Steve Freihon/Related-Oxford
New York, New York
Chicago
600 W Fulton Street
Suite 705
Chicago, IL 60661
United States
Phone: +1.312.596.2000
Fax: +1.312.596.2001
Our Team
Featured Chicago Projects
Related Projects
Featured Project
Willis Tower Repositioning Expanding the retail and guest experience at one of Chicago's most popular tourist destinations.
Featured Project
James Cancer Hospital and Solove Research Institute Vertical plans for this hospital – one of the tallest in the US – rose to new heights thanks to a last-minute, $100 million grant.
Featured Project
Pittsburgh Airport Terminal Modernization The modern world is on the move. To keep up with millions of air passengers today means building an airport for tomorrow.
Featured Project
Jeddah Tower We combine inspired engineering and regional knowledge to reach new heights in ultratall building design.
Featured Project
Ascent The tallest mass timber structure in the world upon completion, Ascent rises 25 stories in Milwaukee.
Featured Project
Arkansas Museum of Fine Arts A reimagined museum blossoms in downtown Little Rock, thanks to a complex structural design developed through extensive 3D modeling.
Featured Project
Stockholm Central Station Overbuild Eighty percent of Sweden’s train trips start or end at Stockholm Central Station, which is being transformed into a sustainable mobility hub that spans the tracks.Additional Projects
Chicago News
Insight
How Distributed Energy Resources Are Reshaping Utility PlanningFebruary 04, 2026
Building more infrastructure isn’t always the smartest solution. Distributed energy resources (DERs) offer utilities a flexible, lower-risk way to meet growing demand while rethinking traditional approaches to grid expansion.
News
Jeddah Tower 2025 ProgressJanuary 06, 2026
Jeddah Tower advanced rapidly in 2025, nearing 80 floors as it moves toward becoming the world’s tallest building at over 1,000 meters tall.
News
Climate Risk Mitigation for Resilient DevelopmentDecember 18, 2025
Climate risk is no longer a future consideration—it is shaping today’s real estate performance, insurability and valuation.
Insight
New Grid Shell Design Method ExplainedDecember 16, 2025
New research from Thornton Tomasetti and the University of Tokyo introduces a faster, architect-friendly method for designing complex grid shell structures.
Insight
How Hail Affects Roofing MaterialsOctober 30, 2025
Hailstorms cause billions of dollars' worth of damage to roofing systems, with materials like shingles, metal, tile and solar panels facing risks like cracking or denting. Our hailstorm damage forensics team uses advanced tools to assess damage and recommend resilient materials and prompt inspections for effective repairs and insurance claims.
News
Ryan Field Tops OutOctober 23, 2025
The new Ryan Field tops out in Evanston, Illinois, advancing accessible, sustainable and community-centered design for next-generation collegiate venues.
News
Phase Two of the Concourse D Widening Project at Atlanta International Airport OpensSeptember 19, 2025
The expanded concourse will increase capacity and greatly improve the passenger experience.
News
Ascent Featured on "How Did They Build That?"August 29, 2025
The world’s tallest mass timber building is Ascent, a 25-story residential tower consisting of a lightweight system of cross-laminated timber and glulam over a concrete podium.
News
Pittsburgh Int'l Airport Featured in Modern Steel ConstructionAugust 13, 2025
A modernization program will connect passengers directly and provide a more comfortable arrival and departure process. The project includes renovations to existing airside concourses to seamlessly connect them to the new terminal.
News
Karuruma Trail Bridge CompletedJuly 28, 2025
Thornton Tomasetti partnered with Bridges to Prosperity to construct a 60-meter trail bridge over the Akaruruma River in Rwanda, completed ahead of schedule. The bridge connects over 5,600 people across five communities to essential services, enhancing safety and livelihoods.
News
Hiva Nasiri Shares Insights with FacilitiesnetJuly 25, 2025
Thornton Tomasetti Vice President Hiva Nasiri shares insights on risk assessment mistakes facility managers make and is featured as the opening quote in Maura Keller's latest article for Facilitesnet.
News
Construction Underway On Karuruma Trail BridgeMay 22, 2025
Thornton Tomasetti volunteers are heading to Rwanda to help complete a 60-meter suspended bridge that will provide safe, year-round access for over 8,600 residents in two rural communities.
News
Innovative Approach Helps Atlanta Airport Grow With The TimesMay 14, 2025
The world’s busiest airport is growing. The new Concourse D at Hartsfield-Jackson Atlanta International Airport will be 75% larger and able to accommodate 1,000 more passengers at any given time.
News
Hiva Nasiri Joins Applied Science PracticeApril 18, 2025
An expert in the design of power systems and energy planning, Hiva Nasiri recently joined our Applied Science practice to support our electrification and energy expansion efforts.
News
2025 Major League Baseball Season Gets UnderwayMarch 27, 2025
The wait is over! Today is the official start of the Major League Baseball season.
Insight
Five Approaches for Resilient Healthcare DesignAugust 16, 2024
Structural engineers play a vital role in the success of healthcare projects, which often have unique design considerations.
News
Northwestern University’s New Ryan Field Now UnderwayAugust 09, 2024
Ground has broken on a redevelopment of Northwestern University’s Ryan Field in Evanston, Illinois.
News
Roundtable: Decarbonizing Today for Tomorrow's World, and...June 22, 2023
What does decarbonization entail and what does its future look like?
News
Play Ball!March 30, 2023
It’s spring and that means baseball is back! At ballparks everywhere ground crews are prepping the turf and chalking the baselines as coaches finalize their starting lineups.
News
2020 Showcase: Responding to the PandemicMay 09, 2021
When COVID-19 cases surged in the spring of 2020, and again last winter, our engineers, scientists and programmers lent a hand. Here are a few of the ways we helped our clients and communities meet some immediate challenges.
News
2019 Green Offices UpdateJuly 27, 2020
In 2019, 87 employees – representing all but our smallest offices – served as local corporate responsibility advocates.