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405 Freeway Construction Update

405 Freeway Construction Update 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: Bolsa Avenue Demolition Activities

Crews are demolishing a portion of the Bolsa Avenue bridge as part of the freeway widening project. The second half of the bridge will be demolished under a full freeway closure set for 11 p.m., Saturday, July 10, to 8:30 a.m., Sunday, July 11.

Additional nighttime demolition will occur for several weeks under freeway lane closures. Some daytime demolition also is anticipated.

Northbound freeway lane closures are set for 9 p.m., Friday, July 9, to 8 a.m., Saturday, July 10.

Bolsa Chica Road Traffic Signal Work

Crews are installing the permanent traffic signal at the Bolsa Chica Road/Old Bolsa Chica Road intersection. This work will require intermittent lane reductions on Bolsa Chica. Activities include electrical, foundation, and concrete work.

Intermittent lane reductions began July 2 and will continue for about two weeks.

•Daytime work hours are 7 a.m.-4 p.m.

•Crews may mobilize equipment as early as 6 a.m.

•Nighttime work hours are 10 p.m.-5 a.m.

NB I-405 Loop Off-Ramp to Bolsa Avenue to Close

Crews have closed the northbound I-405 loop off-ramp to Bolsa for approximately three months to accommodate the freeway widening. It should reopen in mid-September.

SR-22 On-Ramp from Old Ranch Parkway Closed

The Old Ranch Parkway on-ramp to the westbound SR-22 closed April 13 for eight months to accommodate freeway widening.

Activities include demolition, excavation, grading, drainage and electrical system installation, concrete pours and asphalt paving.

Work hours are from 7 a.m.-4 p.m. Crews may mobilize equipment as early as 6 a.m. Nighttime work hours are 9 p.m.-6 a.m.

Almond Avenue Update

Demolition and reconstruction of the sound walls along Almond Avenue in College Park East are anticipated to start soon. Crews will install a temporary sound barrier prior to demolition.

Bolsa Chica Road

Continuation of pile driving for the Bolsa Chica bridge over I-405 along the center median and southbound I-405 at Bolsa Chica bridge. The work is ongoing 7 a.m.-4 p.m. on weekdays for approximately two months. Crews may mobilize equipment as early as 6 a.m., and some activities may occur from 9 p.m.-5 a.m. as needed.

Westminster Boulevard

Crews began working on the foundation of the retaining wall adjacent to Cascade Park along the southbound (SB) I-405 on-ramp from Westminster Boulevard. The foundation consists of approximately 80 cast-in-drilled-hole (CIDH) piles.

Work is ongoing from 7 a.m.-4 p.m. on weekdays, for approximately one month.

Crews may mobilize equipment as early as 6 a.m., and some activity may occur at night. Intermittent nighttime closures of the southbound I-405 on-ramp from Westminster may be required.

Additional construction activities including rebar, form and concrete activities are underway, and backfill and block wall installation is anticipated in July and August.

The 405 Community Outreach Team will provide detailed schedule information in future alerts.

Sign up for project-wide and bridge-specific construction alerts at Email or call (888) 4008994 for more information. The I-405 Improvement Project mobile app provides quick access to current traffic conditions, closures and detours, along with project updates and links to contact the project team. Download it from the Apple Store or Google Play.

I-405 Improvement Project automated call and text alerts will now start coming to subscribers from the I-405 Project Helpline number (888-400-8994.) This will allow people to leave messages if they have questions or concerns about the project.

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