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San Diego Freeway (I-405)

405 Overview


Whether you are heading to Orange County's beautiful beaches, shopping at world-class retail centers, experiencing live performances, catching flights, commuting to work or carpooling children, chances are you will use the San Diego Freeway (I-405). More than 300,000 motorists traverse this interchange daily, making it one of the 10 busiest in the United States.

I-405 Projects



Christina Byrne

Project Contact

Christina Byrne
Manager of Community Outreach
(714) 560-5717

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