The highway was rerouted to assume MT 34 in the early 1960s and was removed from the cross-state corridor, along which it was mostly replaced by US 287, in the mid-1960s.
The highway was rerouted to assume MT 34 in the early 1960s. This was along which it was mostly replaced by US 287. This was in the mid-1960s. The highway was removed from the cross-state corridor. This was along which it was mostly replaced by US 287. This was in the mid-1960s.