Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Creek , Charleston, Charleston County, SC
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth longest cantilever span in the world.
Unprocessed Field note material exists for this structure: N900
Survey number: HAER SC-32
Building/structure dates: 1928-1929 Initial Construction
Building/structure dates: 1946 Subsequent Work
Building/structure dates: 1960 Subsequent Work