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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Closures and Detours
Construction Update: Bolsa OH Pile Installationopens in a new tab
Tuesday, July 27, 2021
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Closures and Detours
Construction Update: Brookhurst Waterline Installationopens in a new tab
Monday, July 26, 2021
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Weekly Construction Alert
I-405 Improvement Project Construction Alert: Week of July 19opens in a new tab
Wednesday, July 21, 2021
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Beach Boulevard Construction Update
Virtual Neighborhood Meetingopens in a new tab
Thursday, July 22, 2021
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Closures and Detours
Construction Update: Fairview Road Bridge Falsework Installationopens in a new tab
Friday, July 16, 2021
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Closures and Detours
Construction Update: Bolsa Avenue Demolition Activities Continueopens in a new tab
Thursday, July 15, 2021
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Closures and Detours
Construction Update: NB I-405 On-Off Ramp Closures for Restriping Workopens in a new tab
Tuesday, July 13, 2021
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Closures and Detours
Construction Update: NB I-405 Off-Ramp to Susan St. to Close for One Monthopens in a new tab
Monday, July 12, 2021
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Closures and Detours
Construction Update: Bolsa Chica Road Construction Activitiesopens in a new tab
Friday, July 9, 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