TRANSPORTATION / HIGHWAY TRAVEL
The Interstate Highways in Montana are the segments of the Dwight D. Eisenhower National System of Interstate and Defense Highways owned and maintained by the Montana Department of Transportation (MDT) in the U.S. state of Montana. The following high-speed arteries facilitate traffic movement:
Interstates I-15, I-90, I-94, I-115, I-315
Statewide Travel
Montana Transportation Department
General Inquiries
406-444-6200
https://www.mdt.mt.gov/
Montana Roadway Conditions
Dial 511
https://www.mdt.mt.gov/travinfo/511.shtml