405 Freeway Construction Updates

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: SB I-405 Goldenwest Street On-Ramp and Bolsa Avenue Off-Ramp Closed Crews closed the southbound I-405 loop off-ramp to Bolsa Avenue and the southbound I-405 loop on-ramp from Goldenwest Street to accommodate the freeway widening.

The SB I-405 loop off-ramp to Bolsa closed March 12 and is anticipated to reopen in approximately two months.

The SB I-405 loop on-ramp from Goldenwest closed March 12 and is anticipated to reopen in approximately four months.

SB I-405 Loop On-Ramp from Brookhurst Street To Open

Crews closed the southbound I-405 loop on-ramp from Brookhurst Street on March 14 to accommodate the freeway widening.

The ramp is anticipated to reopen after approximately one more week.

NB I-405 On-Ramp from Fairview Road and SB I-405 Off-Ramp to Fairview Road Closed Crews closed the northbound I-405 on-ramp from Fairview and the southbound I-405 off-ramp to Fairview to accommodate the freeway widening.

The ramps closed April 11 and are anticipated to reopen in approximately one month.

Also, the southbound Fairview Road bridge will be reduced to one lane between the freeway ramps for approximately one week in early May.

Almond Avenue Sound Wall

Crews are constructing the sound walls along northbound I-405 adjacent to Almond Avenue.

The block portion of the wall is anticipated to start construction in spring 2022.

Crews may mobilize equipment as early as 6 a.m., and some activities may occur from 9 p.m.-6 a.m. as needed.

WB SR-22 On-Ramp from Old Ranch Parkway Closure

Crews closed the Old Ranch Parkway on-ramp to westbound SR-22 on April 13, 2021. The ramp is anticipated to reopen in spring 2022.