405 Freeway Project 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: Nightly Consecutive Ramp Closures Scheduled for Six Months Crews are scheduled to close the following ramps each night for six months to support bridge construction activities at Magnolia Street and Brookhurst Street:
• Southbound I-405 loop onramp from Magnolia Street » Detour: southbound Magnolia to eastbound Talbert Avenue to southbound I-405 on-ramp
• Southbound I-405 on-ramp from Warner Avenue » Detour: eastbound Warner to southbound Brookhurst Street to eastbound Talbert Avenue to southbound I-405 on-ramp
• Southbound I-405 loop onramp from Brookhurst Street »Detour: southbound Brookhurst Street to eastbound Talbert Avenue to southbound I-405 on-ramp 405
The nightly closures were scheduled to begin this week, and continue for approximately six months. Closure hours are 10 p.m.-5 a.m., weeknights, and 10 p.m.-7 a.m., weekends.
The duration of this work may change depending on site conditions.
Be advised that this work may be loud. Dates and times are subject to change due to unforeseen operational factors or inclement weather. Southbound I-405 Loop Off-Ramp to Beach Boulevard is PERMANENTLY CLOSED The southbound I-405 loop off-ramp to northbound Beach Boulevard is permanently closed. Motorists will use the Beach Boulevard/Center Avenue off-ramp from now on to access northand southbound Beach Boulevard.
The loop off-ramp was eliminated to accommodate the widening of Beach and of the freeway. The Beach/Center off-ramp and Center are being reconstructed to accommodate the change in traffic volume.
Orange County Sanitation District
Crews are replacing sewer lines on Westminster Boulevard between Seal Beach Boulevard and Bolsa Chica Road. Expect some traffic delays.
The 405 Community Outreach Team is Still Working
Email 405project@octa.net or call (888) 400-8994 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.
It’s available for download via the Apple Store or Google Play.
