Ohio State Highways

The Ohio State Highway System is a network of state-maintained roads in Ohio. It includes all state routes except for those that are part of the Interstate Highway System or the United States Numbered Highway System.

The Ohio State Highway System is divided into two types of roads: state routes and state highways. State routes are all the routes on ODOT’s system, while state highways are the roads on the state route system which ODOT maintains, i.e. those outside municipalities, with a special provision for Interstate Highways.

There are currently 2,745 state routes in Ohio, with a total length of 17,500 miles. These routes are numbered from 1 to 999, with the exception of routes that are part of the Interstate Highway System or the United States Numbered Highway System.

State highways are maintained by ODOT and are designated with a “SR” prefix. There are currently 1,250 state highways in Ohio, with a total length of 12,000 miles.

The Ohio State Highway System is an important part of the transportation infrastructure in Ohio. It provides a network of roads that connect communities and businesses throughout the state. The system also plays a role in economic development and tourism.