Thornton Tomasetti

Thornton Tomasetti We apply scientific and engineering principles to solve the world’s challenges — starting with yours.

Thornton Tomasetti provides engineering design, investigation and analysis services to clients worldwide on projects of every size and level of complexity. We are a 100 percent employee-owned organization of engineers, architects, scientists, and sustainability and support professionals collaborating from offices across North America and in Asia-Pacific, Europe, Latin America and the Middle East.

We focus on providing a diverse suite of integrated services and leading innovation in our industry to ensure the continued success of our clients.

06/08/2026

The Epstein Family Amphitheater at UC San Diego combines complex geometry with high-performance structural engineering in a compact outdoor performance venue.

Working with Safdie Rabines Architects, Thornton Tomasetti provided structural design services for the 2,850-seat amphitheater. The project consists of a stage covered by a 46-foot-tall, ETFE-clad diagrid steel shell with concrete back-of-house facilities, 3,000 square feet of subterranean restrooms and a 400-square-foot ticketing and vending building. It includes 98,000 square feet of landscape and 85,000 square feet of parking and site improvements.

The steel shell features a curved audience-facing wall, vegetated roof and integrated stage canopy. Engineered to realize the architect’s vision of a lightweight form emerging from concrete massing, the design conceals critical connections and creates the appearance of a delicately balanced form. The team relied on proprietary digital tools to accelerate iterative design and coordinate between analytical and BIM models, enabling tight integration between architectural intent and structural behavior.

The venue will be featured on The American Institute of Architects Conference on Architecture & Design 2026 tour this Wednesday: https://conferenceonarchitecture.com/tours/

As the favorites and other contenders gear up for the 158th running of the Belmont Stakes this Saturday, Belmont Park’s ...
06/05/2026

As the favorites and other contenders gear up for the 158th running of the Belmont Stakes this Saturday, Belmont Park’s redevelopment is entering the home stretch.

This year’s final leg of horse racing’s Triple Crown will take place at Saratoga Race Course in upstate New York, while fans can look forward to the Belmont’s return to its traditional Long Island home in Elmont in 2027.

Thornton Tomasetti provided structural engineering and façade consulting services to Populous for the modernization project, which includes demolition of the existing 1.3-million-square-foot grandstand and construction of a new facility. Sitewide upgrades feature expanded infield access via new tunnels, nearly five times more public green space, and improvements to the paddock, back lawn, parking areas and lighting systems.

At the center of the transformation is a 275,000-square-foot, five-story clubhouse with a cantilevered canopy. The venue will seat approximately 7,500 spectators and include club and dining spaces, private suites and indoor-outdoor hospitality areas. New outdoor amenities include a redesigned paddock centered around Belmont Park’s iconic white pine tree, along with increased capacity for major events. NYRA is the developer.

Thornton Tomasetti was also the structural engineer for earlier phases of the Belmont Park redevelopment, including UBS Arena and the Belmont Park Village retail project.

Once completed later this year, the new Belmont Park is expected to redefine the race-day experience, blending modern design with more than a century of tradition and reaffirming its place among the sport’s most iconic venues.

06/05/2026

It’s not every day that a pedestrian bridge takes a walk.

The removal of the Diplomat Resort pedestrian bridge in Hollywood, Florida, last weekend was a coordinated engineering and demolition effort involving structural planning, real-time monitoring and careful ex*****on. The 25-year-old, approximately 200,000-pound bridge was moved for disassembly to keep traffic flowing on the busy highway.

Thornton Tomasetti served as engineer of record on behalf of the owner, Trinity Investments, working alongside the Hardy Group, PCL Construction and Fagioli S.p.A.. We developed temporary retrofit plans to introduce redundancy into fracture-critical members, enhancing safety during the lifting and transport operations.

Using self-propelled modular transporters, the bridge was safely lifted, “walked” off-site and set down for disassembly. Thornton Tomasetti's Forensics practice designed and implemented a real-time instrumentation and monitoring program to track strain, rotation and acceleration throughout the move. Our team continuously reviewed the data and compared measured responses with predictions from the bridge's finite element model, validating structural performance and confirming demands remained within anticipated limits during critical phases of transport.

Supporting these efforts, engineers integrated finite element analysis, high-resolution point-cloud surveys to verify as-built geometry, nondestructive testing to assess structural condition and field instrumentation to capture actual behavior. Together, these datasets formed a data-rich digital twin of the bridge, enabling informed decision-making and risk management throughout planning, transport and removal.

06/03/2026

As the Athletics look to move up in MLB's American League West standings, their new home stadium in Las Vegas has reached a major milestone. Crews lifted the first 200-ton arch truss segment into place on Monday, marking the start of roof construction on the 33,000-seat ballpark.

The stadium’s long-span roof features five overlapping curved surfaces designed to look like baseball pennants, supported on freestanding steel arch trusses that will span nearly 700 feet across the playing field. Thornton Tomasetti is the structural engineer for the stadium, working in collaboration with the design team of BIG - Bjarke Ingels Group and HNTB. Mortenson-McCarthy Building Companies, Inc. joint venture is the construction manager.

The roof structure will reach 290 feet above the playing field. The park will also feature one of the world’s largest cable-net glass façades in the outfield, which will provide expansive views of the famed Las Vegas Strip.

In addition to structural design, we are providing construction and façade engineering, connection detailing, and waterproofing and façade access services. The stadium is scheduled to open for the 2028 baseball season.

Long Island City’s skyline has a new peak with The Orchard LIC, a 70-story residential tower that has opened as the tall...
06/02/2026

Long Island City’s skyline has a new peak with The Orchard LIC, a 70-story residential tower that has opened as the tallest building in Queens, New York.

