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

Planning & Engineering Consulting and IT Consulting & Research.
Fargo, ND

Engineering & Land Surveying Serving the Hudson Valley Since 1956
Kingston, NY

Serving South Mississippi Since 1971
Bay St. Louis, MS

Delivering Superior Service and the Highest Standards of Quality Since 1986.
Grapevine, TX+1

Innovative Civil Solutions
Timonium, MD
Civil Engineering for a Resilient New York
New York, NY

Integrated Facility Maintenance Services
Herndon, VA+1

Structural, civil, geotechnical and forensic engineering in Owensboro
Owensboro, KY

Focus on Quality. Multi Discipline. Culture of Caring.
Phoenix, AZ+6

Civil engineering, land surveying, and landscape architecture in Iowa
Ankeny, IA
A Unified Approach to Excellence

Creating Stronger Communities
Beckley, WV+6

Smart solutions in sustainable water infrastructure project delivery
San Diego, CA
Providing Consulting Engineering and Land Surveying across Southwest Oklahoma
Altus, OK

The Right Solutions Focused on You
Superior, WI+2
Engineered For Life
Ridgefield Park, NJ

Civil Engineering Solutions to Meet Your Unique Needs.
Lee's Summit, MO

Civil Engineering Services in Idaho & Wyoming
Driggs, ID
Designing smart to make today better and tomorrow brighter
Bellevue, WA

Fully integrated engineering and business services for the offshore, inland, and marine industries.

Southeast USA Premier Civil Engineering Firm
Lexington, KY

Define. Design. Deliver.
Jackson, WY+2
a better world tomorrow, through engineering today
Paintsville, KY