- California High-Speed Rail Authority
- Central Valley
- Corsan-Corviam Construccion S.A.
- Dragados USA
- FCC Construccion S.A.
- Ferrovial Agroman US Corp
- Flatiron West Inc.
- Inc.
- Kern
- Parsons Transportation Group Inc.
- Sacramento
- Salini Impregilo S.p.A.
- Security Paving Company
- Shafter
- Tulare
- Tutor Perini Corporation
- Wasco
- Zachry Construction Corporation





