List of Interstate Highways in Montana

Interstate Highways of the Montana Highway System
Typical Interstatehighway markers
Map of main highways (Interstate and U.S.)
System information
Maintained by MDT
Highway names
Interstates:	Interstate n (I-n)
US Highways:	U.S. Highway n (US n)
State:	Montana Highway n (MT n)
Secondary:	Secondary Highway n (S-n)
System links
Montana Highway System Interstate U.S. State Secondary

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.