Joseph B. Callaghan, Inc.
Your Structure. Our Solution.
Philadelphia, PA+1
Explore capabilities, project experience, and office locations to build your shortlist.
Your Structure. Our Solution.
Philadelphia, PA+1

Your structural engineering partners for environmental infrastructure
Nationwide Leader in Structural & Construction Engineering
Colorado, CO

Proven, Grounded Experience
Delivering Sound, Practical Solutions
Houston, TX
Superior civil and structural engineering services delivered with honesty and integrity

Pursuit of Excellence

Establishing WHY Since 1966

MEP Engineering and Plumbing Design.
Centerville, OH
Specialists in Non-Invasive Diagnostics
St. Louis, MO

Full-service consulting engineering practice specializing in MEP, fire protection, and LEED-certified designs.
Fort Lauderdale, FL+1

Southwest Florida's Best Choice for Engineering Services
Fort Myers, FL

High-precision testing of components, pressure vessels and energetic devices
Better Risk Management Starts Here
San Antonio, TX

Structural solutions for the built environment
Grandville, MI
Before you buy, Call HEI
Houston, TX

The Nondestructive Experts
Wheat Ridge, CO+1

Serving Owners, Architects, and Contractors across New England since 2000.
North Easton, MA
Motor Vehicle Accident Reconstruction and Vehicle Speed Assessment.
Raleigh, NC

Simply better.
Uniontown, OH+1

Civil engineering, surveying, forensic engineering and construction management in Minnesota
Kasson, MN+1

As in real life, complex engineering designs demand a pragmatic approach.
North Augusta, SC+1
Civil/Structural Engineering + Professional Services

Advanced Geotechnical, Subsidence, and Forensic Engineering
St. Louis, MO+2