List of state highways in Idaho

	Highway markers for State Highways 3, 75 and 200
Highway names
Interstates	Interstate X (I-X)
US Highways	U.S. Route X (US-X)
System links
	Idaho State Highway System; Interstate; US; State;

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.

[1] "Frequently Asked Questions". Idaho Transportation Department. Retrieved February 15, 2017.

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