Frederick, Seibert & Associates, Inc.
Excellence in Customer Service
Hagerstown, MD+3
Explore capabilities, project experience, and office locations to build your shortlist.
Excellence in Customer Service
Hagerstown, MD+3

Texas Civil Engineering Professionals

Civil Engineering and Site Evaluation and Design Support.

Geotechnical & Environmental Engineering Consultants

Master Site Planning and Residential Development.
Jacksonville, FL

Professional Civil Engineering Services Across the Pacific Northwest
Bellingham, WA

Respect. Integrity. Excellence.
San Antonio, TX

Vision, integrity and technical expertise
Astoria, NY+1
Civil Engineering and Stormwater management and drainage.
Urbana, IL

Where Our Structure Helps Build Yours.
Dothan, AL+1

Results With No Excuses
Laurel, MD+4

Engineering Solutions for a Changing World.
Havelock, NC+2
A Full-Service Consulting Engineering Firm
Great Falls, MT+8

Projects are more than just job numbers. They are Places. Communities. Foundations. Legacies. Life.
Savannah, GA

Creative Solutions…Exceptional Service.
Chester, CT

Civil & Structural Engineering, Design Services, General Contracting, and Construction Management
St. Louis, MO+2

Overcoming Challenges Through Innovation

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

Engineering the Future
El Paso, TX

Surveying the Pulse of Acadiana and Engineering its Future Since 1957
Lafayette, LA

Engineering a Sustainable Future with Safe, Innovative Solutions
Naperville, IL
Enhancing communities and the built environment.
San Francisco, CA+1

Civil Engineering and Residential Subdivisions and Custom Homes.
Saratoga Springs, UT

Practical and innovative environmental, engineering, and energy solutions
Sagamore Beach, MA