Bridges--South Carolina; Bridges -- Design and Construction; John P. Grace Memorial Bridge (Charleston, S.C.); Timber; Railroads; Ships
Image #4 (4.5" x 2.75"): "11-15-28. High Boom! Minimum reach with main falls is about 5 ft. Note the slack backstays. Weight of traveler complete = 122 tons, including 31 ton; 150 HP gas. engine on the upper deck and 60 HP aux. gas hoist on platform below."; Unnumbered Image (5" x 7"): "Span traveler A erecting on the Charleston or West Approach. Rear boom of traveler not yet erected."
Digital image copyright 2009, Charleston County Public Library. All rights reserved. For more information contact the Charleston Archive, Charleston County Public Library, 68 Calhoun Street, Charleston, SC 29401