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Sidney Lanier Bridge Brunswick, Georgia The Sidney Lanier bridge replacement is a cable-stayed bridge with a main span of 1250-ft. and two side spans of 623-ft. each. When complete, the cable-stayed bridge will be the longest spanning bridge in the state of Georgia and will allow larger ships to enter the port of Brunswick. At the centerline of the navigational channel, the main span will provide a clearance of 185-ft. The bridge has twin H-shaped concrete towers that rise to an elevation of 480-ft. with each tower anchoring cable stays in two planes. The concrete superstructure is being constructed as cast-in-place segmental with form travelers. The superstructure has a total width of 79.5-ft. and will accommodate four 12-ft. traffic lanes and two 8-ft. shoulders. Each segment of the superstructure measures approximately 27.5-ft. in length, consisting of concrete edge girders with a depth of 5 ft. The bridge deck has a thickness of 11-in. with transverse floor beams at each edge girder stay anchorage location. Each of the towers supports the deck with 44 stay cables anchored to the concrete edge girders on either side of the bridge deck, resulting in a total of 176 stay cables supporting the concrete superstructure. Finley McNary provided the design and details required for the contractor’s proposed erection scheme, tower and deck segment shop drawings, geometrical control of casting, erection and procedural manuals, and casting curves. During construction, Finley McNary provided design of the wind tie-down system, construction loading analysis and on-site assistance and technical support. Owner: Georgia Department of Transportation Client: Recchi-GLF, A Joint Venture |