Ontario

Since the merger of R.M. Byrd and Miyamoto International, the combined firm has grown into one of the leading structural engineering companies in Southern California. Leveraging Miyamoto’s statewide networks in California and Nevada, including structural and MEP engineering expertise, R.M. Byrd | Miyamoto now delivers an even higher standard of service to clients across the region.

Originally founded in 1992, R.M. Byrd built its reputation on innovation, quality, and efficient design. The firm has completed thousands of projects, including the award-winning Bonita Center for the Arts, the LEED Platinum-certified Cucamonga Valley Water District Frontier Project, and the redevelopment of Avalon City Hall.

This merger was founded on shared values: a commitment to long-term client partnerships and a culture where team members thrive. United under a single name, R.M. Byrd | Miyamoto is focused on delivering resilient, efficient, and technically advanced infrastructure that supports economic growth and public safety.