405 Freeway Construction
The Orange County Transportation Authority, in cooperation with Caltrans, is widening the San Diego Freeway (I-405) between SR-73 and I-605.The project is improving 16 miles of I-405 between the SR-73 freeway in Costa Mesa and I-605 near the Los Angeles County line.
Construction updates are as follows:
• Northbound I-405 Loop Off-Ramp to Bolsa Avenue to Close Crews will close the NB I-405


