Oldcastle Precast-Perris, California, has manufactured the largest and heaviest precast/prestressed concrete super girders the California Department of Transportation (CALTRANS) has ever set and placed for a bridge undercrossing.
General Contractor Security Paving, located in Sylmar, California, contracted Oldcastle to produce 20, 158-ft-long super girders for the Norwalk-San Antonio Bridge undercrossing section of the $1.6 billion Santa Ana Freeway South Corridor Improvement Project.
The super girders contain a wide flange beam design and are 8,500 psi in compressive strength. The bridge is being constructed in three stages and is comprised of prestressed girders supported by cast-in-place abutments. The beams have facilitated decreased construction time, improved structural performance and cost saving advantages.
The entire project extends nearly seven miles from the Los Angeles County/Orange County line to I-605 to widen the freeway, bridges and overcrossings adding one High Occupancy Vehicle (HOV) lane and one general purpose lane. Project completion is scheduled for late 2015.