Kleinfelder has been connecting great people to the best work since 1961.

We are a responsive team of engineers, scientists, and construction professionals providing solutions that improve our clients’ transportation, water, energy, and other private infrastructure.

Our ecosystem mindset facilitates collaboration, harnessing the collective ingenuity of Kleinfelder and our partners, to deliver the right solutions to our clients, every day, on every project.

Kleinfelder consistently ranks amongst the leading engineering, design, construction management, construction materials inspection and testing, and environmental professional services firms.

Engineering News-Record (ENR)

#21 – Top 50 Construction Management Firms

#26 – Top 50 Program Management Firms

#26 – Top 100 Professional Services Firms

#34 – Top 100 Pure Design Firms

#45 – Top 500 Design Firms

#76 – Top 200 Environmental Firms

#88 – Top 150 Global Design Firms

#184 – Top 225 International Design Firms*

*Project work conducted outside firm’s home country