KLEINFELDER INC

Kleinfelder Inc. specializes in geotechnical engineering and laboratory testing services for critical infrastructure projects, with a focus on seismic analysis, construction-phase engineering support, and quality assurance testing. Their technical expertise includes soil mechanics, foundation evaluation, bridge structural analysis, and laboratory-based material testing to ensure compliance with federal engineering standards. The firm delivers field and lab-based solutions for complex civil works, particularly in earthquake-prone regions, demonstrating proficiency in performance-based design, subsurface investigation, and construction quality control. Their ability to extend performance periods on ongoing projects indicates deep operational integration and sustained technical engagement with client teams. The contractor maintains a consistent relationship with the Department of Defense, providing engineering and testing services for military infrastructure projects, including bridge retrofits and regional civil works initiatives. Their work supports defense readiness through reliable geotechnical data and lab-certified material validation, aligning with DoD’s emphasis on resilient infrastructure and construction integrity. Kleinfelder Inc. operates primarily within NAICS 541330 (Engineering Services) and 541380 (Testing Laboratories and Services), positioning itself as a niche provider of field-to-lab engineering solutions for public infrastructure. They serve the defense and civil works markets with specialized capabilities in seismic evaluation, construction monitoring, and QA/QC laboratory testing, distinguishing themselves through applied field engineering and regulatory-compliant testing protocols. As a 2L entity headquartered in Rancho Cordova, California, Kleinfelder Inc. maintains a focused geographic presence in the Western U.S., with operational reach into major defense and infrastructure corridors. The company holds no federal certifications, relying instead on technical credibility and proven performance to secure repeat engagements. Their business model emphasizes long-term project support over transactional contracting, reinforcing trust with federal clients through sustained technical delivery.