KCA provided design services for this project, which involved 8.3 miles of a four-lane expressway on new alignment, including one major interchange, mainline and ramp toll plazas, and 8.6 miles of frontage and access roads. The alignment crosses many wetland areas and closed drainage basins necessitating extensive stormwater management design. Ten dry retention ponds, three wet retention ponds, and eight large retention ditches were designed to meet SWFWMD permitting requirements. Five bridges were included on the project, including three, two-span prestressed concrete structures and two, two-span continuous steel plate girder structures. KCA’s Drainage Engineers were responsible for extensive coordination with environmental permitting agencies in the design of stormwater management facilities and wildlife crossings, meeting water quantity/quality requirements using wet and dry detention retention (including 13 stormwater ponds and eight retention ditches), and floodplain compensation provided in the ditches within the right-of-way and infield areas without acquiring additional right-of-way for off-site floodplain compensation ponds.
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