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Highway system of Ohio in the United States From Wikipedia, the free encyclopedia
The Ohio Department of Transportation (ODOT) is responsible for the establishment and classification of a state highway network which includes interstate highways, U.S. highways, and state routes.[1] As with other states, U.S. and Interstate highways are classified as state routes in Ohio. There are no state routes which duplicate an existing U.S. or Interstate highway in Ohio.
![]() ![]() ![]() Standard Highway markers for Ohio | |
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Highway names | |
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Interstates | Interstate nn (I-nn) |
US Highways | U.S. Route nn (US nn) |
State | State Route nn (SR nn) |
System links | |
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Ohio distinguishes between "state routes", which are all the routes on ODOT's system, and "state highways", which are the roads on the state route system which ODOT maintains, i.e. those outside municipalities,[2] with a special provision for Interstate Highways.[3] Besides the state highway network, there are various county and township road networks within the state.
![]() | This section needs expansion. You can help by adding to it. (June 2016) |
The Ohio Inter-County Highways were created on June 9, 1911, with the passage of the McGuire Bill (Senate Bill 165, 79th Ohio General Assembly).[4] Main Market Roads, the most important of the system, were defined on April 15, 1913.[5]
In 1923 the numbering system was simplified. It was altered further in 1927 in order to accommodate numbers in the United States Numbered Highway System.
In 1935 the Ohio General Assembly passed a law which added 5,000 miles of roads to the state highway system over a 12-month period.[6][7] These roads were assigned route numbers in the 500s, 600s, and 700s.[8]
In 1962 certain numbers were retired to accommodate numbers in the Interstate Highway System.
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Interstate Highways: A list of interstate highways within Ohio. |
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U.S. Routes: A list of U.S. highways within Ohio. |
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State Routes: A list of all state routes within Ohio. |
County roads: An overview of the county roads in Ohio | |
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Ohio Turnpike: A toll road carrying Interstate 90, Interstate 80, and Interstate 76. |
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