U.S. Route 278 in South Carolina
# U.S. Route 278 in South Carolina

U.S. Route 278 (US 278) is a 146.130-mile (235.173 km) east–west United States highway that traverses through the South Carolina Lowcountry, from North Augusta to Hilton Head Island.

## Route description

After crossing the Savannah River from Georgia, US 278 bypasses downtown North Augusta, South Carolina to the south en route to Beech Island and Johnson Crossroads. It then forms a de facto northern boundary of the Savannah River Site, crossing into the property on a few occasions. The route then continues eastward and then southward through the communities of Barnwell, Kline, Allendale, Fairfax, Hampton, Varnville, Ridgeland, and Hardeeville where it meets I-95. US 278 shares the route between Ridgeland and Hardeeville with US 17.

From Allendale to Almeda, US 278 runs along the CSX Augusta Subdivision.

Upon reaching Hardeeville, the route heads eastward toward the Atlantic with large residential and commercial developments lining the spine of the road from Hardeeville through Okatie and Bluffton. The route crosses over Calibogue Sound onto Hilton Head Island. After a five-mile stretch in which the route is tolled, US 278 ends at US 278 Business on the southern portion of Hilton Head Island, just outside Sea Pines Plantation.

### Cross Island Parkway

On Hilton Head Island, US 278 was previously routed along what is now US 278 Business until a new toll road, named the Cross Island Parkway, opened on January 16, 1998. The 6.8-mile (10.9 km) section of roadway cost $83 million to build and was funded with a combination of state funds, federal funds, state highway bonds and tolls.

The controlled access toll road has only one interchange along its route at Marshland Drive. It was the first toll road built in South Carolina in modern history. A majority of the road users pay their tolls using Palmetto Pass, South Carolina's system for electronic toll collection. Tolls were removed on June 30, 2021, not long after the last of the bonds sold to build the road were retired.

The completion of the Cross Island Parkway (a direct expressway connection from the north side to the south side of the island) has caused a great amount of commercial and residential development along the road. Before the toll road opened, it could take one hour to travel the 12-mile (19 km) route of what was then signed as US 278 (William Hilton Parkway) during peak tourism season. The Cross Island Parkway greatly relieved congestion on that road when it opened.

## History

US 278 was established, in South Carolina, in 1965, traveling from Augusta, Georgia to Hilton Head Island. Crossing the Savannah River, in concurrency with US 1/US 25/US 78/SC 121, it then overlapped with SC 125 on Atomic Road, to Beech Island. Replacing SC 28 from Beech Island to Almeda, where it then replaced SC 128, going through Ridgeland, to Old House. Replacing part of SC 462, it went south into Bluffton and then east into Hilton Head Island, replacing part of SC 46.

Throughout the 1980s, US 278 was widen to four-lane, in phases, east of SC 170, in Bluffton. In 1996-1997, US 278 was rerouted south of Ridgeland to Hardeeville, then east on new primary routing to SC 170, in Bluffton. Its former routing was replaced by SC 336 to Old House and SC 462 to SC 170. In 1998, US 278 was rerouted onto new routing along the west side of Hilton Head Island; known as the Cross Island Parkway, the toll road provides quicker access to the far south end of the island. The old alignment, in Hilton Head Island, became US 278 Business.

### Tolls

Toll rates, for 2-axle vehicles, along Cross Island Parkway were $1.25 at the toll plaza and $1.00 at the Marshland Road/Spanish Wells Road interchange. Each additional axle was $1.00 (plaza and ramps). The toll plaza had both electronic toll collection (ETC) and cash lanes, which were staffed 24 hours a day; Marshland Road/Spanish Wells Road interchange accept only ETC or exact change only. Those that did not have exact change or do not pay the toll had five days to contact the Cross Island Parkway Customer Service Center to make a payment; after that time, a violation notice was mailed. Travelers that made a mistake of taking the toll road may request a "Turn Around Pass", which gives them ten minutes to continue along the highway, turn around at the roundabout and return the pass at the toll plaza on the return trip.

On July 1, 2021, the tolls were removed because the final bond payment was paid on the $81 million road that was opened in 1998.

