
Three i Design
Imagination. Innovation. Integrity.
Evansville, IN
Explore capabilities, project experience, and office locations to build your shortlist.

Imagination. Innovation. Integrity.
Evansville, IN

Practical Structural Engineering Solutions
Improving the PRINCIPAL Infrastructure of our World

Structural Engineering and Bridges.
Birmingham, AL

Engineering stronger communities.
Salt Lake City, UT+1

Civil Engineering and Roadway Design.
Vero Beach, FL+2

Possibilities Designed Delivered

Building Excellence From the Ground Up
Santa Ana, CA

Done Quickly. Done Right. And for the Best Value.
Manvel, TX+2

Build on what we know.
Appleton, WI+12
Engineering project vision into reality
Pasadena, CA+1

Structural Engineering and Forensic Engineering.
Phoenix, AZ
Real Solutions to Real Engineering Challenges
Virginia Beach, VA
Structural Engineers Bringing Innovative and Responsive Solutions to Life
Des Moines, IA+3

Structural Engineering and Mass Timber.
Golden, CO+5
Structural Engineering and High-Rise Building Design.

Engineering, Reimagined
Bismarck, ND

Structural Engineering and Retaining wall design (reinforced concrete and geosynthetic-stabilized earth).
North Kingstown, RI

Civil Engineers & Professional Land Surveyors
Biloxi, MS

Responsive service and cost-effective structural engineering solutions.

Project Management and Clerk-of-the-Works and Forensic Engineering.
Richmond, VA

Geotechnical Engineering and Foundation and Slab Engineering Design.
Fresno, CA

Innovative and Practical Engineering Solutions
Milwaukee, WI
Forward, Together
Topeka, KS