A new $389 million interchange was constructed as part of Tampa’s interstate system to improve traffic movement and safety for motorists. The interchange connects the Selmon Expressway (designed by GM2's Complex Bridge staff) to I-4, providing an important trucking connection and transportation improvement. The new interchange also provides direct access for trucks to I-4 to the Port of Tampa, relieving traffic from Historic Ybor City. The project consists of 35 separate bridge structures and widenings, constructed using a variety of construction methods and materials (precast segmental, bulb-t). Piers are rectangular, with a maximum height of 50’. The project was built in a highly congested urban area that is next to and over various railroads, roadways and buildings. The foundations consist of large diameter drilled shafts and extensive utility relocation and maintenance of traffic was performed to allow for the construction of these bridges.

GM2's Complex Bridge staff designed 9,086 feet of the concrete segmental portion of this major interchange (six bridges). Segmental boxes range from approximately 30 feet to 64 feet in width. Total project bridge deck is 1.5 million square feet. GM2 Complex Bridge staff provided precast segmental superstructure design, segmental geometry for casting, and construction engineering services to Florida DOT during construction.