## Major intersections

| County | Location | mi | km | Destinations | Notes |
| - | - | - | - | - | - |
| Savannah River | Savannah River | 0.000 | 0.000 | US 1 south / US 25 south / SR 121 south / US 78 west / US 278 west / SR 10 west (Gordon Highway) – Augusta | Continuation into Georgia |
| Savannah River | Savannah River | 0.000– 0.005 | 0.000– 0.0080 | South Carolina–Georgia state line | South Carolina–Georgia state line |
| Aiken | North Augusta | 0.188– 0.340 | 0.303– 0.547 | 5th Street Bridge / River North Drive | Interchange |
| Aiken | North Augusta | 0.640– 0.710 | 1.030– 1.143 | US 25 / SC 121 north – North Augusta, Edgefield | East end of freeway section; eastern end of US 25 and SC 121 concurrencies |
| Aiken | North Augusta | 0.870 | 1.400 | 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. |
| Aiken | North Augusta | 1.560– 1.950 | 2.511– 3.138 | I-520 (Palmetto Parkway) – Augusta, Columbia, Atlanta | I-520 exit 17 |
| Aiken | Clearwater | 2.380 | 3.830 | US 1 north / US 78 east (Jefferson Davis Highway east) / SC 421 begins – Aiken, North Augusta, Clearwater | Interchange; eastern end of US 1/US 78 concurrencies; western end of SC 421 concurrency; southern terminus of SC 421 |
| Aiken | Clearwater | 2.380– 2.465 | 3.830– 3.967 | SC 125 north (Atomic Road) – North Augusta | Eastern end of SC 421 concurrency (eastbound only); western end of SC 125 concurrency; interchange |
| Aiken | Beech Island | 7.270– 7.500 | 11.700– 12.070 | SC 28 west (Sand Bar Ferry Road) / SC 125 south (Atomic Road) – Savannah River Site, Augusta | Eastern end of SC 125 concurrency; eastern terminus of SC 28; interchange |
| Aiken | ​ | 13.480 | 21.694 | SC 302 (Silver Bluff Road) – Jackson, Aiken | |
| Aiken | New Ellenton | 19.690 | 31.688 | SC 19 north – New Ellenton, Aiken, Savannah River Site | Southern terminus of SC 19 |
| Aiken | ​ | 29.060 | 46.768 | SC 781 east – Williston, Charleston | Western terminus of SC 781 |
| Barnwell | ​ | 32.730 | 52.674 | SC 39 – Williston | |
| Barnwell | ​ | 41.170 | 66.257 | SC 37 north – Elko, Williston | Southern terminus of SC 37 |
| Barnwell | Barnwell | 43.500 | 70.006 | SC 64 west (Dunbarton Boulevard) – Savannah River Site | Western end of SC 64 concurrency |
| Barnwell | Barnwell | 43.760 | 70.425 | SC 70 east (Allen Street) / Dunbarton Boulevard – Denmark | Western terminus of SC 70 |
| Barnwell | Barnwell | 44.100 | 70.972 | SC 64 east (Hagood Avenue) – Walterboro | Eastern end of SC 64 concurrency |
| Barnwell | Barnwell | 45.430 | 73.112 | SC 3 north (Marlboro Avenue) – Columbia | Western end of SC 3 concurrency |
| Barnwell | ​ | 46.670 | 75.108 | SC 3 south – Sylvania | Eastern end of SC 3 concurrency |
| Barnwell | ​ | 46.900 | 75.478 | SC 300 south – Ulmer | Northern terminus of SC 300 |
| Allendale | Allendale | 60.610 | 97.542 | US 301 north (Burton's Ferry Highway) – Walterboro | Western end of US 301 concurrency; to USC Salkehatchie |
| Allendale | Allendale | 60.920 | 98.041 | US 301 south (Main Street) / SC 125 north (Railroad Avenue) – Savannah River Site, Augusta, Sylvania | Eastern end of US 301 concurrency |
| Allendale | Fairfax | 66.370 | 106.812 | US 321 (Hampton Avenue) – Estill, Savannah, Orangeburg, Columbia | To USC Salkehatchie |
| Hampton | Hampton | 75.330 | 121.232 | SC 363 west (Shaw Drive) – Lake Warren State Park | Western end of SC 363 concurrency |
