The Roper Yard TRAX bridge is 780 feet long and 46 feet wide with three spans over Union Pacific's Roper Yard. Each girder is approximately 10 feet tall. The largest span over the railroad is 330 feet long. The bridge approaches are constructed using Geofoam-a Styrofoam-like foundation material that speeds up construction and saves money by reducing settlement time.
TRAX will share the new bridge with a pedestrian/bike trail that will connect to the Parley's Trail.