There are a total of 21 Interstate Highways in Ohio
, including both primary and auxiliary routes. All of the Interstates are owned and maintained by the state
; 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 Interstate 80
with Interstate 90
for . The Interstate Highways in Ohio range in length from Interstate 90, at , all the way down to Interstate 471
, at .
As of 2006, out of all the states, Ohio has the fourth-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 Interstate Highway System.
On June 29, 1956, President Dwight D. Eisenhower
signed the Federal Aid Highway Act
, 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
. In 1960, Ohio had completed the construction of of pavement; in 1962, Ohio had... Read More