Interstate 77

Interstate 77
Interstate 77
	I-77 highlighted in red
Route information
Length	610.10 mi (981.86 km)
NHS	Entire route
Major junctions
South end	I-26 in Cayce, SC
	I-20 in Columbia, SC; I-85 in Charlotte, NC; I-40 in Statesville, NC; I-74 near Mt. Airy, NC; I-81 between Fort Chiswell and Wytheville, VA; I-64 between Beckley and Charleston, WV; I-79 near Charleston, WV; I-70 in Cambridge, OH; I-76 / SR 8 in Akron, OH; I-80 / Ohio Turnpike in Richfield, OH;
North end	I-90 in Cleveland, OH
Location
Country	United States
States	South Carolina, North Carolina, Virginia, West Virginia, Ohio
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future;

Interstate 77 (I-77) is a north–south Interstate Highway in the Eastern United States. It traverses diverse terrain, from the mountainous state of West Virginia to the rolling farmlands of North Carolina and Ohio. It largely supplants the old U.S. Route 21 (US 21) between Cleveland, Ohio, and Columbia, South Carolina, as an important north–south corridor through the middle Appalachian Mountains. The southern terminus of I-77 is in Cayce, South Carolina, in Lexington County at the junction with I-26.^[2] The northern terminus is in Cleveland at the junction with I-90. Other major cities that I-77 connects to include Columbia, South Carolina; Charlotte, North Carolina; Charleston, West Virginia; and Akron, Ohio. The East River Mountain Tunnel, connecting Virginia and West Virginia, is one of only two instances in the U.S. where a mountain road tunnel crosses a state line. The other is the Cumberland Gap Tunnel, connecting Tennessee and Kentucky.^[3] I-77 is a snowbird route to the Southern U.S. for those traveling from the Great Lakes region.^[4]

^ Starks, Edward (January 27, 2022). "Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways". FHWA Route Log and Finder List. Federal Highway Administration. Archived from the original on September 20, 2023. Retrieved August 8, 2023.
^ Cayce, SC (PDF) (Map). City of Cayce. Archived (PDF) from the original on July 7, 2022. Retrieved January 28, 2024.
^ AppalachianMagazine (December 18, 2015). "Virginia & West Virginia's Shared Tunnel". Appalachian Magazine. Archived from the original on July 13, 2018. Retrieved July 13, 2018.
^ Wighton, Doug (December 29, 2014). "Road trip: the alternate route to Florida". Toronto Star. ISSN 0319-0781. OCLC 137342540. Archived from the original on March 20, 2018. Retrieved March 20, 2018.