| Hampton | Hampton | 75.490 | 121.489 | US 601 north (Hoover Street) – Orangeburg | Western end of US 601 concurrency |
| Hampton | Hampton | 76.050 | 122.391 | US 601 south (First Street) – Estill, Savannah | Eastern end of US 601 concurrency |
| Hampton | Hampton | 76.240 | 122.696 | SC 363 east (Third Street) – Walterboro, Charleston | Eastern end of SC 363 concurrency |
| Hampton | Varnville | 78.130 | 125.738 | SC 63 east (Main Street) – Walterboro | Western terminus of SC 63 |
| Hampton | Almeda | 80.240 | 129.134 | SC 68 east (Yemassee Highway) – Yemassee | Western terminus of SC 68 |
| Jasper | Grays | 91.870 | 147.850 | SC 3 north (Heritage Road) – Early Branch | Southern terminus of SC 3 |
| Jasper | Gillisonville | 96.750 | 155.704 | SC 462 west (Gillison Branch Road) – Pineland | Western end of SC 462 concurrency |
| Jasper | ​ | 97.570 | 157.024 | SC 462 east (Morgandollar Road) – Coosawhatchie | Eastern end of SC 462 concurrency |
| Jasper | ​ | 102.310 | 164.652 | SC 652 west (Calf Pen Bay Road) – Pineland | Eastern terminus of SC 652 |
| Jasper | Ridgeland | 106.288 | 171.054 | Russell Street south (US 278 Conn. east) / Town Square east | Western terminus of US 278 Conn. and Town Square; northern terminus of Russell Street |
| Jasper | Ridgeland | 106.370 | 171.186 | 3rd Avenue west (US 278 Conn. west) | Eastern terminus of US 278 Conn., which takes on the 3rd Avenue name |
| Jasper | Ridgeland | 106.640 | 171.620 | US 17 north (Jacob Smart Boulevard) – Charleston | Western end of US 17 concurrency |
| Jasper | Ridgeland | 106.780 | 171.846 | SC 336 (Main Street) – Tillman, Beaufort, Hilton Head Island | |
| Jasper | Ridgeland | 109.050 | 175.499 | SR 13 south to I-95 – Savannah, Florence | Northern terminus of SC 13 |
| Jasper | Hardeeville | 119.440 | 192.220 | US 17 south (Whyte Hardee Boulevard) – Hardeeville | Eastern end of US 17 concurrency |
| Jasper | Hardeeville | 119.730 | 192.687 | I-95 – Savannah, Florence | I-95 exit 8 |
| Beaufort | ​ | 127.580– 127.601 | 205.320– 205.354 | SC 170 (Okatie Highway) – Savannah, Beaufort | To Parris Island; interchange |
| Beaufort | Bluffton | 133.510 | 214.864 | SC 46 west (Bluffton Road) – Bluffton | Eastern terminus of SC 46 |
| Beaufort | Bluffton | 137.293 | 220.952 | Bluffton Parkway | Interchange; westbound exit and eastbound entrance |
| Beaufort | Atlantic Intracoastal Waterway | | | J. Wilton Graves Bridge | J. Wilton Graves Bridge |
| Beaufort | Hilton Head Island | 140.720– 141.102 | 226.467– 227.082 | US 278 Bus. east (William Hilton Parkway east) | West end of Cross Island Parkway; western terminus of US 278 Bus.; provides access to Hilton Head Airport |
| Beaufort | Hilton Head Island | 143.290– 143.497 | 230.603– 230.936 | Marshland Road / Spanish Wells Road | East end of Cross Island Parkway |
| Beaufort | Hilton Head Island | 143.854 | 231.511 | Toll plaza (closed) | Toll plaza (closed) | Toll plaza (closed) |
| Beaufort | Hilton Head Island | 144.331 | 232.278 | Charles E. Fraser Bridge over Broad Creek | Charles E. Fraser Bridge over Broad Creek | Charles E. Fraser Bridge over Broad Creek |
| Beaufort | Hilton Head Island | 146.130 | 235.173 | US 278 Bus. west (William Hilton Parkway) / Greenwood Drive / Pope Avenue – Sea Pines, Harbour Town, Beaches | Roundabout; eastern terminus of US 278 and US 278 Bus. |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Closed/former Incomplete access ||||||
