Find the right engineering partner.

Celebrating 40 years of Excellence

Shaping the built environment with precision, creativity, and purpose since 1945

York, PA+8

Creating solutions. Helping people. Improving our world.

Albany, NY+1

Professionals Providing Solutions

Mobile, AL

Comprehensive civil engineering, structural engineering, and land surveying services

Garden City, ID

It's more than architecture, it's about building your legacy.

Charleston, WV+3

ADC's Track Record Speaks for Itself

Hanahan, SC+2

Future Focused Engineering

Washington, DC

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

Bohemia, NY

Designing and Building Better, Together.

Jacksonville, FL

We create thoughtful, livable spaces.

New York, NY

Hawai'i Structural Engineering

Kailua, HI+1

Structural Engineering for the Pacific Region

Barrigada, GU

Innovative Ideas. Engineering Excellence.

Pearl City, HI

A Turnkey Planning and Design Firm

Murrells Inlet, SC

Engineering expertise and superior client service

Cheyenne, WY+3

Providing timely, cost-effective, sustainable engineering solutions through long-term relationships

Springfield, IL+3

Reliable. Responsive. Solutions.

Irvine, CA+5

Creative solutions fueled by passion, founded on ethics.

Quartz Hill, CA

Trusted Design and Engineering Solutions for Federal Projects

Boston, MA+2

Full-service structural engineering

Honolulu, HI+1

Changing the Way the World Produces Power.

Eden Prairie, MN