South Carolina Highway 30

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South Carolina Highway 30

James Island Expressway
(or the James Island Connector)
SC 30 highlighted in red
Route information
Maintained by SCDOT
Length3.050 mi[1] (4.908 km)
Major junctions
South end SC 171 in Charleston
Major intersections SC 61 in Charleston
North end US 17 in Charleston
CountryUnited States
StateSouth Carolina
Highway system
US 29 SC 31

South Carolina Highway 30 (SC 30, also known as the James Island Expressway or the James Island Connector) is a 3.050-mile-long (4.908 km) freeway in Charleston, South Carolina. The freeway travels from SC 171 on James Island to U.S. Route 17 (US 17) in downtown Charleston.

Route description

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.

Robert B. Scarborough Bridge

Robert B. Scarborough Bridge
James Island Expressway.JPG
CrossesAshley River and Intracoastal Waterway
Official nameRobert B. Scarborough Bridge
ID number001040003000100
Designconcrete box girder
Total length3322.3 m
Width24.4 m
Clearance below20.4 m
OpenedSeptember 4, 1993; 30 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 original SC 30 traveled 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 to 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 the North Carolina state line at McColl. In 1927, it was truncated to Walterboro, as parts were transferred to US 17 and SC 28 (this segment is 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 Mills to SC 92 near Cross Anchor. In 1956, this became part of an extended SC 49.

The current 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 1960s, but it was determined that there was not sufficient traffic demand to fund the route and the bridge entirely by tolls.[4]

Exit list

The entire route is in Charleston, Charleston County.

0.0000.000 SC 171 (Folly Road) – Folly Beach
0.7901.2712Harbor View Road
SC 61 west – Summerville
Eastern terminus of SC 61
Robert B. Scarborough Bridge over Ashley River
2.7204.377Lockwood Drive / Calhoun Street
3.0504.908 US 17 (Spring Street / Savannah Highway) / Lockwood DriveInterchange
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved December 22, 2020.
  2. ^ Google. "SC 30 overview map" (Map). Google Maps. Google.
  3. ^ a b VanEgeren, Jessica (September 4, 2003). "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