SR-60 / SR-91 / I-215 Interchange Improvement

This complex, three-year design sequencing project consisted of roadway construction engineering and inspection services on an as-needed basis to support the development and construction of widening the I-215 freeway from six lanes to eight lanes. The project also included constructing an auxiliary lane, truck by-pass and climbing lane; improving mainlines and interchanges; widening existing bridges; constructing a new bridge, as well as retaining walls and sound walls on SR-91; constructing a retaining wall; and relocating the on-ramp on SR-60. CALTROP utilized local expertise to support Caltrans District 8 on the project.

TRANNY – Public Outreach Program of the Year Award, 2009
WTS – IE – Innovative Transportation Solutions Award, 2008

LOCATION: San Bernardino, CA
CLIENT: Caltrans District 8
PROJECT VALUE: $325 million


  • Design Sequencing
  • Freeway Construction and Widening
  • New Bridge Construction
  • Sound Wall and Retaining Wall Construction


  • Inspection
  • Office Engineering
  • Construction Administration and Support
  • Construction Schedule Review
  • Monitoring and Enforcing Labor Compliance
  • Potential Claim Review
  • SWPPP Compliance