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 Road and the I-405 on-ramp from Seal Beach Boulevard to install traffic detectors.
The northbound closure started April 3 and is expected to last through 6 a.m., Friday, April 7.
Southbound I-405 Closures at Bolsa Avenue The southbound I-405 will close nightly between the SB I-405 off-ramp to Goldenwest Street and the SB I-405 on-ramp from Center Avenue/Beach Boulevard to install joint seal assemblies.
The nightly SB closures are expected to last through Friday, April 7.
Northbound I-405 Closures The northbound I-405 will close nightly between the NB I-405 off-ramp to South Coast DriveandtheNBI-405on-ramp from Fairview Road to remove falsework from the SR-73/I-405 Express Lanes connector.
The nightly NB I-405 closures are expected to last through Friday, April 7. The 405 Community Outreach Team will provide updates in future alerts. Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
