As a Principal Engineer, Mr. Yoshii provides principal oversight on geotechnical evaluations and materials testing and inspection for residential, commercial, and public facilities, including correctional facilities, schools, hospitals, highways, railroads, pipelines, and bridges; oversees geotechnical analyses including slope stability analyses, flexible and rigid pavement design, and underground pipeline design; reviews geotechnical reports, and provides geotechnical design parameters and recommendations for grading and earthwork, shallow and deep foundations, retaining structures, and in‑situ ground remediation; provides supervision and technical support to project‑level engineers and geologists; as well as provides expert witness services on litigation projects.

Professional Experience

^{Construction Materials Testing • Geotechnical Design • Laboratory Testing}

Kurt YOSHII is a National Business Development Director at SOCOTEC, with more than 34 years of industry experience. He joined SOCOTEC in 2025 through the acquisition of Ninyo & Moore, where he spent over 30 years, developing expertise in construction materials testing, geotechnical design and laboratory testing.

Qualifications

Education

B.S. Civil Engineering – University of California, Berkeley – 1990

Practice Areas

Geotechnical Design
Foundation Engineering
Slope Stability Analysis
Materials Testing and Construction Inspection
Seismic Evaluations
Pavement Design
Retaining Structures
Laboratory Testing
Expert Witness Services

Registrations

PE 54759 (California)
GE 2508 (California)
PE 14274 (Nevada)
PE 379182202 (Utah)
PE 48007 (Colorado)

Affiliations

American Council of Engineering Companies
American Public Works Association
American Society of Civil Engineers
Asian American Architects/Engineers Association
Society for Marketing Professional Services
Womens Transportation Seminar
American Concrete Institute
American Society for Testing and Materials
Construction Management Association of America

Representative Projects

AIRPORTS

Los Angeles World Airports, Los Angeles International Airport (LAX) Terminal 1.5 Design Project, Los Angeles, CA
John Wayne Airport, On-Call Services, Orange County, CA

PORTS

Port of Los Angeles, Red Car Trolley Building, Wilmington, CA
Port of Long Beach, On-Call Geotechnical Services, Long Beach, CA

RAIL

Brightline West (formerly XpressWest) High-Speed Railway, Victorville, CA to CA-NV State Line
Metro, Regional Connector Transit, Los Angeles, CA

WASTE/WASTEWATER

South Coast Water District, On-Call Geotechnical Services, Orange County, CA
Orange County Sanitation District, On-Call Geotechnical Services, Orange County, CA

PUBLIC SCHOOLS

University of California Berkeley (UCB), The Gateway Project, Berkeley, CA
Los Angeles Unified School District, On-Call Services, Los Angeles, CA
Long Beach Unified School District, Richard D. Browning High School, Long Beach, CA

HOSPITALS

VA Greater Los Angeles, VA West Los Angeles Tower Replacement, Los Angeles, CA
Los Angeles County (LAC) and University of Southern California (USC) Medical Center, Los Angeles, CA