Interstate 20 in South Carolina
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| J. Strom Thurmond Freeway | ||||
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| 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 |
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 I-520 in North Augusta  I-26 / US 76 in Columbia I-77 in Columbia I-95 near Florence |
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| East end: |  I-20 Bus. in Florence |
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| Location | ||||
| Counties: | Aiken, Lexington, Richland, Kershaw, Lee, Darlington, Florence | |||
| Highway system | ||||
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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
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
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Proposed Extension of Interstate 20
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
| Interstate | City | Type | Notes | |
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Interstate 20 Business | Florence | Business spur | Boulevard grade throughout |
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Interstate 520 | North Augusta and Augusta, Georgia | Partial beltway | Originally a spur, it is split between Georiga and South Carolina |
Exit list
| County | Location | Mile | km | Exit | Destinations | Notes |
|---|---|---|---|---|---|---|
| Aiken |
North Augusta | 0.00 | 0.00 | I-20 west – Atlanta |
Continuation into Georgia | |
| 1 |  SC 230 – North Augusta, Colliers |
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| 5 |   US 25 / SC 121 – Edgefield, Johnston |
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| 6 | I-520 west – North Augusta, Augusta |
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| 11 | Bettis Academy Road – Graniteville | |||||
| Aiken | 18 |  SC 19 – Aiken, Johnston, Edgefield |
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| 22 |  US 1 – Aiken, Ridge Spring |
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| 29 | Wire Road | |||||
| 33 |  SC 39 – Wagener, Monetta, Ridge Spring |
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| Lexington |
39 |  US 178 – Pelion, Batesburg-Leesville |
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| 44 | Road 34 – Gilbert | |||||
| 51 | Longs Pond Road | |||||
| Lexington | 55 |  SC 6 – Red Bank, Lexington |
Signed as exits 55A (east) and 55B (west) westbound | |||
| 58 | US 1 – Lexington, West Columbia |
Access to the Columbia Airport. | ||||
| 61 |  US 378 – West Columbia, Lexington |
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| Richland |
Columbia | 63 | Bush River Road | |||
| 64 | I-26 / US 76 – Spartanburg, Charleston |
Signed as exits 64A (east) and 64B (west) | ||||
| 65 |  US 176 (Broad River Rd.) – Irmo, Columbia |
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| 68 |  SC 215 (Monticello Rd.) – Jenkinsville |
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| 70 |  US 321 (Fairfield Rd.) – Winnsboro, Columbia |
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| 71 |  US 21 (N. Main St.) – Blythewood, West Columbia |
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| 72 |  SC 555 (Farrow Rd.) |
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| 73 |  SC 277 – Columbia, Charleswood |
Signed as exits 73A (south) and 73B (north); 73B signed as "To I-77 North" | ||||
| 74 | US 1 (Two Notch Rd.) – Dentsville, Elgin |
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| 76 | I-77 – Charleston, Charlotte |
Westbound signed as exit 76A; Eastbound access only to I-77 Southbound | ||||
| 76 | Alpine Road | I-77 Northbound access from I-20 Eastbound; Westbound signed as exit 76B | ||||
| 80 | Clemson Road | |||||
| 82 | Spears Creek Church Road – Pontiac | |||||
| Kershaw |
87 | White Pond Road – Elgin | ||||
| Camden | 92 |  US 601 – Lugoff, Camden, Eastover |
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| 98 |  US 521 – Camden, Sumter, Rembert |
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| 101 | Road 329 – Antioch | |||||
| Lee |
108 | Jamestown Road – Manville, Antioch | ||||
| Bishopville | 116 |  US 15 – Sumter, Bishopville, Hartsville |
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| 120 |  SC 341 – Bishopville, Lynchburg, Elliott |
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| 123 | Road 22 – Lamar, Ashland | Access to the Lee State Park. | ||||
| Darlington |
131 |   US 401 to SC 403 – Timmonsville, Darlington, Hartsville, Sumter |
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| 137 |  SC 340 – Darlington, Timmonsville |
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| Florence |
Florence | 141 | I-95 – Manning, Dillon |
Signed as exits 141A (north) and 141B (south) | ||
| 141.51 | 227.74 |  I-20 Bus. east – Florence |
Continuation beyond I-95 | |||
Interstate 20 Business
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| 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
The entire route is in Florence, Florence County.
| Mile[3] | km | Destinations | Notes | |||||
|---|---|---|---|---|---|---|---|---|
| 0.00 | 0.00 |  I-20 west / I-95 – Columbia, Fayetteville, Savannah |
Continuation as I-20 | |||||
| 2.00 | 3.22 | US 76 (Palmetto Street) – Myrtle Beach, Timmonsville |
To Francis Marion University | |||||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | ||||||||
References
- ^ "Route Log and Finder List — Interstate System: Table 1". FHWA. Retrieved 2007-09-26.
- ^ My Reporter Column Question on I-20 Going to Wilmington, accessed 10/8/09
- ^ a b Google Inc. Google Maps – Business Spur 20 (Map). Cartography by Google, Inc. https://maps.google.com/maps?saddr=I-20+BUS+E&daddr=David+H+McLeod+Blvd&hl=en&ll=34.188447,-79.825673&spn=0.029713,0.055747&sll=34.190754,-79.8402&sspn=0.014856,0.027874&geocode=FaO7CQIdALI9-w%3BFSuoCQIdhTQ--w&mra=dme&mrsp=0&sz=16&t=p&z=15. Retrieved May 19, 2013.
External links
Media related to Interstate 20 in South Carolina at Wikimedia Commons- Mapmikey's South Carolina Highways Page: I-20
- South Carolina @ Southeast Roads.com - Interstate 20
- I-20 in NC discussion on I-74 in North Carolina Progress Page, accessed October 4, 2005.
Media related to | Interstate 20 |
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| Previous state: Georgia |
South Carolina | Next state: Terminus |
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