U.S. Route 78 in South Carolina

This article is about the section of U.S. Route 78 in South Carolina. For the entire route, see U.S. Route 78.

U.S. Highway 78 marker U.S. Highway 78
US 78 highlighted in red
Route information
Maintained by SCDOT
Length	142.207 mi (228.860 km)
Existed	1927–present
Major junctions
West end	File:US 1.svgFile:US 25.svgFile:US 78.svgFile:US 278.svgFile:Georgia 10.svgFile:Georgia 121.svg US 1 / US 25 / US 78 / US 278 / SR 10 / SR 121 at the Georgia line near North Augusta
Major intersections	File:US 25.svgFile:South Carolina 121.svg US 25 / SC 121 in North Augusta File:I-520.svg I-520 in North Augusta File:US 278.svgFile:South Carolina 125.svgFile:South Carolina 421.svg US 278 / SC 125 / SC 421 near Clearwater File:US 1.svgFile:South Carolina 19.svg US 1 / SC 19 in Aiken File:US 301.svgFile:US 601.svg US 301 / US 601 in Bamberg File:I-95.svg I-95 in St. George File:I-26.svg I-26 near Ladson File:US 52.svg US 52 in North Charleston File:I-526.svg I-526 in North Charleston File:I-26.svgFile:US 17.svg I-26 / US 17 in Charleston
East end	Line Street / King Street in Charleston
Location
Country	United States
State	South Carolina
Counties	Aiken, Barnwell, Bamberg, Orangeburg, Dorchester, Charleston
Highway system
United States Numbered Highway System List Special Divided South Carolina State Highway System Interstate US State Scenic
← I-77 → SC 79

U.S. Route 78 (US 78) is a 142.207-mile (228.860 km) U.S. highway that travels from Cash, Arkansas to Charleston, South Carolina. In the U.S. state of South Carolina, it travels from the Savannah River at North Augusta to its eastern terminus in Charleston; connecting the cities of Aiken, Summerville, and North Charleston.

Route description

US 78 enters South Carolina by crossing the Savannah River in North Augusta; sharing concurrences with US 1, US 25, US 278 and South Carolina Highway 121 (SC 121). In the immediate 2-mile (3.2 km) area, it sheds most concurrencies, sharing only with US 1 towards Aiken; it also connects with Interstate 520 (I-520), which is a partial beltway around the Augusta metropolitan area. In Aiken, it travels through the downtown area, where US 1 splits north towards Columbia. West of Williston is SC 781, which connects back with US 278; the routing allows travelers to bypass Aiken all together between Williston and Augusta. Traveling in a southeasterly direction, it goes through the cities and towns of Williston, Blackville, Denmark, Bamberg, Branchville and St. George, where connects with I-95. Continuing east, it passes through Dorchester and begins to parallel with I-26 in a southeasterly direction through Summerville. It enters Charleston County at Lincolnville, where the highway skirts just inches south of the Berkeley County line. In North Charleston, US 78 shares a concurrency with US 52, as it connects with I-526. Entering Charleston, it splits with US 52 and goes south along King Street; its eastern terminus at Line Street, a block away from US 52's eastern/southern terminus and nearby to I-26/US 17 interchange. US 78 is a predominantly two-lane rural highway connecting much of the Lowcountry. Wider sections (four-lanes or more) are found between North Augusta–Aiken, St. George, and North Charleston. Though it provides the most direct route between Augusta (and points west, such as Atlanta) and Charleston (using US 278 and SC 781 to bypass Aiken), it is not a busy route because of the many cities and towns it goes through.

History

Established in 1927 as an original US highway, it traveled closely as it does today; from North Augusta to Charleston, connecting the cities and towns of Aiken, Bamberg, St. George, and North Charleston. By 1931, US 78 was rerouted north of Summerville and Lincolnville, leaving Richardson Avenue/Lincoln Avenue. Around 1939, US 78 was realigned from Meeting Street to Rivers Street, south of Durant Avenue in the Charleston area. Also in 1939, US 78 was fully paved in the state, its last unpaved section was between St. George and US 178. By 1952, US 78 was placed on new four-lane highway bypassing Clearwater, Burnettown, and Gloverville; also by same year a new bridge was constructed over the Savannah River, leaving Fifth Street Bridge. By 1967, US 78 was adjusted to bypass south of mainstreet Blackville, leaving a secondary road, but was later upgraded as a connector (signed as a business loop).

