Established in 1959, Interstate 85 originally ran along the newly widened four-lane section of US 29, from Fort Prince Boulevard (SC 129, exit 68) to the North Carolina state line. Construction also started around that time extending Interstate 85 from Fort Prince Boulevard to Interstate 185, south of Greenville. In 1961, construction started on another section, from Georgia state line to US 29, near Piedmont. In 1962, US 29 was removed from the entire existing section of Interstate 85 at that time.