There are a total of 21 Interstate Highways in Ohio, including both primary and auxiliary routes. With the exception of the Ohio Turnpike (which carries portions of Interstate 76 (I-76), I-80, and

I-90 Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at . It begins in Seattle, Washington, and travels through the Pacific Northwest, Mountain West, Great Plains, Midwest, and ...

), all of the

Interstate Highways The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States. Th ...

are owned and maintained by the U.S. state of Ohio through the Ohio Department of Transportation (ODOT); however, they were all built with money from the U.S. federal government. The road miles of these 21 Interstates add up to a total of . Ohio has more route miles than this, most of which comes from I-80 running concurrently with I-90 for . The Interstate Highways in Ohio range in length from I-71, at , all the way down to

I-471 Interstate 471 (I-471) is a Interstate Highway, linking I-71 in Downtown Cincinnati, Ohio, to I-275 in Highland Heights, Kentucky. South of I-275, the expressway continues south to U.S. Route 27 (US 27) as unsigned Kentucky Route&nbs ...

, at . As of 2019, out of all the states, Ohio has the fifth-largest Interstate Highway System. Ohio also has the fifth-largest traffic volume and the third-largest quantity of truck traffic. Ohio ranks second in the nation in terms of the number of bridges for its Interstates.

History

On June 29, 1956, President Dwight D. Eisenhower signed the Federal Aid Highway Act of 1956, which called for the construction of up to of Interstate Highways. Of that, up to were to be built in Ohio. The same year, Ohio passed a law which raised the state's speed limit to , and in 1957, Ohio began the construction of its Interstate Highway allotment. By 1958, Ohio had spent more money on its Interstate Highways than either

New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...

or California. Ohio had completed the construction of of pavement by 1960, by 1962, and by 1970. By the end of 1971, Ohio had only of Interstate still to build. On September 19, 2003, Ohio finally finished the originally planned Interstate Highway System.

Primary Interstates

File:I-71 I-70 Columbus OH (crop).jpg, I-70 at the I-71 interchange near

Columbus Columbus is a Latinized version of the Italian surname "''Colombo''". It most commonly refers to: * Christopher Columbus (1451-1506), the Italian explorer * Columbus, Ohio, capital of the U.S. state of Ohio Columbus may also refer to: Places ...

File:Overview of West Lancaster.jpg, I-71 near West Lancaster and Octa File:Lockland Ohio Canal.jpg, I-75 near the

Lockland Lockland is a village in Hamilton County, Ohio, United States. The population was 3,449 at the 2010 United States Census. Lockland is located in southwest Ohio, north of Cincinnati. Its population has declined since the latter part of the 20th cent ...

Miami and Erie Canal The Miami and Erie Canal was a canal that ran from Cincinnati to Toledo, Ohio, creating a water route between the Ohio River and Lake Erie. Construction on the canal began in 1825 and was completed in 1845 at a cost to the state government of $ ...

File:Brimfield Township, Portage County, Ohio.jpg, I-76 in Portage County File:I80Cuyahoga.JPG, I-80 over the

Cuyahoga River The Cuyahoga River ( , or ) is a river located in Northeast Ohio that bisects the City of Cleveland and feeds into Lake Erie. As Cleveland emerged as a major manufacturing center, the river became heavily affected by industrial pollution, so mu ...

Auxiliary Interstates

File:I-270 at SR-161 cloverleaf 1995.jpg, Cloverleaf interchange between I-270 and SR-161 File:Interstate 80 over the Cuyahoga River.jpg, A picture of the I-271 bridge over the

File:I275 in Sharonville.jpg, I-275 in the Sharonville neighborhood File:Double interchange on I675.jpg, The I-675 double interchange southeast of Dayton

Business routes

References

External links