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South Carolina Highway 18

South Carolina Highway 18 marker

South Carolina Highway 18
Route information
Maintained by SCDOT
Length: 39.0 mi (62.8 km)
Existed: 1938 – present
Major junctions
West end: US 176 / SC 215 in Union
 
East end: NC 18 at the North Carolina line
Location
Counties: Union, Cherokee
Highway system
US 17 SC 19

South Carolina Highway 18 Truck
Location: Union, South Carolina
Length: 3.9 mi (6.3 km)

South Carolina Highway 18 Connector
Location: Union, South Carolina
Length: 0.10 mi (0.16 km)

South Carolina Highway 18 Connector
Location: Union, South Carolina
Length: 0.40 mi (0.64 km)

South Carolina Highway 18 Connector
Location: Gaffney, South Carolina
Length: 1.3 mi (2.1 km)

South Carolina Highway 18 marker

South Carolina Highway 18 (SC 18) is a primary state highway in the U.S. state of South Carolina. It serves to connect the cities of Union, Gaffney and Shelby, North Carolina.

SC 18 is a 39.0-mile (62.8 km) two-lane rural highway. In Gaffney, it goes through the downtown area along Fredrick Street and overlaps with the Overmountain Victory National Historic Trail.

SC 18 was established in 1938 as a renumbering of SC 111, from US 29, in Gaffney, to the North Carolina state line. In 1940, SC 18 was extended south along new primary routing to SC 9, in Pacolet. In 1942, it was extended again along new primary routing to SC 56, south of Glenn Springs. In 1960-1961, SC 18 was rerouted at Gaffney to US 176/SC 9, in Jonesville, replacing part of SC 11; its old alignment became part of SC 150. In 1989, SC 18 was extended to its current western terminus at US  176/SC 215, replacing part of US 176 and all of US 176 Bus.


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