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The original highway numbering system for North Carolina was established in the 1920s. 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 ]
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 ...
In 1918, Wisconsin became the first state to number its highways in the field followed by Michigan the following year. [1] In 1926 the American Association of State Highway Officials (AASHO) established and numbered interstate routes (United States Numbered Highways), selecting the best roads in each state that could be connected to provide a national network of federal highways.
US 158/NC 12 in Nags Head: 1932: current 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
Since the policy on numbering and designating US Highways was updated in 1991, AASHTO has been in the process of eliminating all intrastate U.S. Highways under 300 miles (480 km) in length, "as rapidly as the State Highway Department and the Standing Committee on Highways of the American Association of State Highway and Transportation Officials ...
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 ...
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In 1925, the Joint Board on Interstate Highways, recommended by the American Association of State Highway Officials (AASHO), worked to form a national numbering system to rationalize the roads. After several meetings, a final report was approved by the U.S. Department of Agriculture in November 1925.