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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Westminster Boulevard Construction Update
Recorded Online Neighborhood Meeting – January 20, 2021opens in a new tab
Wednesday, January 20, 2021
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Weekly Construction Alert
I-405 Improvement Project Construction Alert: Week of January 18opens in a new tab
Wednesday, January 20, 2021
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Closures and Detours
Construction Update: Talbert Avenue Bridge Workopens in a new tab
Tuesday, January 19, 2021
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Closures and Detours
Closure Alert: Full SB and NB Freeway Closures for Talbert Falsework Removalopens in a new tab
Thursday, January 14, 2021
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Weekly Construction Alert
I-405 Improvement Project Construction Alert: Week of January 11opens in a new tab
Wednesday, January 13, 2021
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Closures and Detours
Closure Alert: Full Closure of Bolsa Avenue for Concrete Workopens in a new tab
Monday, January 11, 2021
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Closures and Detours
NB and SB I-405 Freeway Closures for Talbert Avenue Falsework Removalopens in a new tab
Thursday, January 7, 2021
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Closures and Detours
NB I-405 On-Ramp from South Coast Dr./Hyland Ave. to Close for Approx. 2 Monthsopens in a new tab
Wednesday, January 6, 2021
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Closures and Detours
Closure Alert! SB I-405 On-Ramp from Harbor Closed for Approximately One Monthopens in a new tab
Tuesday, January 5, 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