The Idaho Transportation Department (ITD) is responsible for the establishment and classification of a state highway network, including 5,000 miles (8,000 km) of roads that are classified as Interstate Highways, U.S. Highways, and state highways within the state of Idaho in the United States.[1] The current state highway marker consists of a white background, black numbering, and a solid black geographic outline of the state of Idaho.
^"Frequently Asked Questions". Idaho Transportation Department. Retrieved February 15, 2017.
and 22 Related for: List of state highways in Idaho information
List of state highwaysinIdahoListofhighways numbered 55 "StateHighways 15, 72 to Get New '55' Tags". The Idaho Free Press. Nampa, Idaho. December 20...
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Route 287. The entire route is in Fremont County. U.S. Roads portal ListofstatehighwaysinIdaho "Milepost Log". Idaho Transportation Department. January...
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