Saturn Parkway Extension

The Work

The project included three miles of new roadway and three bridges, incorporating a precast Contech 53-ft bridge structure over an existing stream and a grade-separated crossing over the CSX railroad. During the design phase of the project, Superior won the job by creatively reworking the conceptual drawings from TDOT to reroute an existing stream rather than building a structure over the stream. With the stream moved 50 feet, given a different bend, and reconnected, Superior eliminated an entire structure from the project and built the road at grade through this section.

Superior then built a precast Contech 53-foot bridge structure over another part of the existing stream — a process that expedited construction, as it was set in under a week’s time. The new signalized intersection at the entrance to the GM plant maintains free-flow access to the trucks entering and exiting the plant. We also built a grade-separated crossing over the CSX railroad, coordinating daily with the CSX flagger so the rail line remained active while we completed clearances, excavations and shoring, debris collection, and drainage.