
D'Appolonia Engineers
We create foundations for the future.
Pittsburgh, PA
Explore capabilities, project experience, and office locations to build your shortlist.

We create foundations for the future.
Pittsburgh, PA
Civil & Environmental Engineering
Pittsfield, MA

Engineering, Surveying, and Inspections
Mechanicsburg, PA

Over 50 years of making buildings and infrastructure systems work, preserving the environment, and achieving client service excellence.
Bohemia, NY

Innovative, high quality, and responsive engineering solutions
Columbia, MD+3

We Deliver Solutions You Can Stand Behind
Taylor, MI

Geotechnical Investigations and Test borings and rock coring.
Sayreville, NJ

Dedicated to Excellence. Strengthened by Experience.
Hollidaysburg, PA+2

A full-service firm committed to providing services for a Cleaner and Safer Tomorrow
Anchorage, AK

Marine Engineering and Waterfront Development Design.
Naples, FL
Civil Engineering and Surveying Services.
Federal Way, WA+2

Designing Today the Puerto Rico of Tomorrow
Guaynabo, PR

Professional Environmental Consulting Since 1987.
Orlando, FL

Civil Engineering and Environmental Engineering.
Eunice, LA+1

Industrial Hygiene and Asbestos Testing and Consulting.
El Paso, TX

Geotechnical Engineering and Environmental Engineering.
Dublin, OH

We Set Our Sights on Excellence
Bridgeton, NJ

Redefining Consulting for 30 Years
Tukwila, WA

People, Processes, Technology
Bakersfield, CA
Your Foundation for Success
Annapolis Junction, MD+20

Best in Class - Responsive | Innovative
Lexington, KY

Great Projects Start Here
Norcross, GA+1

Over 50 years of engineering excellence
Mt. Holly, NJ+1
Creating solutions. Helping people. Improving our world.
Albany, NY+1