List of Interstate Highways in Ohio

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Interstate Highways of Ohio
Interstate 71 marker Interstate 275 marker Interstate 75 Business marker
Highway markers for I-71, I-275, and BL-75
A map of all the Interstate Highways in Ohio
System information
Length1,572.35 mi[2] (2,530.45 km)
FormedJune 29, 1956[1]
Highway names
InterstatesInterstate nn (I-nn)
Business Loops:Business Loop Interstate nn (BL I-nn)
System links
  • Ohio State Highway System

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), all of the Interstate Highways 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 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 2019, out of all the states, Ohio has the fifth-largest Interstate Highway System.[4] 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[]

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. Ohio had completed the construction of 522 miles (840 km) of pavement by 1960, 684 miles (1,101 km) by 1962, and 1,000 miles (1,600 km) by 1970. 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[]

Number Length (mi)[5] 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 01960-01-011960 current
I-71 248.15 399.36 I-71/I-75 at the Kentucky state line I-90 at Cleveland 01960-01-011960 current
I-73 — — I-73 at West Virginia state line I-73 at Michigan state line proposed — 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.[6]
I-74 19.47 31.33 I-74 at the Indiana state line I-75 at Cincinnati 01962-01-011962 current
I-75 211.55 340.46 I-71/I-75 at the Kentucky state line I-75 at the Michigan state line 01960-01-011960 current
I-76 81.65 131.40 I-71 near Lodi I-76 at the Pennsylvania state line 01972-01-011972 current
I-77 163.03 262.37 I-77 at the West Virginia state line I-90 at Cleveland 01964-01-011964 current
I-80 237.48 382.19 I-80/I-90 at the Indiana state line I-80 at the Pennsylvania state line 01960-01-011960 current 218 miles (351 km) of I-80 is part of the Ohio Turnpike
I-80N — — I-90/I-80 in Lorain County I-80S/SR 5 in Braceville Township 01960-01-011960 01962-01-011962 Redesignated as I-80
I-80S 81.65 131.40 I-71 near Lodi I-80S at the Pennsylvania state line 01960-01-011960 01971-01-011971 Redesignated as I-76
I-90 244.75 393.89 I-80/I-90 at the Indiana state line I-90 at the Pennsylvania state line 01960-01-011960 current 142 miles (229 km) of I-90 is part of the Ohio Turnpike
  •       Former
  •       Proposed and unbuilt

Auxiliary Interstates[]

Number Length (mi)[5] 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 01964-01-011964 current Beltway around Columbus
I-271 40.22 64.73 I-71 at Medina I-90 at Willoughby Hills 01964-01-011964 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 01962-01-011962 current Beltway around Cincinnati
I-277 4.14 6.66 I-76 at Akron I-77/US 224 at Akron 01970-01-011970 current
I-280 12.41 19.97 I-80/I-90 at Lake Township I-75 at Toledo 01959-01-011959 current First completed interstate in Ohio
I-290 — — I-90 in Cleveland I-90/I-271 in Willoughby Hills 01964-01-011964 01968-01-011968 Signed along I-271 concurrency
I-290 — — I-90 in Cleveland I-271 in Beachwood 01971-01-011971 01973-01-011973 Completed segment never opened (redesignated as I-490)
I-380 — — I-76/I-77 in Akron I-271/SR 8 in Macedonia proposed — Planned redesignation of the SR 8 freeway
I-470 6.69 10.77 I-70 at Blaine I-470 at the West Virginia state line 01976-01-011976 current
I-471 0.73 1.17 I-471 at the Kentucky state line I-71 at Cincinnati 01981-01-011981 current
I-475 20.37 32.78 I-75 at Perrysburg I-75 at Toledo 01964-01-011964 current Half beltway around Toledo
I-480 41.77 67.22 I-80 at North Ridgeville I-80 at Streetsboro 01971-01-011971 current
I-480N 1.99 3.20 I-480 at Maple Heights US-422 at Warrensville Heights 01974-01-011974 current spur freeway connecting I-480 to I-271 and US 422
I-490 2.43 3.91 I-71/I-90 at Cleveland I-77 at Cleveland 01990-01-011990 current Will extend into SR 10
I-670 10.43 16.79 I-70 at Columbus I-270 at Gahanna 02003-01-012003 current
I-675 26.53 42.70 I-75 near Miamisburg I-70 near Fairborn 01987-01-011987 current
I-680 16.43 26.44 I-76 at North Lima I-80 near Mineral Ridge 01964-01-011964 current
  •       Former
  •       Proposed and unbuilt

  • Cloverleaf interchange between I-270 and SR-161

  • A picture of the I-271 bridge over the Cuyahoga River

  • I-275 in the Sharonville neighborhood

  • The I-675 double interchange southeast of Dayton

Business routes[]

Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
I-75 BL 8.5 13.7 I-75 in Troy I-75 in Piqua — — Runs along a former segment of US 25
I-75 BL 4.5 7.2 I-75 in Sidney I-75 in Sidney — — Runs along a former segment of US 25
I-75 BL 4.4 7.1 I-75 in Findlay I-75 in Findlay — — Most if not all segments were a former segment of US 25.

See also[]

  • Flag of Ohio.svg Ohio portal
  • Blank shield.svg U.S. Roads portal

References[]

  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. ^ "Transportation Asset Management Plan (TAMP)".
  5. ^ 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.
  6. ^ 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[]

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