Major intersections

County	Location	mi	km	Destinations	Notes
Savannah River		0.000	0.000	File:South plate.svg File:US 1.svgFile:South plate.svg File:US 25.svgFile:South plate.svg File:Georgia 121.svgFile:West plate.svg File:US 78.svgFile:West plate.svg File:US 278.svgFile:West plate.svg File:Georgia 10.svg US 1 south / US 25 south / SR 121 south / US 78 west / US 278 west / SR 10 west (Gordon Highway) – Augusta	Continuation into Georgia
		0.000– 0.005	0.000– 0.0080	South Carolina–Georgia state line
Aiken	North Augusta	0.188– 0.340	0.303– 0.547	5th Street Bridge / River North Drive	Interchange
		0.640– 0.710	1.030– 1.143	File:US 25.svgFile:North plate South Carolina.svg File:South Carolina 121.svg US 25 / SC 121 north – North Augusta, Edgefield	East end of freeway section; eastern end of US 25 and SC 121 concurrencies
		0.870	1.400	File:To plate blue.svg File:I-20.svgFile:To plate South Carolina.svg File:South Carolina 230.svg Buena Vista Avenue (SC 125 Conn. west) to I-20 / SC 230	Right-in/right-out interchange; westbound exit and entrance; eastern terminus of SC 125 Conn.
		1.560– 1.950	2.511– 3.138	File:I-520.svg I-520 (Palmetto Parkway) – Augusta, Columbia, Atlanta	I-520 exit 17
	Clearwater	2.150– 2.380	3.460– 3.830	File:East plate.svg File:US 278.svgFile:South Carolina 125.svg US 278 east / SC 125 (Atomic Road) – Beech Island, Savannah River Site File:North plate South Carolina.svg File:South Carolina 421.svg SC 421 north (Augusta Road) – Clearwater	Interchange; eastern end of US 278 concurrency; southern terminus of SC 421
	Clearwater–Burnettown line	4.040	6.502	File:South Carolina 126.svg SC 126 (Belvedere–Clearwater Road) – Belvedere
	Warrenville	10.324– 10.330	16.615– 16.625	File:South Carolina 191.svg SC 191 (Main Street) – Graniteville, Vaucluse, Warrenville
	Aiken	12.300	19.795	File:North plate.svg File:Truck plate.svg File:US 1.svgFile:East plate.svg File:Truck plate.svg File:US 78.svgFile:Truck plate South Carolina.svg File:South Carolina 19.svgFile:South Carolina 118.svgFile:To plate blue.svg File:I-20.svgFile:To plate South Carolina.svg File:South Carolina 302.svg US 1 Truck north / US 78 Truck east / SC 19 Truck / SC 118 (Robert M Bell Parkway / Hitchcock Parkway) to I-20 / SC 302	Southern terminus of US 1 Truck; western terminus of US 78 Truck; to USC Aiken
		12.470	20.069	File:South plate South Carolina.svg File:South Carolina 421.svg SC 421 south (Augusta Road)	Northern terminus of SC 421; no left turn allowed from SC 421 NB to US 1 SB/US 78 WB
		15.620	25.138	File:South Carolina 19.svg SC 19 (Laurens Street) – Eureka, Edgefield
		15.800	25.428	File:Connector plate South Carolina.svg File:South Carolina 19.svg SC 19 Conn. (Chesterfield Street) – Savannah River Site	Signed also as SC 19
		15.890	25.572	File:North plate.svg File:US 1.svg US 1 north (York Street NE)	Eastern end of US 1 concurrency
	​	18.250	29.371	File:East plate South Carolina.svg File:South Carolina 4.svgFile:To plate South Carolina.svg File:South Carolina 302.svg SC 4 east (Wagener Road) to SC 302	Western terminus of SC 4
	​	18.450	29.692	File:West plate.svg File:Truck plate.svg File:US 78.svgFile:East plate South Carolina.svg File:Truck plate South Carolina.svg File:South Carolina 4.svgFile:South plate South Carolina.svg File:South Carolina 118.svgFile:South Carolina 302.svgFile:To plate.svg File:Truck plate.svg File:US 1.svgFile:To plate blue.svg File:I-20.svg US 78 Truck west / SC 4 Truck east / SC 118 south / SC 302 (Pine Log Road SE) to US 1 Truck / I-20Module:Jct error: Invalid "to" argument	Western end of SC 4 Truck concurrency; eastern terminus of US 78 Truck; northern terminus of SC 118
	Windsor	28.880	46.478	File:East plate South Carolina.svg File:Truck plate South Carolina.svg File:South Carolina 4.svg SC 4 Truck east (State Park Road) – Aiken State Park, State Park Boat Landing	Eastern end of SC 4 Truck concurrency
	​	34.157	54.970	File:West plate South Carolina.svg File:South Carolina 781.svg SC 781 west (Tinker Creek Road)	Eastern terminus of SC 781
Barnwell	Williston	37.297	60.024	File:South plate South Carolina.svg File:South Carolina 39.svg SC 39 south (Rosemary Street / Dunbarton Road)	Western end of SC 39 concurrency
		37.550	60.431	File:North plate South Carolina.svg File:South Carolina 39.svg SC 39 north (Elko Street / Springfield Road) – Springfield	Eastern end of SC 39 concurrency
