Looks like someone hasn’t engineered that road right. Wouldn’t be surprised if some environmental rules prevent them from some decent mitigation work. Happens all over the Rockies and can be done pretty good.
We used to drive the "Lewiston Grade" in Idaho on trips to visit grandma and grandpa. Was it ever gorgeous and FUN to drive, even as a kid.
Another Idaho scenic road ruined is the old "White Bird Grade."
A third favorite the road planners ruined was the Shoshone Canyon Road west of Cody, Wyoming to Shoshone Lake. In 1960, they built three long tunnels that took all the fun out of winding along the mountain road along the lake. Dad drove the old road a couple times when we were visiting relatives in Idaho when I was a kid. I still remember the road before tunnels!
They had primitive tunnels before the modern long bores were completed in 1960.
The old road is open to hikers today.