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I-405 Improvement Project

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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.

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Interstate 405 Improvement Project logo     OCTA and OCGO Logo DarkBlue

Bridge Milestones

The bridges highlighted below have recently reached a significant project milestone.

Warner Avenue Bridge

  • Completed project Complete

Improvements

  • Arrows facing opposite directions Newly improved bridge
  • Man walking on sidewalk New westbound sidewalk

Heil Avenue Pedestrian Bridge

  • Completed project Complete

Improvements

  • Arrows facing opposite directions Newly improved bridge
  • Man walking on sidewalk LED lighting for nighttime use

Westminster Boulevard

  • Completed project Complete

Improvements

  • Arrows facing opposite directions Newly improved bridge
  • Man riding a bike New bike lanes on both sides of the bridge
  • Man walking on sidewalk New westbound sidewalk

Fairview Road

  • Completed project Complete

Improvements

  • Arrows facing opposite directions Newly improved bridge

Edinger Avenue

  • Completed project Complete

Improvements

  • Arrows facing opposite directions Newly improved bridge
  • Man walking on sidewalk New westbound sidewalk
  • Man riding a bike New bike lanes on both sides of the bridge

Edwards Street

  • Completed project Complete

Improvements

  • Arrows facing opposite directions Newly improved bridge

Magnolia Street

  • Completed project Complete

Improvements

  • Arrows facing opposite directions Two new lanes of travel
  • Man riding a bike New bike lanes on both sides of the bridge
  • Man walking on sidewalk New northbound sidewalk

Talbert Avenue

  • Completed project Complete

Improvements

  • Arrows facing opposite directions Two new lanes of travel
  • Man riding bike New bike lanes on both sides of the bridge

McFadden Avenue

  • Completed project Complete

Improvements

  • Arrows facing opposite directions Two new lanes of travel
  • Man riding bike New bike lanes on both sides of the bridge
  • Man walking on sidewalk New eastbound sidewalk

Bushard Street

  • Completed project Complete

Improvements

  • Arrows facing opposite directions Newly improved bridge

Slater Avenue

  • Completed project Complete

Improvements

  • Arrows facing opposite directions Newly improved bridge

Brookhurst Street

  • Phase 1 Complete Complete

Improvements

  • Arrows facing opposite directions Newly improved bridge
  • Man riding a bike New bike lanes on both sides of the bridge

Bolsa Avenue

  • Phase 1 Complete Complete

Improvements

  • Arrows facing opposite directions Two new lanes of travel
  • Man riding a bike New bike lanes on both sides of the bridge
  • Man walking on sidewalk New westbound sidewalk

Bolsa Chica Road

  • Phase 1 Complete Complete

Improvements

  • Arrows facing opposite directions Four new lanes of travel
  • Man riding a bike New bike lanes on both sides of the bridge

Goldenwest Street

  • Phase 1 Complete Complete

Improvements

  • Arrows facing opposite directions Three new lanes of travel
  • Man riding a bike New bike lanes on both sides of the bridge
  • Man walking on sidewalk New southbound sidewalk

Latest Activity

Blue pdf icon
Weekly Construction Alert
Weekly Construction Alert
Friday, February 23, 2024
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closures and detours
closures and detours
Thursday, January 11, 2024
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Closures and Detours
Closures and Detours
Tuesday, January 2, 2024
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Closures and Detours
Closures and Detours
Tuesday, December 26, 2023
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Closures and Detours
Closures and Detours
Tuesday, December 26, 2023
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Closures and Detours
Closures and Detours
Monday, November 20, 2023
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Closures and Detours
Closures and Detours
Thursday, November 2, 2023
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Milestones and Updates
Milestones and Updates
Monday, May 15, 2023

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.

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