I swear to pizza, in my hometown they are removing TWO ENTIRE MOUNTAINS because rocks keep slipping on to ONE of the South-bound lanes. Last I heard, the estimated cost is over $50M. Only 50k people live in the entire metro area. Population is halving about every generation on top of that. Best part is, this route runs alongside a river. On the other side of that river is an identical route. They could literally just shut down the road and not even need to build any new bridges...