Interstate 20 in South Carolina

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Interstate 20 marker

Interstate 20
J. Strom Thurmond Freeway
Route information
Maintained by SCDOT
Length:141.51 mi[1] (227.74 km)
Existed:1964 – present
Major junctions
West end: I-20 at Georgia state line
  I-520 in North Augusta
I-26 / US 76 in Columbia
I-77 in Columbia
I-95 near Florence
East end: I-20 Bus. in Florence
Location
Counties:Aiken, Lexington, Richland, Kershaw, Lee, Darlington, Florence
Highway system
SC 20US 21
 
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Interstate 20 marker

Interstate 20
J. Strom Thurmond Freeway
Route information
Maintained by SCDOT
Length:141.51 mi[1] (227.74 km)
Existed:1964 – present
Major junctions
West end: I-20 at Georgia state line
  I-520 in North Augusta
I-26 / US 76 in Columbia
I-77 in Columbia
I-95 near Florence
East end: I-20 Bus. in Florence
Location
Counties:Aiken, Lexington, Richland, Kershaw, Lee, Darlington, Florence
Highway system
SC 20US 21

Interstate 20 is a major thoroughfare cutting across the state of South Carolina, linking the state with important transportation and business hubs to the north, west and south, including Atlanta, Georgia, Charlotte, North Carolina (via Interstate 77), Savannah, Georgia (via Interstate 95) and Washington, D.C. (via Interstate 95).

Route description[edit]

Interstate 20 enters the Palmetto State after crossing the Savannah River from Augusta, Georgia. Known as the J. Strom Thurmond Freeway, the highway heads northeastward, bypassing Aiken and Lexington before reaching the state capital of Columbia. It was constructed in various stages beginning in late 1963, with the final section between SC-340 and the Business Spur opening in August 1975.

At Columbia, I-20 crosses the Saluda and Broad rivers and travels through the northern part of the city and turns eastward, bypassing Fort Jackson and Camden before reaching Florence. It is at Florence where I-20 sees its eastern terminus at Interstate 95. However, for about two miles (3 km), the highway continues to downtown Florence as Business Spur 20.

History[edit]

Approaching the eastern end of I-20 on I-95

Proposed Extension of Interstate 20[edit]

In 2003, The North Carolina Department of Transportation proposed extending I-20 eastward from Florence to Wilmington at the behest of North Carolina Governor Mike Easley and his 'Strategic Transportation Plan' for the southeast portion of the state. The proposed route would follow U.S. 76 east from Florence to Whiteville, North Carolina, then parallel U.S. 74/U.S. 76 into Wilmington. Part of this route is already designated the future Interstate 74. As part of the 2005 SAFETEA-LU transportation legislation, North Carolina received $5 million for a feasibility study for this extension.

While this extension has considerable support among towns in southeastern North Carolina, the South Carolina DOT has stated that they have no interest in upgrading their portion of U.S. 76 to an interstate. This is likely due, in no small part, to encourage eastbound vacationers to travel to Myrtle Beach, South Carolina rather than Wilmington and that they are concentrating their efforts on plans to build Interstate 73 that will terminate near Myrtle Beach. Officials in Wilmington in the Fall of 2009 responded with another idea, route I-20 north along I-95 to I-74 and then be routed or co-routed with I-74/US 74 to Wilmington. State and federal officials have not officially responded to this proposal.[2]

Auxiliary routes in South Carolina[edit]

InterstateCityTypeNotes
Business Spur 20.svgInterstate 20 BusinessFlorenceBusiness spurBoulevard grade throughout
I-520.svgInterstate 520North Augusta and Augusta, GeorgiaPartial beltwayOriginally a spur, it is split between Georgia and South Carolina

Exit list[edit]

CountyLocationMilekmExitDestinationsNotes
AikenNorth Augusta0.000.00 I-20 west – AtlantaContinuation into Georgia
1 SC 230 – North Augusta, Colliers
5 US 25 / SC 121 – Edgefield, Johnston
6 I-520 west – North Augusta, Augusta
 11Bettis Academy Road – Graniteville
Aiken18 SC 19 – Aiken, Johnston, Edgefield
22 US 1 – Aiken, Ridge Spring
 29Wire Road
 33 SC 39 – Wagener, Monetta, Ridge Spring
Lexington 39 US 178 – Pelion, Batesburg-Leesville
 44Road 34 – Gilbert
 51Longs Pond Road
Lexington55 SC 6 – Red Bank, LexingtonSigned as exits 55A (east) and 55B (west) westbound
58 US 1 – Lexington, West ColumbiaAccess to the Columbia Airport.
61 US 378 – West Columbia, Lexington
RichlandColumbia63Bush River Road
64 I-26 / US 76 – Spartanburg, CharlestonSigned as exits 64A (east) and 64B (west)
65 US 176 (Broad River Road) – Irmo, Columbia
68 SC 215 (Monticello Road) – Jenkinsville
70 US 321 (Fairfield Road) – Winnsboro, Columbia
71 US 21 (North Main Street) – Blythewood, West Columbia
72 SC 555 (Farrow Road)
73 SC 277 – Columbia, CharleswoodSigned as exits 73A (south) and 73B (north); 73B signed as "To I-77 North"
74 US 1 (Two Notch Road) – Dentsville, Elgin
76 I-77 – Charleston, CharlotteSigned as exit 76A westbound; Eastbound access only to I-77 Southbound
76Alpine RoadI-77 Northbound access from I-20 Eastbound; Signed as exit 76B westbound
 80Clemson Road
 82Spears Creek Church Road – Pontiac
Kershaw 87White Pond Road – Elgin
Camden92 US 601 – Lugoff, Camden, Eastover
98 US 521 – Camden, Sumter, Rembert
 101Road 329 – Antioch
Lee 108Jamestown Road – Manville, Antioch
Bishopville116 US 15 – Sumter, Bishopville, Hartsville
120 SC 341 – Bishopville, Lynchburg, Elliott
 123Road 22 – Lamar, AshlandAccess to the Lee State Park.
Darlington 131 US 401 to SC 403 – Timmonsville, Darlington, Hartsville, Sumter
 137 SC 340 – Darlington, Timmonsville
FlorenceFlorence141 I-95Fayetteville, SavannahSigned as exits 141A (north) and 141B (south)
141.51227.74 I-20 Bus. east – FlorenceContinuation beyond I-95
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Interstate 20 Business[edit]

Interstate 20 Business
Location:Florence, South Carolina
Length:2.00 mi[3] (3.22 km)
Existed:1970–present

Interstate 20 Business (BS 20) is a 2.0-mile (3.2 km) four-lane boulevard grade business spur of I-20 along David H. McLeod Boulevard, between Interstate 95 and Palmetto Street (US 76). Construction began by 1969, completed in 1970, at has remained unchanged since inception.

Junction list[edit]

The entire route is in Florence, Florence County.

Mile[3]kmDestinationsNotes
0.000.00 I-20 west / I-95 – Columbia, Fayetteville, SavannahContinuation as I-20
2.003.22 US 76 (Palmetto Street) – Myrtle Beach, TimmonsvilleTo Francis Marion University
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


See also[edit]


References[edit]

External links[edit]

Route map: Google / Bing


Interstate 20
Previous state:
Georgia
South CarolinaNext state:
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