List of Interstate Highways in Ohio

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Interstate Highways of Ohio
Interstate 71 markerInterstate 275 markerInterstate 75 Business marker
Highway markers for I-71, I-275, and BL-75
A map of all the Interstate Highways in Ohio
System information
Length: 1,572.35 mi[2] (2,530.45 km)
Formed: June 29, 1956[1]
Highway names
Interstates: Interstate nn (I-nn)
Business Loops: Business Loop Interstate nn (BL I-nn)
System links

There are a total of 21 Interstate Highways in Ohio, including both primary and auxiliary routes. All of the Interstate Highwayss 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.[3] The road miles of these 21 Interstates add up to a total of 1,572.35 miles (2,530.45 km). Ohio has more route miles than this, most of which comes from Interstate 80 (I-80) running concurrently with I-90 for 142.80 miles (229.81 km). The Interstate Highways in Ohio range in length from I-71, at 248.15 miles (399.36 km), all the way down to I-471, at 0.73 miles (1.17 km).[2]

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 Interstates.[1]

History[edit]

On June 29, 1956, President Dwight D. Eisenhower signed the Federal Aid Highway Act of 1956, which called for the construction of up to 41,000 miles (66,000 km) of Interstate Highways. Of that, up to 1,500 miles (2,400 km) were to be built in Ohio. The same year, Ohio passed a law which raised the state's speed limit to 60 mph (97 km/h), 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 or California. In 1960, Ohio had completed the construction of 522 miles (840 km) of pavement; in 1962, Ohio had completed the construction of 684 miles (1,101 km) of pavement; and in 1970, Ohio had completed the construction of 1,000 miles (1,600 km) of pavement. By the end of 1971, Ohio had only 167 miles (269 km) of Interstate still to build. On September 19, 2003, Ohio finally finished the originally planned Interstate Highway System.[1]

Primary Interstates[edit]

Number Length (mi)[4] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
I-70 225.60 363.07 I-70 at the Indiana state line I-70 at the West Virginia state line 1960 current
I-71 248.15 399.36 I-71/I-75 at the Kentucky state line I-90 at Cleveland 1960 current
I-74 19.47 31.33 I-74 at the Indiana state line I-75 at Cincinnati 1962 current Will extend into West Virginia
I-75 211.55 340.46 I-71/I-75 at the Kentucky state line I-75 at the Michigan state line 1960 current
I-76 81.65 131.40 I-71 near Lodi I-76 at the Pennsylvania state line 1972 current
I-77 163.03 262.37 I-77 at the West Virginia state line I-90 at Cleveland 1964 current
I-80 237.48 382.19 I-80/I-90 at the Indiana state line I-80 at the Pennsylvania state line 1960 current 218 miles (351 km) of I-80 is part of the Ohio Turnpike
I-90 244.75 393.89 I-80/I-90 at the Indiana state line I-90 at the Pennsylvania state line 1960 current

Auxiliary Interstates[edit]

Number Length (mi)[4] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
I-270 54.97 88.47 I-71 at Grove City US 23 at Columbus 1964 current Beltway around Columbus
I-271 46.06 74.13 I-71 at Medina I-90 at Willoughby Hills 1964 current I-271 is east of Cleveland
I-275 56.041 90.189 I-275 at the Indiana state line I-275 at the Kentucky state line 1962 current Beltway around Cincinnati
I-277 4.14 6.66 I-76 at Akron I-77/US 224 at Akron 1970 current
I-280 12.41 19.97 I-80/I-90 at Lake Township I-75 at Toledo 1959 current First completed interstate in Ohio
I-290 I-90 in Cleveland I-90/I-271 in Willoughby Hills 1964 1968 Signed along I-271 concurrency
I-290 I-90 in Cleveland I-271 in Beachwood 1971 1973 Completed segment never opened (redesignated as I-490)
I-470 6.69 10.77 I-70 at Blaine I-470 at the West Virginia state line 1976 current
I-471 0.73 1.17 I-471 at the Kentucky state line I-71 at Cincinnati 1981 current
I-475 20.37 32.78 I-75 at Perrysburg I-75 at Toledo 1964 current Half beltway around Toledo
I-480 41.77 67.22 I-80 at North Ridgeville I-80 at Streetsboro 1971 current
I-490 2.43 3.91 I-71/I-90 at Cleveland I-77 at Cleveland 1990 current Will extend into SR 10
I-670 10.43 16.79 I-70 at Columbus I-270 at Gahanna 2003 current
I-675 26.53 42.70 I-75 near Miamisburg I-70 near Fairborn 1987 current
I-680 16.43 26.44 I-76 at North Lima I-80 near Mineral Ridge 1964 current

Suffixed Interstates[edit]

Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
I-80N I-90/I-80 in Lorain County I-80S/SR 5 in Braceville Township 1960 1962 Redesignated as I-80
I-80S 81.65 131.40 I-71 near Lodi I-80S at the Pennsylvania state line 1960 1971 Redesginated as I-76
I-480N 1.99 3.20 I-480 in Maple Heights US 422 in Warrensville Heights 1974 current Spur of I-480

Proposed Interstates[edit]

Number Southern or western terminus Northern or eastern terminus Notes
I-73 I-73 at West Virginia state line I-73 at Michigan state line Proposed highway that would enter from West Virginia along U.S. Route 52 to Portsmouth, then use US 23 and other highways to Toledo before crossing into Michigan.[5]
I-380 I-76/I-77 in Akron I-271/SR 8 in Macedonia Planned redesignation of the SR 8 freeway

Business routes[edit]

Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
I‑75 Bus.
I‑75 Bus.
I‑75 Bus.
  •       Former

See also[edit]

References[edit]

  1. ^ a b c Ohio Department of Transportation (n.d.). "Ohio's Timeline". Ohio Department of Transportation. Retrieved January 20, 2011. 
  2. ^ a b Adderly, Kevin (January 27, 2016). "Table 3: Interstate Routes in Each of the 50 States, District of Columbia, and Puerto Rico". Route Log and Finder List. Federal Highway Administration. Retrieved June 7, 2016. 
  3. ^ Federal Highway Administration (November 18, 2015). "Frequently Asked Questions". Celebrating the Eisenhower Interstate Highway System. Federal Highway Administration. Retrieved June 7, 2016. 
  4. ^ a b Adderly, Kevin (January 27, 2016). "Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2015". Route Log and Finder List. Federan Highway Administration. Retrieved June 7, 2016. 
  5. ^ Staff (December 18, 1991). "Intermodal Surface Transportation Efficiency Act of 1991". U.S. Congress. Retrieved September 28, 2010. §1105(c)(5) I-73/74 North–South Corridor from Charleston, South Carolina, through Winston-Salem, North Carolina, to Portsmouth, Ohio, to Cincinnati, Ohio, and Detroit, Michigan. 

External links[edit]