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:

• Southbound I-405 Loop Off-Ramp to Westminster Boulevard to close for one year The southbound I-405 loop off-ramp to Westminster will close for approximately one year. The ramp is being reconstructed as part of the freeway widening. The closure is set for 7 a.m. Aug. 17.

Crews were to install a temporary traffic signal for the southbound I-405 off-ramp to Springdale Street by Aug. 11.

• I-405 Southbound Loop Off-ramp to Beach Boulevard to Close The southbound I-405 loop off-ramp to northbound Beach Boulevard will be permanently closed on Aug. 17. Motorists will use the Beach Boulevard/Center Avenue off-ramp from now on to access northbound and southbound Beach Boulevard. The loop off-ramp is being eliminated to accommodate the widening of Beach Boulevard and of the freeway. The Beach Boulevard/Center Avenue off-ramp and Center Avenue are being reconstructed to accommodate the change in traffic volume.

• NB I-405 Loop Off-ramp to Westminster Boulevard Closed

Crews have closed the northbound I-405 loop off-ramp to Westminster Boulevard. The ramp will be closed for approximately 12 months to allow construction of new walls and ramps at this location in one stage, eliminating multiple traffic shifts and confusion for motorists.

Construction Activities Goldenwest Street: Crews will continue demolishing the east side of the Goldenwest bridge over I-405. The work is ongoing from 10 p.m.-5 a.m. for approximately two more weeks; some daytime demolition also is anticipated.

East Garden Grove Channel:

Crews are continuing construction on the East Garden Grove Channel near the Newland Avenue bridge. Activities include installing shoring by vibrating in steel beams, excavation, demolishing concrete and hauling materials. Crews will also begin pile driving for the widened I-405 bridge over the channel.

The work is ongoing from 7 a.m.-4 p.m. for approximately one month. Crews may mobilize equipment as early as 6 a.m. Some activities, such as hauling materials, may occur at night.

For more information on the I-405 Freeway Project, email 405project@octa.net or call (888) 400-8994. There’s a mobile app to help residents and commuters navigate construction on the I-405. The app includes quick access to current traffic conditions, closures and detours, along with project updates and links to contact the project team. It is available for Download on the Apple Store or Google Play.