Link here.
Hallesy was also asked what would trigger action to protect U.S. Highway 85 south of Williston, where Missouri River water is nearly to the road.When I was there a couple of weeks ago, I thought "we" had been through the worse, but now I'm not so sure having seen the snowpack in the Rockies that has yet to melt.
Hallesy said he was told by officials from the state Department of Transportation that actions to protect the road would be triggered "once the water touches the white stripe" on the edge of the road. [That seems a bit late to me.]