
RJN Group, Inc.
Celebrating 50 Years of Engineering Intuition, Innovation, & Insights for Water Infrastructure
Downers Grove, IL
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Celebrating 50 Years of Engineering Intuition, Innovation, & Insights for Water Infrastructure
Downers Grove, IL

Integrating creativity and experience with reliable results for drinking water and wastewater projects

Roads and Bridges and Multi-lane Roadway Design.
Hattiesburg, MS

Engineering Excellence Since 1956
Boulder, CO+5

Today's Innovation, Tomorrow's Impact.
Baton Rouge, LA

Award-Winning, Cost-Effective Engineering Solutions
Indianapolis, IN

Construction Materials Testing and Load potential testing.
Augusta, GA
Geotechnical Engineering and Geotechnical Site Investigation.
Tempe, AZ

We Engineer Client Success
Van Buren, AR+3

Training Leading to Efficiency

Engineering Solutions, Together
Houston, TX+1

Serving our Clients and the Environment Since 1993
Latham, NY
a better world tomorrow, through engineering today
Paintsville, KY

Innovative. Communicative. Results Driven.
Riverside, CA
Engineering with Focus
Hillsborough, NJ

Civil Engineering and Construction Management and Inspection.
Ferriday, LA+3

Advancing sustainable and resilient communities
Columbia, MD

Solving Complex Engineering and Geology Challenges Since 1993
Buffalo, NY

Define. Design. Deliver.
Jackson, WY+2
Geotechnical Engineering and Geotechnical Investigations.
Riverside, CA+1

Surveying and Engineering.
Ocean View, NJ

Elevate Your Ground Game
Hartford, CT

Innovative Engineering and Real World Solutions
Memphis, TN
Quality Civil & Environmental Engineering
Jacksonville Beach, FL+1