
RJN Group, Inc.
Celebrating 50 Years of Engineering Intuition, Innovation, & Insights for Water Infrastructure
Downers Grove, IL
Explore capabilities, project experience, and office locations to build your shortlist.

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

Integrating Soil & Structure
King of Prussia, PA
Embrace The Shift

Bringing infrastructure projects to fruition through our talented team of technical professionals.

Solutions That Do More
Atlanta, GA

Committed to providing practical and economical environmental solutions with foremost attention to quality and liability protection.
St. Louis, MO

Geotechnical Engineering and Geotechnical Investigations.
El Centro, CA+1

Full-service environmental, geotechnical, civil, and surveying consulting
Bothell, WA+1

Planning and Transportation Engineering.
Randolph, VT+11

We build quality into every project.

Civil Engineering and Drainage Design.
Monroe, LA

Quality Service, Quality Value, Quality Relationships
Kearney, NE+4
People, Projects and Purpose
Pittsburgh, PA+2

Engineers - Planners - Scientists - Surveyors
North Canton, OH+2

Quality Engineering In Water & Wastewater Management
Little Rock, AR+1

Unwavering Quality. Reliable Results.
Pierre, SD+3

Bridging Communities, Building Resilience

Civil Engineering and Conceptual site planning and layout.
Covington, LA

Multifaceted civil and construction engineering services
Highland, IN

Professional Engineering Services
Saint Clairsville, OH+5

Environmental Health & Safety Training and Consulting Services

Storage Tank Management and Portfolio Management and Due Diligence.
Royersford, PA+2
Engineering design, management, and consulting services for the complete project life cycle.
Caguas, PR

Forensic Investigations and Investigating Building Failures.
Westford, MA