South Carolina Highway 30

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South Carolina Highway 30 marker

South Carolina Highway 30
Robert B. Scarborough Bridge
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
East end: US 17 in Charleston
Counties: Charleston
Highway system
US 29 SC 31

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

Route description[edit]

SC 30 begins at South Carolina Highway 171 on James Island, at exit 3. 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. Approximately 7 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 Interstate 526 route.

Robert B. Scarborough Bridge[edit]

Robert B. Scarborough Bridge
James Island Expressway.JPG
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; 23 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]

Exit list[edit]

The entire route is in Charleston County.

Location mi km Exit Destinations Notes
Charleston 0.0 0.0 US 17 – Johns Island, Mount Pleasant Northern terminus of SC 30
0.3 0.48 Lockwood Drive, Calhoun Street
James Island 0.8 1.3 1 SC 61 west – West Ashley, Summerville Eastern terminus of SC 61
2.2 3.5 2 Harbor View Road
3.0 4.8 3 SC 171 – Folly Beach, Folly Road, West Ashley Southern terminus of SC 30
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ 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: Google

KML is from Wikidata