The 300’/400’/300’ precast concrete segmental main span was erected using a unqiue combination of balanced and uni-directional cantilever, protecting the environment and maintaining the shipping channel through construction. The twin structures of this 7,900' long bridge are part of the Mark Clark Expressway (I-526). At a bid cost of $34 million, $11 million was saved at the time of bid against the alternate steel and precast I-girder design. Cost saving features include precast piers, which were erected as quickly as 100’ of pier in a single day. Prior to opening to traffic in 1991, the bridge successfully endured Hurricane Hugo with Category Four intensity.
"Economical construction for sensitive area. Clean cut with continuity of approach
and navigational spans."
1992 Portland Cement Association
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