Shortly after entering North Carolina, it expands to six lanes. I-77 goes through the city of Charlotte as a major north–south corridor, connecting Uptown Charlotte with the suburbs of Pineville, Huntersville, Cornelius, and Davidson. I-77 begins at the South Carolina state line, near Fort Mill, in concurrency with US 21. Virginia–North Carolina state line on I-77 I-77 received two extension approvals the first in 1964, continuing south from I-85 to US Route 74 (US 74), and the second in 1969 to the South Carolina state line toward Columbia. In 1958, the routing was realigned toward Cleveland instead the Detroit–Port Huron section became part of I-94. Not originally part of the Federal-Aid Highway Act of 1956, I-77 was added the following year as a route between Charlotte and Port Huron, Michigan, via Detroit, Michigan. In Surry County, it is known as the Charles M.

Younts Expressway, switching at Woodlawn Road to the Bill Lee Freeway, ending at the Mecklenburg– Iredell county line. Starting at the South Carolina state line, it is known as the General Paul R. Throughout the state, the freeway is known as the Blue Star Memorial Highway, a name shared with multiple Interstates across the state. The freeway bears several names in addition to the I-77 designation. The Interstate extends for 105.7 miles (170.1 km) and has one auxiliary route. The landscapes traversed by I-77 is a contrast of urban and rural foothills, with views of the Blue Ridge Mountains seen from a distance on its most northern section. Crossing the Piedmont, it connects with Statesville before continuing north into Virginia. In North Carolina, I-77 enters the state at Charlotte, from South Carolina. Interstate 77 ( I-77) is a part of the Interstate Highway System that runs from Columbia, South Carolina, to Cleveland, Ohio. I-77 at the Virginia line near Mount Airy I-77 / US 21 at the South Carolina line near Fort Mill, SC

15 freeway express lanes