Cooper River Bridges (1929–2005)


Cooper River Bridge
The Grace Memorial Bridge (left) and the Pearman Bridge (right)
Coordinates32°48′7.47″N 79°55′52.73″W / 32.8020750°N 79.9313139°W / 32.8020750; -79.9313139
Carries3 southbound lanes and 2 northbound lanes of US 17
CrossesCooper River and Town Creek
LocaleCharleston, SC
Official nameJohn P. Grace Memorial Bridge (Southbound span)
Silas N. Pearman Bridge (hybrid span)
Maintained byCooper River Bridge, Inc (prior to 1941), SCDOT
Characteristics
DesignCantilever truss with suspended center span
Total length2.7 miles (4.3 km) (1,050 feet (320 m))
Width20 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)
Height250 feet (76 m)
Longest span760 ft (232 m)
Load limit5 short tons (4.5 t)) (Grace Memorial Bridge)
Clearance aboveUnlimited
Clearance below155 ft (47 m)
History
Construction startFebruary 7, 1928 (1928-02-07)
May 2, 1963 (1963-05-02)
Construction endJuly 8, 1929 (1929-07-08)
April 29, 1966 (1966-04-29)
OpenedJuly 8, 1929 (1929-07-08) (Grace Bridge)
April 29, 1966 (1966-04-29) (Pearman Bridge)
ClosedJuly 16, 2005 (July 16, 2005)
Statistics
Daily traffic35,000
Toll$0.50 per vehicle and driver and $0.15 for each additional passenger (abolished in 1946)
Location

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 designed and constructed by a private company known as Cooper River Bridge, Inc, and the Pearman Bridge was designed by HNTB Corporation and constructed by SCDOT. The bridges were replaced with the Arthur Ravenel Jr. Bridge in 2005.