South Carolina Highway 18 (SC 18) is a 39.040-mile (62.829 km) primary state highway in the U.S. state of South Carolina. It serves to connect the cities of Union, Gaffney and Shelby, North Carolina.

South Carolina Highway 18 marker
South Carolina Highway 18
Route information
Maintained by SCDOT
Length39.040 mi[1][2] (62.829 km)
Existed1938[citation needed]–present
Major junctions
West end US 176 / SC 215 in Union
Major intersections
East end NC 18 at the North Carolina line
Location
CountryUnited States
StateSouth Carolina
CountiesUnion, Cherokee
Highway system
US 17 SC 19

Route description

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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.[3]

SC 18 follows the former alignment of US 176 between Jonesville and Union. US 176 bypasses Jonesville and Union along a four lane highway to the west.[citation needed]

History

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SC 18 was established in 1938 as a renumbering of SC 111, from U.S. Route 29 (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.[4] In 1942, it was extended again along new primary routing to SC 56 south of Glenn Springs.[5] 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.[6][7] 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.[8]

South Carolina Highway 18 (1922–1938)

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South Carolina Highway 18
LocationAbbeville to near Long Creek
Existed1922–1938

The first SC 18 was an original state highway, established in 1922 between SC 20 in Abbeville northwest to Anderson and then northwest to SC 17 in Westminster. The next year, it was extended north-northeast to SC 2 in Walhalla. Two or three years later, its Westminster–Walhalla segment was eliminated, and it was routed from Westminster to the Georgia state line northwest of Long Creek. Its former path was redesignated as SC 183. In 1933, its western terminus was truncated to Westminster, to an intersection with US 76 and SC 13. Its former path was redesignated as part of US 76. In 1938, SC 18 was redesignated as part of SC 28 from Abbeville to Anderson and SC 24 from Anderson to Westminster.

Antreville alternate route

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South Carolina Highway 18 Alternate
LocationAntreville
Existed1936–1938

South Carolina Highway 18 Alternate (SC 18 Alt.) was an alternate route that existed in Antreville. It was established in November 1936 between SC 184 and SC 18 (now SC 28). In 1938, it was decommissioned and redesignated as SC 28 Alt. Today, it is a secondary road.

Major intersections

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CountyLocationmi[1][2]kmDestinationsNotes
UnionUnion0.0000.000 
 
SC 215 south – Chester
 
 
US 176 east – Whitmire, Newberry, Columbia
 
 
 
 
 
 
 
  US 176 west / SC 18 Truck north / SC 215 north (Duncan Bypass) – Spartanburg, Gaffney, Airport
Western terminus of SC 18; southern terminus of SC 18 Truck; Duncan Bypass provides access to Union Medical Center
0.0700.113South Pinckney Street south (SC 215 Conn. south)Northern terminus of SC 215 Conn.; SC 215 and SC 215 Conn. share the South Pinckney Street name.
0.5700.917Union Boulevard (SC 496 west)Eastern terminus of SC 496
1.7502.816  SC 49 (Arthur Boulevard) – Union, Laurens
2.4003.862Harwood Heights west (SC 18 Conn. west) – BuffaloEastern terminus of SC 18 Conn. and Harwood Heights
3.1105.005 
 
 
 
 
  SC 18 Truck south (Connector Road / US 176 Conn. west) to US 176 – Whitmire, Rose Hill Plantation State Historic Site 
Eastern terminus of US 176 Conn.; northern terminus of SC 18 Truck; provides access to Union Medical Center and Union County Airport
7.02011.298 
 
SC 114 north (Bob Little Road) – Gaffney
Southern terminus of SC 114
9.50015.289 
 
SC 9 south (Jonesville Highway) – Chester
Western end of SC 9 concurrency
Jonesville10.56016.995 
 
SC 9 north (Main Street) – Spartanburg
Eastern end of SC 9 concurrency
10.98017.671Church Street west (SC 9 Conn. south)Northern terminus of SC 9 Conn.; eastern terminus of Church Street
14.57023.448 
 
SC 114 south (Bobby Faucette Road) – Union
Northern terminus of SC 114
Cherokee18.09029.113 
 
SC 211 east (Gowdeysville Road) – Hickory Grove, York
Western end of SC 211 concurrency
Asbury18.79030.240 
 
SC 211 west (Asbury Road)
Eastern end of SC 211 concurrency
Gaffney28.74046.253 
 
SC 105 south (Wilkinsville Highway) – Hickory Grove
Western end of SC 105 concurrency
29.06046.768 
 
SC 105 north (Union Street)
Eastern end of SC 105 concurrency
30.22048.634  
 
SC 150 (Limestone Street) / SC 11 begins
Western end of SC 11 concurrency
30.41048.940  US 29 (Granard Street) – Shelby, Gastonia, Spartanburg, Greenville
30.58049.214 
 
