Cooper River Bridges (1929–2005)
The Cooper River Bridges were a pair of cantilever truss bridges that carried traffic over the Cooper River in Charleston, South Carolina, United States. The first bridge opened in 1929, a second one opened in 1966 to relieve traffic congestion. The Grace Memorial Bridge was constructed by a private company known as Cooper River Bridge, Inc, and the Pearman Bridge was built by the SCDOT and designed by HNTB Corporation.
Cooper River Bridge | |
|---|---|
The Grace Memorial Bridge (left) and the Pearman Bridge (right) | |
| Coordinates | 32°48′7.47″N 79°55′52.73″W |
| Carries | 3 southbound lanes and 2 northbound lanes of US 17 |
| Crosses | Cooper River and Town Creek |
| Locale | Charleston, SC |
| Official name | John P. Grace Memorial Bridge (Southbound span) Silas N. Pearman Bridge (hybrid span) |
| Maintained by | Cooper River Bridge, Inc (prior to 1941), SCDOT |
| Characteristics | |
| Design | Cantilever truss with suspended center span |
| Total length | 2.7 miles (4.3 km) (1,050 feet (320 m)) |
| Width | 20 feet (6.1 m) (Two 10-foot (3.0 m) lanes; Grace Bridge) 40 ft (12 m) (Three 12-foot (3.7 m) lanes; Pearman Bridge) |
| Height | 250 feet (76 m) |
| Longest span | 760 ft (232 m) |
| Load limit | 5 short tons (4.5 t)) (Grace Memorial Bridge) |
| Clearance above | Unlimited |
| Clearance below | 155 ft (47 m) |
| History | |
| Construction start | February 7, 1928 May 2, 1963 |
| Construction end | July 8, 1929 |
| Opened | July 8, 1929 (Grace Bridge) April 29, 1966 (Pearman Bridge) |
| Closed | July 16, 2005 (both bridges) |
| Statistics | |
| Daily traffic | 35,000 |
| Toll | $0.50 per vehicle and driver and $0.15 for each additional passenger (abolished in 1946) |
| Location | |
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