Structural Engineering
Highway and railroad bridge engineering, including interchanges, viaducts, river crossings, and pedestrian bridges.
Founded in 1995, IDC is a nationally recognized transportation engineering firm specializing in structural and civil design, as well as project management and construction management services for complex multi-modal infrastructure projects, with a proven track record in delivering exceptional engineering solutions for highways, transit, bridges, and more.
Structural and civil design plus full project and construction management — one firm across every phase.
Highway and railroad bridge engineering, including interchanges, viaducts, river crossings, and pedestrian bridges.
Civil engineering for local agencies and global engineering firms, spanning various project phases, including PA/ED, PS&E, and Construction.
Project/program and construction management services for local agencies, focusing on transportation projects across California, covering all phases, including PA/ED, PS&E, and Construction.
Our expertise encompasses the design, management, and execution of complex multi-modal facilities including highways, bridges, transit systems, and urban mass transit developments. Check out some of our featured projects and exciting developments.
Independent verification, validation, and PM/CM services for CHSR CP 2-3.
Cost-effective structural design support for CHSR DB 2-3.
Structural design and coordination for the Los Angeles Union Station transformation.
Structural design and project coordination for the Sepulveda Transit Corridor.
Widening and seismic upgrade of the historic arch bridge over the Los Angeles River.
Bridge replacement and multimodal upgrades for the Higuera Street Bridge.
At IDC, our strength lies in our talented and diverse team of professionals who bring a wealth of knowledge and creativity to every project. This rich mix of backgrounds and expertise allows us to tackle even the most complex challenges in engineering intricate structures and overseeing the full spectrum of transportation project management. Nationally recognized for our excellence, IDC has earned numerous awards for our comprehensive engineering design and project and construction management services.

Ready to learn more about IDC? Let's work together to transform your vision into reality.