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Addressing the Challenges of Climate Change

Here's How

We apply scientific and engineering principles to solve the world’s challenges — starting with yours. Whether we’re focusing on the design, construction and performance of buildings or expanding into new disciplines, we never limit ourselves, applying our expertise to all types of projects across a range of industries.

Thornton Tomasetti
Year Founded 1949

Offices Worldwide 40+
Projects 90,000+

Countries Worked In 150+
Languages Spoken 50+

LEED Professionals 215+

What We Do

Whatever issue you face, we have your solution. We get to the heart of every problem—digging deep to understand its intricacies and nuances, so we can help you achieve your goals, together. 

Geostructural Engineering

Our geostructural engineers have the insight and expertise to ensure the success of all your below-grade design and engineering projects.

Our Work

We are conquering complex problems - on six continents - and finding better ways to tackle even the most straightforward undertakings.

Courtesy Foster + Partners

Recent News & Insight

Venue Professional: What's Going Up
March 21, 2025
It is fair to say that the word “iconic” gets tossed around more than it should, but when it comes to Caesars Superdome in New Orleans, it describes a stadium that has hosted most of the significant sporting and non-sporting events one can conjure up.

Roger Weld Joins The Transportation Team
January 23, 2025
Roger, who has more than 30 years of experience in the planning and design of efficient and sustainable infrastructure and public spaces, recently joined our Transportation practice in New York.