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Seabreeze Bridge – S.R. 430
Daytona Beach, Florida
This twin structure replaced the existing SR 430 Bridge over the Halifax River and Intracoastal Waterway at Daytona Beach, Florida.
The eastbound bridge has spans of 175 ft., 247 ft., and 140 ft. and carries two traffic lanes with shoulders and a sidewalk. The total linear feet of the structure is 4,610 ft. and deck area is 226,082 sq. ft. Each typical span consists of 20 variable depth precast segments 12 ft. long and a 2 ft. cast-in-place closure pour. The segments vary in height from 13 ft. to 8 ft. A total of 404 precast segments were required, including pier and end bent segments.
The superstructure was erected in balanced cantilever using a self-launching, overhead gantry to place the segments. The segments are prestressed transversally and longitudinally using post-tensioning tendons. The superstructure is supported on 8 ft. by 16.5 ft. precast hollow box piers that are also post-tensioned.
The water piers also utilize a conventionally reinforced cast-in-place solid concrete section at the base of the column to withstand ship impact design loads. The water footings, located at mudline are 41 ft. in diameter. Thirty-two footings, each 24 ft. in diameter, support square precast concrete piles. The land piers are supported by 28-ft. by 34-ft. footings with 24-in. square precast concrete piles.
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:
GLF Construction Company
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