405 Construction Road Closures
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: Off-ramp to Close
The northbound I-405 will close between the I-405 offramp to Bolsa Chica
