South Carolina Highway 30

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South Carolina Highway 30 marker

South Carolina Highway 30
Route information
Maintained by SCDOT
Length 3.05 mi[1] (4.91 km)
Existed 1996 – present
Major junctions
West end SC 171 in Charleston
  SC 61 in Charleston
East end US 17 in Charleston
Counties Charleston
Highway system
US 29SC 31

South Carolina Highway 30 (SC 30, also known as the James Island Expressway or the James Island Connector) is a 3-mile-long (4.8 km) freeway in Charleston, South Carolina. The freeway runs from SC 171 on James Island to U.S. Route 17 (US 17) in downtown Charleston.

Route description[edit]

SC 30 begins at SC 171 on James Island at exit 3. The interchange consists of a half-diamond interchange. From there, the highway runs northeast, and has two interchanges south of the Ashley River crossing. Exit 2 has access to Harbor View Road and exit 1 is for the Herbert U. Fielding Connector (SC 61).[2]

The route is an orphaned segment of Interstate 526 (I-526). Approximately seven miles (11 km) separate the eastern terminus of SC 30 from the eastern terminus of I-526's current extent. Mileage markers and exit numbers on both SC 30 and I-526 are based on an eventual merging of the routes: with miles 1 to 3 occurring on SC 30 and miles 10 to 30 used on the current I-526 route.[citation needed]

Robert B. Scarborough Bridge[edit]

Robert B. Scarborough Bridge
James Island Expressway.JPG
Coordinates 35°43′13″N 77°16′01″W / 35.7202°N 77.267°W / 35.7202; -77.267Coordinates: 35°43′13″N 77°16′01″W / 35.7202°N 77.267°W / 35.7202; -77.267
Crosses Ashley River and Intracoastal Waterway
Official name Robert B. Scarborough Bridge
ID number 001040003000100
Design concrete box girder
Total length 3322.3 m
Width 24.4 m
Clearance below 20.4 m
Opened September 4, 1993; 25 years ago (September 4, 1993)

The bridge across the Ashley River is named the Robert B. Scarborough Bridge, named for a former state legislator and highway commissioner. The bridge is 2.9 miles (4.7 km) long and cost $124.7 million to build.[3] The bridge also crosses Wappoo Creek, which is a part of the Intracoastal Waterway.


The route was proposed as early as the 1960s to provide a second and more direct connection between James Island and downtown Charleston. It opened on September 4, 1993 and provided a route off the island that did not require crossing a drawbridge.[3] The route was studied as a toll road in the sixties, but it was determined that there was not sufficient traffic demand to fund the route and the bridge entirely by tolls.[4] The original SC 30 went from St. George to Beaufort. In 1926, SC 39 was extended north with SC 4 from Santee to Summerton, on a new route to Sumter, replaced SC 42 north to Bishopville, east with SC 34 Lydia, then replaced SC 351 north to Hartsville, then northeast on a new route through Society Hill to Bennettsville, then replaced SC 38 northeast to North Carolina at McColl. In 1927, it was truncated to Walterboro, as parts were transferred to US 17 and SC 28 (this section now part of US 21). The remainder became part of US 401 in 1933. SC 30 was reused in 1935 as a renumbering of SC 15 from US 221 in Watts Mill to SC 92 near Cross Anchor. In 1956, this became part of an extended SC 49.

Exit list[edit]

The entire route is in Charleston, Charleston County.

0.000.00 SC 171 (Folly Road) – Folly Beach
2Harbor View Road
1 SC 61 west – SummervilleEastern terminus of SC 61
Robert B. Scarborough Bridge over
Ashley River
Lockwood Drive / Calhoun Street
2.984.80Eastern end of freeway
3.054.91 US 17 (Spring Street / Savannah Highway) / Lockwood DriveInterchange
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b South Carolina Department of Transportation: Statewide Highways 2012. Specifics: . Files: .
  2. ^ Google (2009). "SC 30 overview map" (Map). Google Maps. Google.
  3. ^ a b VanEgeren, Jessica (2003-09-04). "Route Helps Island Connect, Prosper". The Post and Courier.
  4. ^ Moore, John Hammond (1987). The South Carolina Highway Department, 1917-1987. Columbia, South Carolina: University of South Carolina Press. p. 246. ISBN 0-87249-528-0.

External links[edit]

Route map:

KML is from Wikidata