I-405 Freeway Construction Update
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: I-405 Closures for Overhead Sign Installation The southbound I-405 will close between the SB I-405 offramp to Seal Beach Boulevard and the SB I-405 on-ramp from Bolsa Chica Road for an overhead sign installation. Several ramps will also be closed.
The nightly SB I-405 closures were anticipated as early as 5 a.m., today, Dec. 22.
Once restriping has been completed, there will be one carpool lane between Bolsa Chica Road and I-605 through fall 2023.
This work may be loud. The schedule is subject to change due to inclement weather.
I-405 Infrastructure Construction Crews are working on installing the 405 Express Lanes infrastructure between I-605 and Bolsa Chica Road.
Throughout Seal Beach, crews are actively working on installing electrical systems, barriers, and permanent concrete in the center median.
Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup. Email 405project@octa.net or call (888) 400-8994 for more information.
