Freeway closures to begin this weekend

I-405 PROJECT

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: Brookhurst Bridge

Crews will shift traffic to the new portion of the Brookhurst Street bridge in early February. This shift is needed to begin the second phase of demolition and construction of the new bridge. This work will require bridge and extended ramp closures.

The second phase of demolition is anticipated to begin in mid- to late February.

Southbound Euclid Street

Crews will continue removing the brackets and scaffolding from the I-405 bridge over Euclid Street. This work will require a full southbound (SB) Euclid closure between Mt. Washington Street and the SB freeway ramp.

The SB closures are scheduled for 10 p.m.-5 a.m. today, Jan. 27, and Friday, Jan. 28.

SB I-405 Off-Ramp to Goldenwest Street/ Westminster Mall Road Crews will close the SB I-405 off-ramp to Goldenwest Street/Westminster Mall Road for approximately six weeks to accommodate the freeway widening. The ramp is scheduled to close 10 p.m. Monday, Jan. 31, and is anticipated to reopen after approximately six weeks.

Northbound (NB) I-405 at Westminster Boulevard Crews will adjust the falsework for the Westminster Boulevard bridge over I-405. This will require a closure between the NB I-405 off-ramp to Bolsa Avenue and the NB I-405 onramp from Westminster. The closure is scheduled for 11 p.m. Thursday, Jan. 27, to 5 a.m. Friday, Jan. 28.

SB I-405 at Westminster Boulevard Crews will adjust the falsework for the Westminster Boulevard bridge over I-405. This work will require a closure between the SB I-405 off-ramp to Springdale Street and the SB I-405 on-ramp from Westminster. The closure is scheduled for 11 p.m. Friday, Jan. 28, to 5 a.m. Saturday, Jan. 29.

NB I-405 at Brookhurst

Crews closed the NB I-405 off-ramp to Brookhurst Street and the NB I-405 loop on-ramp from Brookhurst to accommodate the freeway widening. The ramps were closed on Jan. 3 and are anticipated to reopen after approximately two months.

Brookhurst Street Bridge

Crews will close the Brookhurst Street bridge and ramps nightly for retaining wall and utility work. The nightly closures are anticipated to continue from 10 p.m.-5 a.m. for approximately two more weeks on weeknights and weekends, as needed.

Westbound (WB) SR-22 On-Ramp from Old Ranch Parkway Crews closed the Old Ranch Parkway on-ramp to WB SR-22 on April 13, 2021. The ramp will be closed for an additional three months due to unforeseen site conditions, to address complexities with traffic staging, and to accommodate the freeway widening. The ramp is anticipated to reopen in the spring.

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.