IDC Consulting Engineers, Inc. is a transportation engineering firm specializing in structural, civil, and program/construction management (PM/CM), delivering complex multimodal infrastructure across California and beyond. With 30+ years of experience, 100+ major projects, and over $10B in delivered infrastructure, IDC has built a reputation for engineering excellence and reliable project delivery.

The firm serves key markets including highways and roads, bridges, rail infrastructure, transit and urban mass transit systems, and ports and waterway structures. Its in-house team provides expertise in structural design, seismic engineering, independent checking engineering (ICE), and end-to-end project delivery support.

Founded in 1995 following landmark seismic retrofit work after the Loma Prieta earthquake, IDC continues to bring deep technical rigor and resilience to every project. The firm is also recognized for its role on major programs such as California High-Speed Rail, where it completed over 4,000 technical reviews as Independent Check Engineer.

Driven by innovation and a commitment to delivering on time and within budget, IDC continues to partner with leading public agencies to shape safer, more connected, and more sustainable transportation infrastructure.


IDC Consulting Engineers

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IDC Consulting Engineers

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