id will look like that on many winter mornings, until the plows get to it.
That sure looks like a plow berm on the downhill edge of the road in the original photo.
I looked a little closer and think you're right....but it had snowed again since that plow went through.