I am not quite sure what the "work" laws are that stop the train so it blocks the road to traffic. In my mind, that should now happen.
Plan for it and break the train at the crossing, w/ cars on either side but the roadway clear. I am completely ignorant regarding operations of real trains, but common sense still serves human beings quite well these days, when they take the time to use it.
As for the iced rivers drying up barge shipping and moving the burden to trains, weather is always an factor that while it may be predicted, it will never be controlled. Man may _itch about it, but he has to learn to work around it. Kind of like the road crews crying due to lack of salt for the roads. Things happen at times, we cannot exercise control 100% of the time in most cases.
Just my thought, I am sure there are smarter out there that will enlighten me.
Greg