SBCTA Dedicates First Diverging Diamond Interchange in San Bernardino County

May 15, 2026

The San Bernardino County Transportation Authority (SBCTA) joined regional partners, local leaders, and community members to celebrate the completion of the new Diverging Diamond Interchange (DDI) at Interstate 215 and University Parkway. This innovation solution is the first DDI in San Bernardino County and a significant milestone for mobility in the east valley.

Located at a major gateway to Cal State San Bernardino and rapidly growing north end neighborhoods, the interchange has long served some of the busiest traffic in the region. The new DDI configuration is designed to improve safety, streamline traffic movements, and help reduce congestion by eliminating traditional left turns across oncoming traffic. This innovative design supports SBCTA’s ongoing commitment to delivering smart, forward-thinking infrastructure that enhances the daily experience of residents, students, commuters, and visitors alike.

The project was made possible through strong collaboration among the City of San Bernardino, Caltrans, and Cal State University, San Bernardino, with key contributions from SEMA Construction, Kleinfelder Construction Services, and HDR, who played central roles in building, managing, and designing the interchange. SBCTA President Rick Denison also recognized SBCTA’s Director of Project Delivery, Kristi Harris, and her team for their leadership throughout the complex construction effort.

Funding for the interchange was supported by Measure I, San Bernardino County’s voter approved half cent sales tax for transportation improvements. SBCTA expressed deep appreciation to county residents for their continued trust and investment, which makes projects like the University Parkway DDI possible and keeps the region moving forward.

The new interchange will serve the region for decades, providing improved mobility and supporting economic growth. The dedication ceremony highlighted what can be achieved when agencies, institutions, and residents work together toward a shared vision: a safer, more efficient transportation network for San Bernardino County.