ⓘ List of Interstate Highways in Montana. The Interstate Highways in Montana are the segments of the Dwight D. Eisenhower National System of Interstate and Defens ..

                                     

ⓘ List of Interstate Highways in Montana

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 in the U.S. state of Montana.

The states Interstate highways, totaling 1.189 miles 1.914 km, were built between 1956 and 1988 at a cost of $1.22 billion. 95 percent of the system serves rural areas, the highest proportion of any state under Interstate program.