Roosevelt Bridge

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.