PB&A performed a Value Engineering Design for our Clients, AECOM for the Permanent Retaining Wall that would serve as the Earth Retention System for the Direct Access Road (DAR), taking traffic underneath the I-5 Freeway and onto the 805 Freeway in North County San Diego.  The PB&A design saved the contractors $20m over the previous design in their bid to get the job.

This was the first time that Caltrans had approved construction for a permanent Soil Nailed Wall that would serve as support for a live freeway overhead.