Construction Updates
OCTA in cooperation with Caltrans is improving 16 miles of the San Diego Freeway (I-405) between State Route 73 (SR-73) and Interstate 605 (I-605). It also will construct the 405 Express Lanes from SR-73 to I-605. The new express lanes – incorporating the existing carpool lanes and connectors that opened in 2014 – will be two lanes in each direction.
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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Weekly Construction Alert
I-405 Improvement Project Construction Alertopens in a new tab
Monday, November 21, 2022
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Inside the 405 Video Series
Episode 8: A Look Back Inside the 405opens in a new tab
Friday, November 11, 2022
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Inside the 405 Video Series
Episode 7: 405 Express Lanes Explainedopens in a new tab
Friday, November 4, 2022
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Closures and Detours
Construction Update: Fairview Road Joint Seal Installationopens in a new tab
Friday, October 28, 2022
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Inside the 405 Video Series
Episode 6: 405 Forward – Supporting Local Businessesopens in a new tab
Friday, October 28, 2022
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Closures and Detours
Construction Update: NB I-405 Closure for Sign Installationopens in a new tab
Wednesday, October 26, 2022
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Closures and Detours
Construction Update: NB I-405 Closure for Lane Restriping and K-Rail Removalopens in a new tab
Tuesday, October 25, 2022
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Milestones and Openings
Now Open: SB I-405 Off-Ramp to Seal Beach Boulevardopens in a new tab
Friday, October 21, 2022
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Inside the 405 Video Series
Episode 5: Conectando con las comunidades Latinx "Reaching the LatinX Communities"opens in a new tab
Friday, October 21, 2022
If you have questions, please
contact the Outreach
Team by calling
888-400-8994
Para obtener
más
información sobre
el Proyecto de Ampliación en el I-405, llame al 888-400-8994
Để biết thêm thông tin về Dự Án Cải Thiện Xa Lộ I-405, xin vui lòng liên lạc cô Gia Lý theo đường dây tiếng Việt 888-662-6569