The interchange with I-70 at Cambridge was noted on the cover of the 1969 Ohio Department of Highways (ODOT) official highway map as being the "World's Largest Interchange", covering over 300 acres (120 ha) of land.
Other major Interstate Highways I-77 connects with in Ohio are I-76, I-80 (Ohio Turnpike), and I-90. The interchange with the Ohio Turnpike was completed December 3, 2001,[1][2] providing direct access; previously, traffic had to exit at State Route 21 (SR 21) to get to the Turnpike.
I-77 is also known as the "Vietnam Veterans Memorial Highway" in Ohio,[3] and the Willow Freeway in Greater Cleveland.[4]
History
This section needs expansion with: The history of the highway that isn't related to the Michigan portion. You can help by adding to it. (November 2017)
Planned route
Originally planned to run from Port Huron, Michigan, to Charlotte, North Carolina, I-77 appeared on the original Interstate System route numbering plan in 1957. The part of I-94 from Detroit, Michigan, northeast to Port Huron was originally planned as I-77 in 1957; the current I-77 was I-79.[5] When the current I-79 was added in Pennsylvania, the I-77 designation was moved to its current route, but the I-77 in Michigan also remained in the 1958 numbering plan,[6] so the designation followed I-90 and I-75 in order to keep it continuous; the designation north of I-77's westward turn was to have been Interstate 177 (I-177). I-77 in Michigan later became part of I-94.[citation needed]
Initially, US Route 21 (US 21) traveled from Marietta to Cleveland.[7] In 1962, I-77 debuted in Akron and Canton.[8] By the end of 1971, US 21 was decommissioned in Ohio in favor of I-77 which was nearly complete.[9] It was eventually finished in 1976 with the final connection being opened in Independence.[10]
Southern end of I-76 concurrency; southern terminus of SR 8; signed as exits signed as 125A (SR 8 north) and 125B (I-76 east) northbound; no exit number northbound
^Ohio Department of Highways and Public Works (August 1, 1926). Map of Ohio Showing State Routes(PDF) (Map). 1:760,320. Columbus: Ohio Department of Highways and Public Works. OCLC5673562. Retrieved August 15, 2020.
^Ohio Department of Highways (1962). Ohio Official Highway Map(PDF) (Map). c. 1:563,200. Columbus: Ohio Department of Highways. OCLC5673562, 7444243. Retrieved August 15, 2020.
^Ohio Department of Highways (1971). Official Highway Map(PDF) (Map). 1:554,400. Columbus: Ohio Department of Highways. OCLC5673562. Retrieved August 15, 2020.