US 1 Business #1: Born in 1960 as a renumbering of US 1-A through Sanford. Ran on Carthage St and Hawkins Ave. This was the historical route of original NC 50.
Between 1976-78, US 1 BUsiness was rerouted southward leaving Sanford to follow NC 42 back over to mainline US 1. The remaining Carthage Rd southward is now SR 1237.
US 1-A through Sanford
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US 1-A becomes US 1 Bus
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US 1 Bus rerouted to follow NC 42
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US 1 Business #2: Born in 1960 as a renumbering of US 1-A through Gill and Henderson. US 1 Business uses Raleigh Rd and Garnett St and was the route of original NC 50.
US 1 Business actually loops east of US 1 to go through Gill.
US 1-A through Henderson
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US 1 Business replaces US 1-A
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US 1 Business #4: The most recent active US 1 BUsiness to be created was born in June 2005 when US 1 was sent to the east of Vass and Cameron. This too was part of original NC 50.
US 1 through Vass-Cameron
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US 1 bypasses Vass-Cameron
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There is one US 1 Business segment (#3) that has come and gone. Created in 1963, US 1 Business for Raleigh was born when US 1 was placed on the new Beltline. US 1 Business followed Hillsborough St into the city center, then McDowell/Dawson (one-way pairs), Downtown Blvd and North Blvd (now Capital Blvd) northeast back out to the Beltline.
US 1 Business was decommissioned in 1975. Hillsborough St became secondary (why not an extended NC 54?) and the rest remained US 401.
Only the Hillsborough St section was part of original NC 50.
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US 1 Business in Raleigh
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There is the possibility of a US 1 Business existing 1960-61 through Southern Pines but I don't have any resources to confirm one way or another.
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