Owner: City of Santa Clarita, CA CALTRAN Value Engineering Proposal

Engineering Team: TetraTech Inc, Ninyo & Moore Geotechnical, & David A  Hall Structural Engr.

Contractor: Phase 1: MSE Retaining, Phase 2: Security Paving, Phase 3: C.A. Rassmussen

Details: Six lane highway grade separation with a maximum height of ~40 feet. The three phases total approximately 80,000 sq ft of retaining wall.

Description: Back-to-Back structural retaining walls providing six lanes of traffic support and approach to overpass with traffic barrier and light standards cantilevered over the wall face. The project incorporated geo-grid as soil reinforcement instead of steel straps allowing the potentially corrosive on-site fill materials to be used which resulted in significant cost savings.