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Roosevelt Bridge – S.R. 5/US 1 Stuart, Florida The Roosevelt Bridge crosses the St. Lucie River providing a minimum horizontal clearance of 90-ft, and vertical clearance of over 65-ft. for river traffic. The bridge consists of dual structures providing three lanes of traffic, shoulders and sidewalks for northbound and southbound traffic. The twin structures are 9,052-ft. in total length and were built in balanced cantilever with an overhead gantry. The precast segments measure 61-ft. in width, 7- to 9-ft., in length and taper in depth from 12-ft. at the piers to 11-ft. at midspan. There are 1,112 precast segments in 41 spans with span lengths ranging from 196-ft. to 260-ft. Segment weights range from 55 to 75 tons. The pier segments are cast-in-place monolithically with pier columns. The precast segments are then erected with a 6 in. cast-in-place closure between the pier segment and the precast segments on either side of the pier segment. A complete cycle of erecting a cantilever, making continuity with the previous span and launching the gantry forward to erect the next cantilever was a two-week process. Construction of the concrete segmental structures was awarded to Recchi America, Inc. based on their bid of approximately $43 million. The bridge was opened to traffic in March 1998. Finley McNary provided integrated segment drawings, geometrical control of casting, erection, and procedural manuals, casting curves, analysis of construction loading, design of erection equipment and falsework, post-tensioning calculations, and on and off-site technical assistance. Owner: Florida Department of Transportation Client: Recchi America, Inc. |