405 Freeway Improvement 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: SR-22 On-Ramp from Old Ranch Parkway to Close

The Old Ranch Parkway on-ramp to the westbound SR-22 is closed for about 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.

Partial Lane Closures on Seal Beach Boulevard

Crews have begun traffic signal construction at the intersection of Seal Beach Boulevard and Lampson Avenue and the intersection of Seal Beach Boulevard and the NB I-405 freeway ramps.

Activities include the installation of temporary wooden poles, traffic signal heads and electrical work.

Temporary traffic signal construction is now underway.

Seal Beach Boulevard and Lampson Avenue will be intermittently reduced to two lanes at the intersection for the duration of the job.

Nighttime work hours are 9 p.m.-6 a.m.

Bolsa Chica Road Closure

Crews closed the sidewalk at the intersection of Old Bolsa Chica Road and Bolsa Chica Road for sidewalk, curb, pedestrian ramp and traffic signal construction on April 6. The job is expected to last approximately two months. Activities include k-rail placement, demolition and restriping on Old Bolsa Chica Road.

SB I-405 Off-Ramp to Bolsa Chica Road Closed

Crews have closed the southbound I-405 off-ramp to Bolsa Chica for approximately one year for Bolsa Chica bridge construction.

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