Designed by Perkins Eastman with structural engineering by Thornton Tomasetti, the 823-foot-tall tower developed by BLDG Management Co., Inc. occupies a full-city-block site above an active rail tunnel. A 10-foot-thick reinforced concrete mat foundation spans the tunnel, while transfer girders more than 17 feet deep distribute loads to a six-story podium containing amenity and service spaces.

The building rises into a slender tower with 824 apartments featuring open layouts, high ceilings and oversized windows. A high-strength concrete belt wall between the 37th and 38th floors and a sloshing tank damper on the 69th floor help reduce lateral movement and improve occupant comfort.

More than 100,000 square feet is devoted to amenities, anchored by a 60,000-square-foot landscaped “backyard” on the third floor. The outdoor space features an apple orchard, pathways, lawns, recreational facilities and a resort-style pool. Additional amenities include an indoor basketball court and lap pool, fitness and coworking spaces, dog wash, 207-vehicle parking garage, 13,000 square feet of street-level retail and a full-floor Sky Lounge on the 70th floor with panoramic city views.

The façade combines brick, glass and metal—with vertical detailing that emphasizes the tower’s height—referencing Long Island City’s industrial architectural heritage.

Even a “quiet” hurricane season can be a costly one. The National Oceanic and Atmospheric Administration (NOAA) is forec...
06/01/2026

Even a “quiet” hurricane season can be a costly one. The National Oceanic and Atmospheric Administration (NOAA) is forecasting a below-normal 2026 Atlantic hurricane season, with 8-14 named storms, 3-6 hurricanes and 1-3 major hurricanes, influenced in part by expected El Niño conditions. But for building owners and facility managers, it’s not how many storms occur but the impact a storm can have.

A lone landfall event can trigger roof failures, façade damage, flooding, rooftop equipment loss and extended operational disruptions. Property vulnerability, not seasonal outlooks, drives financial losses.

Preparedness must start well before a storm forms and needs to continue after it passes. Pre-storm assessments of roofs, drainage, façades and critical systems can reduce surprises, while fast post-storm engineering evaluations can be the difference between controlled recovery and cascading damage.

Read our latest blog in which we break down the key vulnerabilities, building systems most at risk and what owners should be doing now to stay ahead of the 2026 season: https://tt-heres-how.com/2026HurricaneSeasonPreparedness

The expansion of Washington’s Spokane International Airport Concourse C has officially landed. A ribbon cutting ceremony...
05/29/2026

The expansion of Washington’s Spokane International Airport Concourse C has officially landed. A ribbon cutting ceremony was held this week to mark the completion of a 140,000-square-foot addition and an extensive renovation of the terminal building, which represents the first component of the airport’s multi-phase Terminal Renovation and Expansion (TREX) program. The new terminal was designed by Alliiance and WAG Architects with Thornton Tomasetti as the structural engineer. A joint venture of Garco Construction and Q&D Construction was the general contractor.

The work included upgraded passenger boarding bridges, ticketing counters and gate amenities. The next phase of the TREX program will focus on the 255,000-square-foot central hall facility that will consolidate the airport’s two existing terminals. It is expected to break ground early next year.

05/28/2026

The pursuit of ever-taller skyscrapers—such as Jeddah Tower, the first man-made structure to reach 1 kilometer—is pushing the limits of modern construction. At this scale, success depends not only on design, but also on whether existing technologies, materials and construction methods can realistically support projects of this magnitude.

To meet these challenges, architects, engineers, construction specialists and logistics experts are developing new systems and delivery strategies to create structures that are both efficient and buildable.

Managing Principal John Peronto and KPF Principal Mustafa Chehabeddine will discuss Jeddah Tower and innovations in supertall and hypertall buildings at “Above Clouds,” part of the inaugural DMD lecture series “Flirting with Gravity,” on June 6 at the Grand Hall Ho Guom Opera in Hanoi, Vietnam.

More information: https://docs.google.com/forms/d/e/1FAIpQLScXF5vxJbCRGxIYZYtwo6TMCudGchCpNhAzx_Xea2GGdnEqBQ/viewform

Rising above highway ramps, elevated streets and layered transit infrastructure, 10 World Trade redefines what a commerc...
05/27/2026

Rising above highway ramps, elevated streets and layered transit infrastructure, 10 World Trade redefines what a commercial tower can be in Boston’s evolving Seaport District.

Designed by Sasaki for the Massachusetts Port Authority and developer Boston Global Investors, with Thornton Tomasetti providing structural design, vibration control and construction engineering services, the 550,000-square-foot, mixed-use tower converts a former parking lot into a transit-oriented development with life-science labs, offices and public space. Completed in 2025, the 252-foot-tall, 17-story building—limited in height due to its proximity to Logan International Airport—recently received a 2026 Award of Excellence from the Council on Vertical Urbanism in the structure category.

The site is constrained by a bus rapid transit tunnel beneath the footprint. A steel arch system transfers loads to the building’s corners, creating a three-story, 42-foot-tall, column-free Great Hall at the base. Its curved, wood-clad ceiling is formed by intersecting arches and serves as both lobby and civic space for events and performances, while also providing a sheltered public passage between Congress Street and World Trade Center Avenue.

Above the base, a steel frame supports flexible, vibration-controlled floor plates for laboratory and office use. Structural and fabrication design were coordinated from the outset with Walters Group using a Tekla-based Advanced Project Delivery workflow, integrating analysis, detailing and fabrication into a single digital model.

Sustainability strategies target LEED Gold, SITES Gold and WELL Gold certifications. Roughly two acres of planted outdoor space manage stormwater, reduce heat-island effects and improve year-round usability, while the efficient structure and adaptable layouts support long-term flexibility and reduced embodied carbon.

Learn more about the project: https://tt-heres-how.com/10WorldTradeCVUAward

Photos by Michael Grimm.

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