U.S. Route 78 in South Carolina

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U.S. Route 78 marker

U.S. Route 78
Route information
Maintained by SCDOT
Length: 141.0 mi[1] (226.9 km)
Existed: 1927 – present
Major junctions
West end: US 1 / US 25 / US 78 / US 278 / SR 10 / SR 121 at the GA line near North Augusta
  I-520 / US 25 in North Augusta
US 278 in Clearwater
US 1 in Aiken
US 321 in Denmark
US 301 / US 601 in Bamberg
US 21 in Branchville
I-95 / US 15 in St. George
I-26 near Ladson
I-26 / I-526 / US 52 in North Charleston
East end: Line Street in Charleston
Location
Counties: Aiken, Barnwell, Bamberg, Orangeburg, Dorchester, Charleston
Highway system
SC 77 SC 79

U.S. Route 78 (US 78) is a U.S. highway that travels from Memphis, Tennessee to Charleston, South Carolina. In the U.S. state of South Carolina, it runs from the Savannah River at North Augusta to its eastern terminus in Charleston; connecting the cities of Aiken, Summerville, and North Charleston.

Route description[edit]

US 78 enters South Carolina by crossing the Savannah River in North Augusta; sharing concurrences with US 1, US 25, US 278 and SC 121. In the immediate 2-mile (3.2 km) area, it sheds most concurrences, sharing only with US 1 towards Aiken; it also connects with 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 crosses into 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 Charleston (using US 278/SC 781 to bypass Aiken), it is not a busy route because of the many cities and towns it goes through.

History[edit]

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).[2][3]

Major intersections[edit]

County Location mi[1] km Destinations Notes
Aiken North Augusta 0.0 0.0 US 1 south / US 25 south / US 78 west / US 278 west / SR 10 west / SR 121 south – Augusta Continuation from Georgia over the Savannah River
0.2 0.32 5th Street Bridge / River North Drive
0.7 1.1 US 25 north / SC 121 north – North Augusta, Edgefield North end of US 25/SC 121 overlap
1.4 2.3 I-520 (Palmetto Parkway) – Augusta, Columbia, Atlanta I-520, exit 17
Clearwater 2.3 3.7 US 278 east / SC 125 (Atomic Road) – Beech Island, Savannah River Site
SC 421 north (Augusta Road) – Clearwater
East end of US 278 overlap; southern terminus of SC 421
Burnettown 4.0 6.4 SC 126 (Belvedere-Clearwater Road) – Belvedere
Graniteville 10.2 16.4 SC 191 (Main Street) – Graniteville, Vaucluse, Warrenville
Aiken 12.2 19.6 SC 118 (Robert M Bell Parkway / Hitchcock Parkway) To USC Aiken
12.4 20.0 SC 421 south (Augusta Road) Northern terminus of SC 421
15.5 24.9 SC 19 (Laurens Street) – Eureka, Edgefield
15.7 25.3
SC 19 Conn. (Chesterfield Street) – Savannah River Site
Signed also as SC 19
15.8 25.4 US 1 north (York Street NE) North end of US 1 overlap
18.1 29.1 SC 4 east (Wagener Road) to SC 302 Western terminus of SC 4
18.4 29.6 SC 302 (Pine Log Road/Rudy Mason Parkway)
34.2 55.0 SC 781 west (Tinker Creek Road) Eastern terminus of SC 781
Barnwell Williston 37.2 59.9 SC 39 south (Rosemary Street/Dunbarton Road) South end of SC 39 overlap
37.5 60.4 SC 39 north (Elko Street/Springfield Road) – Springfield North end of SC 39 overlap
Elko 40.3 64.9 SC 37 (Bay Street) – Barnwell, Springfield
Blackville 46.7 75.2
US 78 Bus. east (Walker Street)
Western terminus of US 78 Business
46.8 75.3 SC 3 (Solomon Blatt Avenue) – Barnwell
46.9 75.5 SC 304 south (Lartigue Street) – Hilda
47.3 76.1
US 78 Bus. west (Main Street)
Eastern terminus of US 78 Business
Bamberg Denmark 54.9 88.4 US 321 / SC 70 (Palmetto Avenue) – Orangeburg, Barnwell
Bamberg 61.5 99.0 US 301 / US 601 – Orangeburg, Allendale, Ehrhardt
71.3 114.7 SC 61 south (Edisto River Road) Northern terminus of SC 61
Orangeburg Branchville 75.8 122.0 US 21 south (Freedom Road) – Smoaks, Walterboro, Savannah South end of US 21 overlap
76.0 122.3 US 21 north (Freedom Road) – Orangeburg, Columbia North end of US 21 overlap
Dorchester St. George 88.8 142.9 I-95 – Savannah, Florence I-95, exit 77
90.9 146.3 US 15 (Parler Avenue) – Walterboro, Santee
104.7 168.5 US 178 west (East Main Street) – Harleyville Eastern terminus of US 178
107.5 173.0 SC 27 north (Ridgeville Road) – Holly Hill North end of SC 27 overlap
107.9 173.6 SC 27 south (Ridgeville Road) – Ridgeville South end of SC 27 overlap
Summerville 118.3 190.4
US 17 Alt. (North Main Street) – Walterboro, Moncks Corner
118.7 191.0 SC 165 (Berlin G. Myers Parkway) – Ravenel
Charleston North Charleston 124.7 200.7 I-26 – Columbia, Charleston I-26, exit 205
126.8 204.1 US 52 west / N.A.D. Road – Goose Creek, Moncks Corner West end of US 52 overlap
128.2 206.3 I-26 east – Charleston I-26, exit 209A; no access to I-26 west
132.7 213.6 I-526 (Mark Clark Expressway) – Savannah, Mount Pleasant I-526, exit 18
135.7 218.4 SC 642 west (Dorchester Road) Eastern terminus of SC 642
135.9 218.7 SC 7 south (Cosgrove Avenue) Northern terminus of SC 7
136.4 219.5 US 52 east (Carner Avenue) East end of US 52 overlap
Charleston 141.0 226.9 Line Street Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also[edit]

References[edit]

  1. ^ a b Google (May 23, 2013). "Route of US 78 in South Carolina" (Map). Google Maps. Google. Retrieved May 23, 2013. 
  2. ^ General Highway Map, Barnwell County, South Carolina (PDF) (Map). Cartography by SCDOT. South Carolina Department of Transportation. 1967. Retrieved April 11, 2014. 
  3. ^ General Highway Map, Barnwell County, South Carolina (PDF) (Map). Cartography by SCDOT. South Carolina Department of Transportation. 1987. Retrieved April 11, 2014. 

External links[edit]


U.S. Route 78
Previous state:
Georgia
South Carolina Next state:
Terminus