Construction Updates
OCTA in cooperation with Caltrans is widening the San Diego Freeway (I-405) between SR-73 and I-605. The project will improve 16 miles of I-405 between the SR-73 freeway in Costa Mesa and I-605 near the L.A. County line.
View Closures & Detours
Bridge Milestones
The bridges highlighted below have recently reached a significant project milestone.
All Bridge Information
For information about a specific bridge:
Latest Activity
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Milestones and Openings
Open to Traffic: Northbound Euclid Street Off-Rampopens in a new tab
Monday, October 18, 2021
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Closures and Detours
Construction Update: Goldenwest Falsework Installation Continuesopens in a new tab
Monday, October 18, 2021
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Closures and Detours
Construction Update: Nightly Magnolia Street Bridge Closuresopens in a new tab
Friday, October 15, 2021
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Weekly Construction Alert
I-405 Improvement Project Construction Alertopens in a new tab
Wednesday, October 13, 2021
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Closures and Detours
Construction Update: Fairview Falsework Removalopens in a new tab
Monday, October 11, 2021
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Closures and Detours
Construction Update: SB Harbor On-Ramp Extended Closureopens in a new tab
Sunday, October 10, 2021
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Closures and Detours
Construction Update: NB Bolsa Chica Falsework Removalopens in a new tab
Friday, October 8, 2021
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Closures and Detours
Construction Update: SB Euclid Street Closureopens in a new tab
Thursday, October 7, 2021
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Closures and Detours
Construction Update: Brookhurst Falsework Removalopens in a new tab
Sunday, October 3, 2021
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Springdale Construction Update
Recorded Virtual Neighborhood Meetingopens in a new tab
Thursday, September 16, 2021
English: If you have questions, please
contact the Outreach
Team by calling
888-400-8994
Español: Para obtener
más
información sobre
el Proyecto de Ampliación en el I-405, llame al 888-400-8994
Tiếng Việt: Để
biết
thêm thông tin về Dự Án Cải Thiện Xa Lộ
I-405, vui lòng liên hệ với Gia Ly theo số 888-662-6569