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.
Now Open
Warner Avenue Bridge
Complete
Improvements
Newly improved bridge
New westbound sidewalk
Now Open
Heil Avenue Pedestrian Bridge
- Complete
Improvements
- Newly improved bridge
- LED lighting for nighttime use
Now Open
Westminster Boulevard
- Complete
Improvements
- Newly improved bridge
New bike lanes on both sides of the bridge- New westbound sidewalk
Now Open
Fairview Road
- Complete
Improvements
- Newly improved bridge
Now Open
Edinger Avenue
- Complete
Improvements
- Newly improved bridge
- New westbound sidewalk
- New bike lanes on both sides of the bridge
Now Open
Edwards Street
- Complete
Improvements
- Newly improved bridge
Now Open
Magnolia Street
- Complete
Improvements
- Two new lanes of travel
- New bike lanes on both sides of the bridge
- New northbound sidewalk
Now Open
Talbert Avenue
- Complete
Improvements
- Two new lanes of travel
- New bike lanes on both sides of the bridge
Now Open
McFadden Avenue
- Complete
Improvements
- Two new lanes of travel
- New bike lanes on both sides of the bridge
- New eastbound sidewalk
Now Open
Bushard Street
- Complete
Improvements
- Newly improved bridge
Now Open
Slater Avenue
- Complete
Improvements
- Newly improved bridge
Now Open
Brookhurst Street
- Complete
Improvements
- Newly improved bridge
- New bike lanes on both sides of the bridge
Now Open
Bolsa Avenue
- Complete
Improvements
- Two new lanes of travel
- New bike lanes on both sides of the bridge
- New westbound sidewalk
Now Open
Bolsa Chica Road
- Complete
Improvements
- Four new lanes of travel
- New bike lanes on both sides of the bridge
Now Open
Goldenwest Street
- Complete
Improvements
- Three new lanes of travel
- New bike lanes on both sides of the bridge
- New southbound sidewalk
Latest Activity
Weekly Construction Alert
Closures and Detours
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Closures and Detours
Thursday, November 2, 2023
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closures and detours
Friday, October 27, 2023
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Closures and Detours
Wednesday, October 18, 2023
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Closures and Detours
Wednesday, October 18, 2023
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Thursday, October 12, 2023
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Wednesday, October 11, 2023
Closures and Detours
Closures and Detours
Wednesday, October 11, 2023
Milestones and Updates
Contact the 405 Community Outreach Team
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.
