List of Unused Highways in Michigan - United States - South Carolina

South Carolina

Andrews

• A shift in the routing of Morgan Ave/SC 41 Business during the construction of the US 521 Bypass left an unused portion of roadway near the location of the current route. The signs signifying a sharper curve can still be seen.

Charleston

• Ramp stubs exist where U.S. Route 17 formerly connected to the southern end of Interstate 26. The ramps connected to the John P. Grace Memorial Bridge and the Silas N. Pearman Bridge over the Cooper River. When the bridges were replaced by the Arthur Ravenel Jr. Bridge in 2005, the old roadways were demolished, and a new interchange was built north of the terminus of I-26.

• At the Southern Terminus of the Mark Clark Expressway and the Southern Terminus of the James Island Connector Expressway, there are stubs of grading and/or overpass. The two termini will be linked to form an extended Mark Clark Expressway.

Columbia

• The South Carolina State Route 277/I. DeQuincey Newman Freeway was originally planned to continue through downtown to Interstate 126 and be numbered Interstate 277. Following its completion as far as South Carolina State Route 16/Sunset Drive, construction was put on hold due to neighborhood opposition along its proposed routing. The extension was eventually cancelled in the 1980s, and the Bull Street spur was completed in the 1990s, which was supposed to be just an exit. The part of the right-of-way already acquired by South Carolina Department of Transportation was returned to the city in 2001.

Georgetown

• The former Lafayette Bridge can be found at . When the new bridges were built in the 1960s, the old bridges were decommissioned. The Lafayette Bridge was left standing for use as a fishing pier. However, the roads that carried US 17 to the bridges can still be seen on all sides of the Black and PeeDee Rivers.

• The stubs of the bridge that once carried US17/Frasier Street across the Sampit River can be found at .

Myrtle Beach

• The Carolina Bays Parkway southern terminus at SC 544 has a graded area that extends past the cloverleaf interchange. This will become part of an extension to US 17 via SC 707 in Socastee. The northern terminus at SC 9, though it does not have a stub, will eventually be extended to the NC state line. The entire route will eventually become part of I-74.

• During the construction of a SPUI on US 17 at the back gate of the former Myrtle Beach Air Force Base, the mainlines of US 17 will become stubs as a ramp is constructed.

• A piece of stub grading which was once a road that connected US 17 to the Myrtle Beach International Airport can be found at . The road was removed during the construction of the Grand Strand Mall and is currently used as a barrier between two retention ponds.

Santee

• The U.S. Route 301/U.S. Route 15 bridge over Lake Marion is closed to traffic because of unstable foundations and is now used as a fishing pier.