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There are 22 Interstate Highways—9 primary and 13 auxiliary—that exist entirely or partially in the U.S. state of North Carolina.As of January 2020, the state had a total of 1,410 miles (2,270 km) of Interstates and 70 miles (110 km) of Interstate business routes, all maintained by the North Carolina Department of Transportation (NCDOT).
Major routes were multiples of 10, with 10, 20, and 90 running east–west, 30, 40, 50, 70, and 80 running north–south, and 60 running as a diagonal route. [6] These cross-state routes were used as a basis for numbering the two-digit roads that served as the major city-city connectors.
Unfinished in North Carolina; North Carolina only; planned in one more: Virginia Associated route: I-587 Shortest Interstate highway in contiguous United States I-87: 333.49: 536.70 I-278 in New York City: A-15 at Canadian border in Champlain, New York: 1957: current New York only Associated routes: I-287, I-587, I-787: I-88: 140.60: 226.27
Longest numbered route in North Carolina. US 70: 488.0: 785.4 US 25/US 70/SR 9 at the TN state line: School Drive in Atlantic: 1926: current US 74: 451.8: 727.1 US 64/US 74/SR 40 at the TN state line: Turnaround in Wrightsville Beach: 1926: current US 76: 80.4: 129.4 US 76 at the SC state line: Water Street in Wrightsville Beach: 1934
When originally established in the 1920s, the state highway system was highly organized: two-digit routes ending in "0" were major cross-state routes, other two digit routes were numbered as spurs off of the main route (that is, Highway 54 would have been a spur off of Highway 50) and lesser important routes were given three digit numbers by appending an extra "ones" digit to the two digit ...
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Interstate 81 offers a bypass to I-40. From Knoxville, travelers can head north on I-81, which connects with Interstate 26, providing an alternate route to Asheville and other areas in North Carolina.
The purpose of this WikiProject is to create, standardize, and improve articles about the state highway system in North Carolina.This project will encompass all the North Carolina State Routes (on diamond-shaped shields), the U.S. Routes and Interstates that are predominantly North Carolinian (like US 158) and any other unusual routes in the state (like Charlotte 4); important named freeways ...