List of state highways in Montana

Montana Highway System
Montana Highway System
	Highway markers for MT 3, MT 59, and MT 200
	Map of main highways within Montana
System information
	Maintained by MDT
Formed	1942
Highway names
Interstates	Interstate nn (I-nn)
US Highways	U.S. Highway n (US n)
State	Montana Highway n (MT n)
Secondary	Secondary Highway nnn (S-nnnn)
System links
	Montana Highway System; Interstate; US; State; Secondary;

The state highways in Montana are the state highways owned and maintained by the Montana Department of Transportation (MDT) in the US state of Montana.

Montana's state highways are classified as either primary or secondary.^[1] Several of Montana's state highways (both primary and secondary), or sections thereof, have also been designated as part of the National Highway System.^[1]

^ ^a ^b ^c Multimodal Planning Bureau, Rail, Transit & Planning Division (March 2017). "A Guide to Functional Classification, Highway Systems and Other Route Designations in Montana" (PDF). Montana Department of Transportation. pp. 5–6. Retrieved April 8, 2019.

[guide-1] Multimodal Planning Bureau, Rail, Transit & Planning Division (March 2017). "A Guide to Functional Classification, Highway Systems and Other Route Designations in Montana" (PDF). Montana Department of Transportation. pp. 5–6. Retrieved April 8, 2019.

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