Above: Reconstruction of the La Paz Interchange.
Below: The Cast-High-and-Lower bridge construction method was used to accelerate construction, reduce impacts to the roadway and traffic, and avoid clearance issues with operating Metrolink train tracks.  

I-5 Widening Segment 2 (Oso Parkway to Alicia Parkway) PS&E

TranSystems, as the prime consultant, was responsible for delivering PA/ED phase services for all three segments of the I-5 Widening Project from SR-73 to El Toro Road. TranSystems was also responsible for preparing the final design PS&E for Segment 2 of the project from Oso Parkway to Alicia Parkway, the largest of the three segments.

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PS&E. TranSystems prepared the design to add one general-purpose lane, reestablish existing auxiliary lanes, construct retaining walls and sound walls, and reconstruct the La Paz Road Interchange. The La Paz Road Interchange improvements include replacing the La Paz Road Under Crossing bridge, replacing the northbound off-ramp bridge crossing over SCRRA/Metrolink railroad tracks, and widening and replacing the Oso Creek and El Toro Overhead Bridge structures and tieback walls. The PS&E for Segment 2 included designing 2 interchanges, 5 bridges, 12 retaining walls, and 4 sound walls.