South Carolina Highway 30
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| Robert B. Scarborough Bridge | ||||
| Route information | ||||
| Maintained by SCDOT | ||||
| Length: | 3.05 mi (4.91 km) | |||
| Existed: | 1996 – present | |||
| Major junctions | ||||
| West end: |
 SC 171 in Charleston
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 SC 61
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| East end: |
 US 17 in Charleston
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| Location | ||||
| Counties: | Charleston | |||
| Highway system | ||||
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→| Robert B. Scarborough Bridge | |
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| Crosses | Ashley River and Intracoastal Waterway |
| Official name | Robert B. Scarborough Bridge |
| ID number | 001040003000100 |
| Characteristics | |
| Design | concrete box girder |
| Total length | 3322.3 m |
| Width | 24.4 m |
| Clearance below | 20.4 m |
| History | |
| Opened | September 4, 1993 |
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.
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).
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.
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. The bridge also crosses Wappoo Creek, which is a part of the Intracoastal Waterway.
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