U.S. 78 East

U.S. 78 (Heritage Highway) meets U.S. 321/S.C. 70 (Carolina Highway) just east of the CSX Railroad crossing by the Denmark AMTRAK station.
04/10/16

S.C. 70 combines with U.S. 321 for 0.68 miles through the city of Denmark between Barnwell and Orangeburg. U.S. 321 runs south to Govan and north to Norway.
04/10/16

U.S. 78 (Edward Street) continues east from Bamberg to U.S. 21 in the town of Branchville.
12/10/16

U.S. 21/78 overlap 0.20 miles north along Freedom Road. U.S. 21 continues 17 miles north to Orangeburg while U.S. 78 turns east along Dorange Road 12.8 miles to I-95 in St. George.
12/10/16

U.S. 78 (Badham Drive) parallels a Norfolk Southern Railroad line east to the town of St. George, where a folded diamond interchange joins the four lane highway with Interstate 95.
10/13/14

10/13/14

U.S. 78 converges with the east end of U.S. 178 beyond the community of Dorchester.
05/26/07

Previously U.S. 178 ended at a wye intersection with U.S. 78. Part of a 2019-21 widening project along U.S. 78 east to S.C. 27, U.S. 178 was realigned to meet U.S. 78 at a 90 degree angle.
05/26/07

U.S. 78 proceeds east from U.S. 178 across Four Hole Swamp.
05/26/07

05/26/07

Forthcoming S.C. 27 (Ridgeville Road) connects U.S. 78 with Interstate 26 at a diamond interchange 0.98 miles to the north.
05/26/07

05/26/07

U.S. 78 (W 5th Street N) meets U.S. 17 ALT (N Main Street) north of Downtown Summerville.
11/12/06

U.S. 17 ALT provides a long distance bypass of U.S. 17 around Charleston from Walterboro northeast to Moncks Corner and Georgetown.
11/12/06

U.S. 52/78 (Rivers Avenue) eastbound at Reynolds Avenue (Road 13) in North Charleston.
12/27/06

Removed by 2014, the lone shields marking the upcoming split of U.S. 52 from U.S. 78 (Rivers Avenue) east at Carner Avenue referenced a Truck Detour for U.S. 78.
12/27/06

Paralleling U.S. 78 (Rivers Avenue / King Street Extension) just to the east, U.S. 52 shifts onto Carner Avenue to Meeting Street ahead of the Windsor Place and Union Heights neighborhoods in North Charleston.
12/27/06

Road 39 Connector links adjacent Meeting Street (Road 39) with U.S. 78 (Rivers Avenue) ahead of the viaduct spanning the CSX Railroad.
12/27/06

Previously referenced as a Truck Detour for U.S. 78, Road 1382 links U.S. 78 (King Street Extension) with adjacent U.S. 52 (Meeting Street).
12/27/06

12/27/06

A trailblazer formerly marked Discher Street (Road 77) east as part of U.S. 78.
12/27/06

U.S. 78 (King Street) shifts to the west of I-26 ahead of San Souci Street in Charleston. Cypress Street (Road 114) follows in two blocks to the adjacent freeway eastbound.
12/27/06

The eastbound entrance ramp for I-26 from Cypress Street leads southward to U.S. 17 and Downtown Charleston.
12/27/06

What was the last sign referencing U.S. 78 along King Street south into Charleston was posted at Romney Street (Road 126).
12/27/06

The U.S. 78 marker at Romney and King Streets was removed after 2012.
12/27/06

King Street south at Huger Street (Road 99).
12/27/06

U.S. 78 (King Street) eastbound at Sumter Street.
12/27/06

Carolina Street west to Rutledge Avenue (Road 46) south connects U.S. 78 (King Street) with U.S. 17 (Septima P. Clark Parkway) southbound.
12/27/06

Line Street east to Meeting Street (U.S. 52) north links the east end of U.S. 78 (King Street) with U.S. 17 north across the Arthur Ravenel, Jr. Bridge.
12/27/06

U.S. 78 concludes at the intersection of King and Line Streets. An end shield was added here by 2014.
12/27/06

King Street (Road 104) extends south from U.S. 78 to next intersect Columbus Street.
12/27/06

Removed due to adjacent development in 2019, a trailblazer directed motorists from King Street south onto Spring Street (Road 3) west for U.S. 17 southbound.
12/27/06