Students and staff commuting to California State University San Bernardino today drove through the newly completed Diverging Diamond Interchange (DDI) that opened to drivers late Sunday, March 1. The new DDI interchange also improves the driving experience for local businesses, residents, employees, and community members.
The former interchange at Interstate 215 and University Parkway in San Bernardino was reconfigured into a DDI to improve traffic flow and create a safer interchange. The DDI allows more cars to pass through the interchange during a green light cycle and creates a safer center median sidewalk with concrete barriers between vehicles and pedestrians. Driver safety is increased because the risk for severe traffic collisions is reduced. Vehicles turning or merging left onto I-215 briefly transition to the left side of the road, eliminating the need to cross oncoming traffic, which reduces the risk of collisions.
SBCTA partnered with Caltrans District 8 and the city of San Bernardino to construct the interchange, which is a first in San Bernardino County. Construction began in November 2024 and while the interchange is now open, minor construction activities are expected to continue over the coming weeks.
The project cost $25.8 million to build. Funding is provided by federal, state, and local resources, including $16.4 million in Measure I funds. Measure I is the half-cent sales tax collected throughout San Bernardino County for transportation improvements. Voters first approved the measure in 1989, and overwhelmingly its extension in 2004, with more than 80 percent voting to extend the measure through 2040. SBCTA administers Measure I revenue and determines which projects receive Measure I funding.
Learn more about the project, including Frequently Asked Questions and How to Guides, at goSBCTA.com/i215universitypkwy.