Wekiva Parkway Section 6

The Work

For the main channel, FDOT required a three-span continuous bridge consisting of segmental box girders. All construction activities and equipment were required to stay within the footprint of the proposed bridges. No trestles, falsework, or temporary supports were allowed in the river during construction. Superior developed a creative concept for construction, using a qualified team with unique segmental bridge construction experience and a strategic partnership with Finley Engineering for the bridge design.

Because of the limitations of space to set up a pre-cast yard, we used cast-in-place construction. Segmental construction requires post-tensioning (PT) systems, which need to be protected. Instead of grout, we used a flexible filler of microcrystalline wax to provide strand protection, enabling tendon strand replacement over time. For the conventional bridges, we used an overhang system that comes in 20-foot sections, which enabled faster deck pours. We also used a Tybot system, which uses lasers to make tie connections, further speeding up production.