SC 11 south (West Fredrick Street) – Chesnee, Spartanburg
Eastern end of SC 11 concurrency
30.65049.326  SC 150 (Holland Street south / Providence Road north)
32.50052.304 
 
 
Pleasant School Road to I-85 south – Spartanburg
33.82054.428 
 
SC 329 south (Victory Trail Road) – Blacksburg
Northern terminus of SC 329
33.880–
34.007
54.525–
54.729
  I-85 / Wilcox Avenue – Spartanburg, CharlotteI-85 exit 96; access to I-85 south is via Wilcox Avenue.
39.04062.829 
 
NC 18 north – Shelby
Continuation beyond North Carolina state line
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Special routes

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Union truck route

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South Carolina Highway 18 Truck
LocationUnion, South Carolina
Length3.980 mi[9][10] (6.405 km)

South Carolina Highway 18 Truck (SC 18 Truck) is a 3.980 miles (6.405 km) truck route that travels along Duncan Bypass, in concurrency with US 176/SC 215, then reconnects with SC 18 at Connector Road.[11]

Union connector route

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South Carolina Highway 18 Connector
LocationUnion, South Carolina
Length0.520 mi[12] (837 m)

South Carolina Highway 18 Connector (SC 18 Conn) is a 0.520-mile (0.837 km) hidden designation between SC 18 and U.S. Route 176 (US 176)/SC 215, via Harwood Heights. It serves as a direct route to Buffalo from downtown Union.[13]

Gaffney connector route

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South Carolina Highway 18 Connector
LocationGaffney, South Carolina
Length2.310 mi[14] (3.718 km)

South Carolina Highway 18 Connector (SC 18 Conn.) is the hidden designation of Logan Street, between SC 18 and U.S. Route 29 (US 29). However, this route is signed as mainline SC 18 throughout, despite county and state maps indicating its official routing is along Limestone Street.[15]

Gaffney alternate route 1

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South Carolina Highway 18 Alternate
LocationGaffney
Existed1938–1940

South Carolina Highway 18 Alternate (SC 18 Alt.) was an alternate route in Gaffney. It was established in 1938 as a redesignation of SC 111 Alt. between U.S. Route 29 (US 29) and SC 18. In 1940, it was decommissioned and became part of the mainline route.

Gaffney alternate route 2

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South Carolina Highway 18 Alternate
LocationGaffney
Existed1940–1947

South Carolina Highway 18 Alternate (SC 18 Alt.) was an alternate route in Gaffney. It was established in 1940 as a redesignation of the SC 18 mainline between Limestone Street and U.S. Route 29 (US 29). In 1947, it was decommissioned and became part of SC 18 Conn. Today, it is part of SC 18 again.

See also

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References

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  1. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved November 28, 2020.
  2. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved November 28, 2020.
  3. ^ "South Carolina Highway 18" (Map). Google Maps. Retrieved August 16, 2015.
  4. ^ General Highway Map, Cherokee County, South Carolina (PDF) (Map). Cartography by SCDOT. South Carolina Department of Transportation. 1940. Retrieved August 17, 2015.
  5. ^ General Highway Map, Spartanburg County, South Carolina (PDF) (Map). Cartography by SCDOT. South Carolina Department of Transportation. 1957. Retrieved August 17, 2015.
  6. ^ General Highway Map, Cherokee County, South Carolina (PDF) (Map). Cartography by SCDOT. South Carolina Department of Transportation. 1963. Retrieved August 17, 2015.
  7. ^ General Highway Map, Union County, South Carolina (PDF) (Map). Cartography by SCDOT. South Carolina Department of Transportation. 1963. Retrieved August 17, 2015.
  8. ^ General Highway Map, Union County, South Carolina (PDF) (Map). Cartography by SCDOT. South Carolina Department of Transportation. 1994. Retrieved August 17, 2015.
  9. ^ "Highway Logmile Report". South Carolina Department of Transportation. Retrieved November 28, 2020.
  10. ^ "Highway Logmile Report". South Carolina Department of Transportation. Retrieved November 28, 2020.
  11. ^ "South Carolina Highway 18 Truck (Union)" (Map). Google Maps. Retrieved August 16, 2015.
  12. ^ "Highway Logmile Report". South Carolina Department of Transportation. Retrieved November 17, 2020.
  13. ^ General Highway System, City of Union, Union County (PDF) (Map). South Carolina Department of Transportation. October 2010. Retrieved August 22, 2015.
  14. ^ "Highway Logmile Report". South Carolina Department of Transportation. Retrieved November 17, 2020.
  15. ^ General Highway System, Town of Gaffney, Cherokee County (PDF) (Map). South Carolina Department of Transportation. July 2009. Retrieved August 22, 2015.
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