In 2000 a black bear ambled across the road as I was descending from Logan. It was later in the morning, but it was a really crappy day, and the pass was not open from the east, so traffic was very minimal.

in 2017, the road was closed to cars east of Avalanche Campground. Saw a fresh pile of bear scat, It was one of several I saw. Without vehicles, the bears were having a good time. Unfortunately, the road opened to vehicles during my ascent.

I hope the NPS posts lots of plowing photos on its Flikr page. It has not the last few years. Several years ago they posted maybe five or six bear photos taken during plowing operations, including one of a mother grizzly and her cub.