Category:State highways in Ohio

Current Ohio highway marker. Markers of three-digit highways are generally wider than markers of two-digit highways.

The following are articles about state highways in the U.S. state of Ohio. The Ohio Department of Transportation maintains a system of state highways, usually called State Routes (SR). Within the State of Ohio, state route markers consist of a white badge shaped like Ohio, often against a black background, with a black route number in the center. U.S. and Interstate highways are also classified as state routes in Ohio.

There are no state-numbered routes which duplicate an existing U.S. or Interstate highway in Ohio.

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v t e Categories of numbered highways in the United States
National systems	Interstate Highways U.S. Routes
State highways	Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming
Other areas	District of Columbia Guam Puerto Rico U.S. Virgin Islands