Principal Engineering, Inc.
Improving the PRINCIPAL Infrastructure of our World
Explore capabilities, project experience, and office locations to build your shortlist.
Improving the PRINCIPAL Infrastructure of our World

Diverse Capabilities, Flexible Solutions

Enduring Design & Engineering for the islands
Hagatña, GU+1

We Make a Difference
Louisville, KY+7

Leveraging the Untapped Construction & Engineering Potentials
Salisbury, MD

Consulting Engineering and Land Surveying
Marlborough, MA

Innovative Solutions to Strengthen Communities
Rogers, AR
Civil engineering, environmental design, and professional land surveying services since 1989.
Savannah, TN

Geotechnical Engineering and Geostructural Engineering.
Washington, DC

Creating Solutions Is Our Passion
Cincinnati, OH+5

Building Commissioning and Design and Submittal Analysis.
Pittsburgh, PA
Environmental Remediation and Water Resources.
Seattle, WA+8
Contamination Site Assessment and Cleanup and Infrastructure Planning, Engineering, and Design.
Tallahassee, FL

Largest Full-Service Architecture & Engineering Firm in Western MA
Dalton, MA

Experience Matters.
Upland, CA

Trusted. Timeless.
Program Integration for Complex Infrastructure at Scale.
Washington, DC+1

Connecting land, water, and innovation
Ft. Lauderdale, FL+2
Practical Solutions. Designed to Last.
Tualatin, OR

Storage Tank Management and Portfolio Management and Due Diligence.
Royersford, PA+2

We Design Infrastructure For All.
Birmingham, AL

Hydrology and Hydraulics and Flood Hydrology Analysis.
Sacramento, CA
Quality Civil & Environmental Engineering
Jacksonville Beach, FL+1

Environmental Engineering & Consulting by Combining Prudence with Efficiency