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Montana's secondary system was established in 1942, [4] but secondary highways (S routes) were not signed until the 1960s. [1] S route designations first appeared on the state highway map in 1960 [ 5 ] and are abbreviated as "S-nnn".
The U.S. Highways in Montana are the segments of the United States Numbered Highway System owned and maintained by the Montana Department of Transportation (MDT) in the U.S. state of Montana. Mainline highways
U.S. Highway 191 (US 191) is a north-south United States Numbered Highway in the state of Montana. It extends approximately 442.2 miles (711.7 km) from Yellowstone National Park north to the Canadian border .
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 state's Interstate highways, totaling 1,198 miles (1,928 km), were built between 1956 and 1988 at a cost of $1 ...
Secondary highways first appeared on the state highway map in 1960, [1] even though the secondary system was established in 1942. [2] With very few exceptions, notably MT 287 and the former MT 789, Montana state highways numbered 201 and higher are secondary highways. North on S-486 in Columbia Falls, August 2013
The passing of the Federal-Aid Highway Act of 1956 gave major funding to the department and required it to be greatly expanded. In 1957, the four districts were replaced with five districts. The department moved to a new Highway Complex in 1978. In 1991, the Highway Department was reorganized and became the Montana Department of Transportation.
U.S. Highway 2 (US 2) is an east–west United States Numbered Highway in the state of Montana. It extends approximately 666.645 miles (1,072.861 km) from the Idaho state line east to the North Dakota state line.
1,198.8 miles (1,929.3 km) of the Interstate Highway System, which serve as a thoroughfare for long-distance road journeys, is contained within Montana, and all of these are maintained by the Montana Department of Transportation (MDT). Speed limits are generally 80 mph (130 km/h) in rural areas and 65 mph (105 km/h) in urban areas.