Crossey Engineering is now Salas O’Brien
Same team. Same service. Expanded resources.
Crossey Engineering, a Canadian firm with a 60-year international legacy, has joined forces with Salas O’Brien—bringing world-class talent, expertise, and technology-driven solutions to clients across North America, while continuing to operate as a Canadian-led team.

Two industry leaders unite to deliver innovation and excellence
Since joining Salas O’Brien in 2023, Crossey Engineering has strengthened our expertise in mechanical, electrical, lighting, technology, commissioning, and sustainable design—while continuing to operate as a Canadian-led team. Our leadership and teams remain in Toronto, Ottawa, and Vancouver, ensuring that our clients continue to receive local, personalized service backed by expanded capabilities.
Contact the Crossey team
Expanding our reach: key markets
Crossey’s portfolio enhances Salas O’Brien’s existing work across healthcare, laboratories, pharmaceuticals, arts and entertainment, higher education, and government sectors. With a broader talent pool and multi-disciplinary expertise, we are positioned to deliver even more comprehensive solutions across North America.

Locally Canadian. Globally respected.
Crossey Engineering’s story began in Toronto in the 1960s, when a group of visionary engineers set out to redefine consulting engineering. Today, we have expanded our presence nationwide in Canada, with offices in Toronto, Ottawa, Calgary, Vancouver, and Montreal, and a global reach that spans projects of all sizes and industries.
A legacy of excellence: award-winning projects
Over the decades, our work has been recognized with numerous industry awards, including:
- 2024: ENR’s Best Project in Sports & Entertainment – Rogers Centre Renovation, Phase 2
- 2023: IES Award of Merit – Ed Mirvish Theatre Transformation
- 2021: ENR Texas & Louisiana, Best Sports/Entertainment Project Award – The Buddy Holly Hall of Performing Arts and Sciences
- 2014: Edwin F. Guth Memorial Award – Mariinsky II Theatre, St. Petersburg
Featured experience

Lubbock Entertainment/Performing Arts Association – Buddy Holly Hall of Performing Arts and Sciences
Our team provided mechanical, electrical, and award-wining lighting design to ensure a comfortable guest experience and energy-efficient operations despite Texas’ extreme temperature fluctuations.

MLB Toronto Blue Jays – Rogers Centre Renovation
The major renovation of Toronto Blue Jays’ Rogers Centre is transforming the multi-purpose stadium into a baseball-centric facility and bringing fans closer to the action. Our team provided mechanical, electrical, lighting, IT, telecommunications, and security design.
A unified team: more expertise, more innovation
In addition to Crossey Engineering, Consullux Lighting Consultants, Gruen, and Integrated Communications & Systems Solutions (ICS2) are now part of Salas O’Brien. This integration strengthens our capabilities in architectural lighting design, energy modeling, sustainability, LEED consulting, security, and information technology, telecommunications, and AV design —allowing us to offer even greater value to our clients.