	Elko	40.470	65.130	File:South Carolina 37.svg SC 37 (Bay Street) – Barnwell, Springfield
	Blackville	46.930	75.527	File:East plate.svg File:Business plate.svg File:US 78.svg US 78 Bus. east (Walker Street)	Signed western terminus of US 78 Bus.
		47.010	75.655	File:South Carolina 3.svg SC 3 (Solomon Blatt Avenue) – Barnwell
		47.090	75.784	File:South plate South Carolina.svg File:South Carolina 304.svg SC 304 south (Lartigue Street) – Hilda	Northern terminus of SC 304
		47.540	76.508	File:West plate.svg File:Business plate.svg File:US 78.svg US 78 Bus. west (Main Street / US 78 Conn. west)	Eastern terminus of US 78 Bus./US 78 Conn.
Bamberg	Denmark	55.250	88.916	File:US 321.svgFile:South Carolina 70.svg US 321 / SC 70 (Palmetto Avenue) – Orangeburg, Barnwell
	Bamberg	61.960	99.715	File:US 301.svgFile:US 601.svg US 301 / US 601 – Orangeburg, Allendale, Ehrhardt
		62.710	100.922	File:South plate South Carolina.svg File:South Carolina 362.svg SC 362 south – Smoaks, Williams	Northern terminus of SC 362
	​	71.980	115.841	File:South plate South Carolina.svg File:South Carolina 61.svg SC 61 south (Edisto River Road)	Northern terminus of SC 61
	​	72.170	116.146	File:To plate South Carolina.svg File:South Carolina 61.svg US 78 Conn. south to SC 61	Northern terminus of US 78 Conn.
Orangeburg	Branchville	76.660	123.372	File:South plate.svg File:US 21.svg US 21 south (Freedom Road) – Smoaks, Walterboro, Savannah	Western end of US 21 concurrency
		76.860	123.694	File:North plate.svg File:US 21.svg US 21 north (Freedom Road) – Orangeburg, Columbia	Eastern end of US 21 concurrency
Dorchester	St. George	89.810– 89.830	144.535– 144.567	File:I-95.svg I-95 – Savannah, Florence	I-95 exit 77
		91.830	147.786	File:US 15.svg US 15 (Parler Avenue) – Walterboro, Santee
	​	105.470	169.738	File:West plate.svg File:US 178.svg US 178 west (East Main Street) – Harleyville	Eastern terminus of US 178
	​	108.176	174.092	File:North plate South Carolina.svg File:South Carolina 27.svg SC 27 north (Ridgeville Road) – Holly Hill	Western end of SC 27 concurrency
	​	108.664	174.878	File:South plate South Carolina.svg File:South Carolina 27.svg SC 27 south (Ridgeville Road) – Ridgeville	Eastern end of SC 27 concurrency
	​	110.114	177.211	School Street west (SC 173 west) / Myers–Mayo Road east	Eastern terminus of SC 173 and School Street; western terminus of Myers–Mayo Road
	Summerville	119.124	191.711	File:Alt plate.svg File:US 17.svg US 17 Alt. (North Main Street) – Walterboro, Moncks Corner
		119.404	192.162	File:South Carolina 165.svg SC 165 (Berlin G. Myers Parkway / US 17 Alt. Truck) – Ravenel
Charleston	North Charleston	126.114– 126.139	202.961– 203.001	File:I-26.svg I-26 – Columbia, Charleston	I-26 exit 205
		127.534– 128.334	205.246– 206.534	File:West plate.svg File:US 52.svg US 52 west / N.A.D. Road east – Goose Creek, Moncks Corner	Western end of US 52 concurrency; western terminus of N.A.D. Road; interchange
		129.224	207.966	File:To plate blue.svg File:East plate blue.svg File:I-26.svg US 52 Conn. south to I-26 east – Charleston	Northern terminus of US 52 Conn.; I-26 exit 209A; no access to I-26 west
		133.844– 134.034	215.401– 215.707	File:I-526.svg I-526 (Mark Clark Expressway) – Savannah, Mount Pleasant	I-526 exit 18
		137.044	220.551	File:West plate South Carolina.svg File:South Carolina 642.svg SC 642 west (Dorchester Road)	Eastern terminus of SC 642
		137.194	220.792	File:South plate South Carolina.svg File:South Carolina 7.svg SC 7 south (Cosgrove Avenue)	Northern terminus of SC 7
		137.684	221.581	File:East plate.svg File:US 52.svg US 52 east (Carner Avenue)	Eastern end of US 52 concurrency
	Charleston	142.081	228.657	File:East plate blue.svg File:I-26.svgFile:South plate.svg File:US 17.svg I-26 east / US 17 south / Carolina Street / Sheppard Street	I-26’s eastbound and US 17’s southbound exit only
		142.207	228.860	File:To plate.svg File:North plate.svg File:US 17.svg Line Street to US 17 north / King Street east	Eastern terminus; King Street continues past terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

See also

• Special routes of U.S. Route 78

External links

Template:Attached KML/U.S. Route 78 in South Carolina

KML is not from Wikidata

• File:Commons-logo.svg Media related to U.S. Route 78 in South Carolina at Wikimedia Commons
• End of US highway 78 on USends.com
• US 78 at Virginia Highways' South Carolina Highways Annex