Scobey to Langdon is state highways, with shared numbering. On streetview it is 2 lane chipseal across the flattest parts of these 2 states. Towns are fewer and smaller than along US2 to the south.
There's a much discussed US2 across those states. There isn't a federal 5 in that area - I5 is NS on the west coast. US5, if it exists, would on the east coast.
