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<br />` <br /> <br />Superstructure System (Spine and Rib) <br /> <br />Bridge Park Concept Typical Section <br />Prestressed concrete does not <br />require expensive coating/painting <br />system or repainting compared to <br />structural steel <br />Concrete FUB system does not <br />require access inside of box <br />eliminating lighting, ventilation, <br />and inspection access <br />requirements that are needed for <br />steel boxes. <br />Superstructure system is <br />both internally and <br />externally redundant <br />Shallower and less intrusive bridge <br />appearance since the ribs are integral <br />to the spine and not stacked on top of <br />the beam elements.