From civil to structural, California’s top engineering firms power the state’s infrastructure and construction success. These companies deliver precise planning, innovative solutions, and technical expertise for every project stage.
San Francisco-based structural engineering leader specializing in seismic retrofits, hospitals, higher education, and large-scale commercial construction.
Website: degenkolb.com
Contact: (415) 392‑6952
Multidisciplinary firm offering structural and civil engineering services for transportation, civic, education, and healthcare projects.
Location: Los Angeles, San Francisco, Oakland
Website: kpff.com
Contact: (213) 622‑1800
San Francisco-headquartered global firm known for bridge, highway, and transit engineering with landmark projects across California.
Website: tylin.com
Contact: (415) 291‑3700
Pasadena-based engineering and consulting giant providing environmental, water, transportation, and infrastructure services.
Website: tetratech.com
Contact: (626) 351‑4664
Global engineering and construction firm founded in California — delivering complex infrastructure, industrial, and energy projects.
Location: Irvine, CA (regional)
Website: fluor.com
Contact: (469) 398‑7000
San Diego–based engineering and environmental firm delivering solutions in civil infrastructure, transportation, and construction management.
Website: kleinfelder.com
Contact: (619) 831‑4500
Sacramento-headquartered global firm leading in seismic engineering, disaster resilience, and structural innovation.
Website: miyamotointernational.com
Contact: (916) 371‑9720
Full-service engineering firm offering structural and civil services with a focus on entertainment, maritime, and infrastructure.
Location: West Coast operations in California
Website: mgmclaren.com
Contact: (866) 625‑2736
Bay Area–based civil engineering and project delivery firm supporting public infrastructure, water resources, and transportation projects.
Website: weareharris.com
Contact: (925) 827‑4900
Multidisciplinary engineering firm offering bridge, highway, utility, and construction services across California.
Website: consoreng.com
Contact: (619) 321‑1875