| Designation
| Mileage
| Current Start/Finish
| Major Cities or Towns Served
|
|
144.4 (includes 1.8 mile of business spur in Florence) |
GA border (Savannah River) near North Augusta to US-76 in Florence |
North Augusta, Aiken, Columbia, Columbia, Camden, Florence |
|
221.7 |
NC border near Landrum to US 17-701 / Meeting St. (Exit 221), downtown Charleston |
Spartanburg, Clinton, Newberry, Columbia, Orangeburg, Summerville, North Charleston, Charleston |
|
91.6 |
1-26 / US 12-176-321 at exit 116 near Cayce to NC Border just south of Charlotte. |
Columbia, Chester, Rock Hill |
|
106.3 |
GA Border (Tugaloo River) near Fair Play to NC Border near Blacksburg. |
Anderson, Greenville, Greer, Spartanburg, Gaffney |
|
199.2 |
GA Border (Savannah River) north of Savannah to NC Border north of Dillon. |
Walterboro, Sumter, Florence, Dillon |
|
4.6 (includes 0.5 mile of business spur in Columbia) |
I-26 exit 108 to US 76 / SC-277 (Bull St.) in downtown Columbia. |
Columbia |
|
24.5 (to be extended to Interstate 74) |
GA border (Savannah River) to I-20 near North Augusta |
Myrtle Beach, North Myrtle Beach |
|
12.2 (includes 9.6 miles of toll road) |
I-385, Exit 31 to W. Faris Rd. in SW Greenville |
Greenville, Mauldin |
|
42.4 (includes 0.4 mile of unmarked business spur in downtown Greenville) |
I-26 exit 51 near Clinton to Academy St. downtown Greenville. |
Clinton, Laurens, Simpsonville, Mauldin, Greenville |
|
1.8 (to be extended to Interstate 20 in 2009) |
GA border (Savannah River) to I-20 near North Augusta |
North Augusta |
|
22.7 (includes 1.1 mile of business spur in Mt. Pleasant) |
Corner of US-17 (Savannah Hyw.) & SC-7 (Sam Rittenburg Blvd.) W of Charleston to SC-703 in
Mt. Pleasant |
Charleston, North Charleston, Mt. Pleasant |
|
3.1 miles (includes 0.3 mile of business spur multiplexed with US-221 in Spartanburg) |
Valley Falls Rd. to US-221 in Spartanburg |
Spartanburg |
