Our Work
Since 1961, Kleinfelder has partnered with clients on both large and small engagements to transform ideas and visions into award-winning projects. Learn more about our work across the specific Markets, Services and Locations we support.
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Former Great Northern Paper Administration Building and Engineering & Research/Pilot Plant









































Portland Area Widening and Safety Improvements for I-95




































































Darlington Point Solar Farm: Environmental Approvals, Design, & Construction Services
























Managing Naturally Occurring Asbestos (NOA) During Construction – American Canyon High School





Massport Disaster Infrastructure Resiliency Plan and Critical Asset Resiliency Project





















Optimizing Soil Remediation to Reduce Distribution Center Land Development Costs




















Protected: Reverse Osmosis Water Treatment System for Automotive Part Manufacturer
















































Alcatraz Island Geotechnical Evaluation and Shoreline Erosion Study














































































































