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I-405 Improvement Project Update

Information Provided by OCTA

Today the San Diego Freeway (I-405) is one of the most congested freeways in Orange County, carrying more than 300,000 vehicle trips in some sections each day. Traffic volumes on the I-405 are expected to increase significantly and the population is expected to grow 11 percent by 2040. Download the latest information from OCTA.

For more information visit the Orange County Transportation Authority (OCTA) webpage.


Effective June 15, 2018, the Planning Division will be available at the counter between the hours of 7:30am to 10:00am. Please call ahead (562) 431-3538.