The two truss bridges had become functionally obsolete by 1979. One lane was reversible on the Pearman bridge, which led to signs warning "Use lanes with green arrow" and "Do not use red X lane" on the bridge. Its three lanes, at a modern 12-foot (3.7 m) width, opened to northbound traffic, while its older counterpart carried the southbound traffic into downtown Charleston. Pearman Bridge opened in 1966 at cost of $15 million (equivalent to $125.28 million in 2021). Named for the then–South Carolina Highway Commissioner, the Silas N. A new bridge was constructed alongside and parallel to it. Later, changes to the side rail and curb reduced the lane width further. In 1943, the state of South Carolina purchased the bridge, and the tolls were lifted in 1946.īy the 1960s, the Grace Memorial Bridge had become insufficient, with its two narrow 10-foot (3.0 m) lanes built for Ford Model As and its steep grades of up to six percent. Engineers and critics proclaimed colorful descriptions of the unique structure, deeming it "the first roller-coaster bridge" and citing that "steep approaches, stupendous height, extremely narrow width, and a sharp curve at the dip conspire to excite and alarm the motorist." Privately owned originally, a $1.00 toll was charged for car and driver to cross. Following a 17-month construction at a cost of $6 million, it opened with a three-day celebration that attracted visitors from around the globe. The total length of the structure was about 2.7 miles (4.3 km). The mainspan of the second cantilever was the twelfth-longest in the world. The main span of the double cantilever truss bridge was the fifth-longest in the world at 1,050 feet (320 m) and soared 150 feet (46 m) above the river. Grace Memorial Bridge for former Charleston mayor John P. The first bridge to cross the lower Cooper River opened in 1929, eventually named the John P. 2.4 Comparison with Talmadge Memorial Bridge and Sidney Lanier Bridge.It was built using the design–build method and was designed by Parsons Brinckerhoff. The bridge has a main span of 1,546 feet (471 m), the third longest among cable-stayed bridges in the Western Hemisphere. Bridge (also known as the Ravenel Bridge and the Cooper River Bridge ) is a cable-stayed bridge over the Cooper River in South Carolina, US, connecting downtown Charleston to Mount Pleasant.
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