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For more information about this project, please contact the 405 Community Outreach Team at 405project@octa.net or 888-400-8994, or visit octa.net/405improvement.

Si prefiere recibir información en español, por favor llame este numero 888-400-8994.

Nếu quý vị muốn nhận được thông tin này bằng tiếng Việt, xin vui lòng liên lạc với cô Lý Gia
888-662-6569.
Less driving. More living.
Opening in late 2023, OCTA's new 14-mile 405 Express Lanes will ease congestion. 
Traffic that moves lets you go with the flow and connect sooner to your best things in life.

For more information , visit 405expresslanes.com.

OPENING SOON! Springdale, Ward and Newland Street Bridges

Springdale Street Bridge

Ward Street Bridge

Newland Street Bridge

The Springdale, Ward, and Newland Street bridges are anticipated to open in mid-to-late September. The 405 Community Outreach Team will provide updates in future alerts.

To view and print a detailed list of closures and detours CLICK HERE!

REMINDER! Southbound (SB) Euclid Street Closures TONIGHT for I-405 Bridge Work

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Southbound (SB) Euclid will close nightly between Condor Avenue/Mt. Washington Street and the SB freeway ramps for seismic retrofit work on the existing columns for the I-405 bridge over the Santa Ana River and Euclid/Ellis Avenue.


The nightly SB Euclid closures are 10 p.m. to 5 a.m. TONIGHT, Sept. 15, and Saturday, Sept. 16.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

REMINDER! Bolsa Avenue and Goldenwest Street Closures Continue TONIGHT for Final Striping

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Bolsa Avenue will close between Victoria Lane and Hoover Street, and Goldenwest Street will close between Westminster Mall Road and Oxford Drivfor final striping.


The closure is anticipated to continue as early as 9 p.m. TONIGHT, Sept. 15, to 5 a.m. Saturday, Sept. 16.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

REMINDER! Westminster Boulevard Closures TONIGHT for Final Paving

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Westminster Boulevard will close nightly between Springdale Street and Willow Lane so crews can conduct final paving.


The nightly closures are anticipated 9 p.m. to 5 a.m. TONIGHT, Sept. 15, to Saturday, Sept. 23.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

UPDATE! Eastbound (EB) Garden Grove Boulevard Closures Continue TONIGHT for Concrete Work

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Eastbound (EB) Garden Grove Boulevard will close nightly between Valley View Street and the northbound I-405 off-ramp to Garden Grove for concrete work.


The nightly EB closures are anticipated as early as 9 p.m. to 5 a.m. TONIGHT, Sept. 15, to Friday Sept. 22.



Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

COMING SOON! Bolsa Chica Road and Garden Grove Boulevard Closures for Final Paving

Crews will close Bolsa Chica Road and Garden Grove Boulevard nightly for final paving.


The nightly closures are anticipated to begin as early as Wednesday, Sept. 20.


The 405 Community Outreach Team will provide detailed schedule, closure and detour information in future alerts.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

NEW! Northbound (NB) Euclid Street Closures for Bridge Work

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Northbound (NB) Euclid Street will close nightly between the southbound freeway ramps and Condor Avenue/Mt. Washington Street for seismic retrofit work on the existing columns for the I-405 bridge over the Santa Ana River and Euclid/Ellis Avenue.


The nightly NB Euclid closures are anticipated as early as 10 p.m. to 5 a.m. Monday, Sept. 18, and Friday, Sept. 23.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

NEW! Northbound (NB) I-405 Closures to Install Traffic Detectors

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Northbound (NB) I-405 will close nightly between Bolsa Avenue and Westminster Boulevard to install traffic detectors.


The nightly NB I-405 closures are anticipated as early as 11 p.m. to 5 a.m. Monday, Sept. 18, and Tuesday, Sept. 19.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

NEW! Northbound (NB) I-405 Closures to Install an Overhead Sign

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Northbound (NB) I-405 will close nightly between SR-73 and Fairview Road to install an overhead sign.


The nightly NB I-405 closures are anticipated as early as 11 p.m. to 5 a.m. Monday, Sept. 18, and Tuesday, Sept. 19.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

NEW! Southbound (SB) I-405 Closures to Install Joint Seal Assemblies

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Southbound (SB) I-405 will close nightly between Euclid Street and Harbor Boulevard to install joint seal assemblies.


The nightly SB I-405 closures are anticipated as early as 11 p.m. to 5 a.m. Monday, Sept. 18, and Tuesday, Sept. 19.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

NEW! Northbound (NB) I-405 Closures to Install Traffic Detectors

Click image to enlarge.

Northbound (NB) I-405 will close nightly between Westminster Boulevard and Bolsa Chica Road/Valley View Street to install traffic detectors.


The nightly NB I-405 closures are anticipated as early as 11 p.m. to 5 a.m.

Wednesday, Sept. 20, to Friday, Sept. 22.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

NEW! Southbound (SB) I-405 Closures to Install Joint Seal Assemblies

Click image to enlarge.

Southbound (SB) I-405 will close nightly between Fairview Road and SR-73 to install joint seal assemblies.


The nightly SB I-405 closures are anticipated as early as 11 p.m. to 5 a.m.:

  • Wednesday, Sept. 20;
  • Thursday, Sept. 21; and
  • Friday, Sept. 22.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

NEW! Southbound (SB) I-405 Closures to Install Traffic Detectors

Click image to enlarge.

Southbound (SB) I-405 will close nightly between Beach Boulevard and Magnolia Street to install traffic detectors.


The nightly SB I-405 closures are anticipated as early as 11 p.m. to 5 a.m. Wednesday, Sept. 20, and Thursday, Sept. 21.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

REMINDER! Westminster Boulevard/Willow Lane Intersection Closures for Drainage Work

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The Westminster Boulevard/ Willow Lane intersection will continue to close nightly for drainage work.


Additional nighttime intermittent lane reductions are expected to continue through Sept. 30.


Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.

Este trabajo puede ser ruidoso. El horario está sujeto a cambios debido a las inclemencias del tiempo o problemas operativos imprevistos.

Xin lưu ý là công việc này có thể gây nên những tiếng động ồn ào. Lịch trình có thể thay đổi vì thời tiết xấu hoặc những yếu tố công tác không thể dự đoán.


405 Express Lanes
REMINDER! Crews are performing utility work and installing equipment for the new 405 Express Lanes. This work requires intermittent nighttime lane reductions on northbound and southbound I-405.

Ongoing lane reductions are anticipated as early as 10 p.m. to 4 a.m. on weeknights and weekends, as needed.

Please be advised that this work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.


Northbound & Southbound I-405
REMINDER! Crews are performing grinding work and barrier construction at night on northbound and southbound I-405.

Activities are ongoing intermittently, 10 p.m. to 5 a.m. on weeknights and weekends as needed.

Please be advised that this work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.


Harbor Boulevard

NEW! Crews will place irrigation in the center median on Harbor Boulevard. This work requires nightly lane reductions on northbound and southbound Harbor, at I-405.


The nightly lane reductions are anticipated as early as 11 p.m. to 5 a.m. Tuesday, Sept. 19, to Saturday, Sept. 30.


REMINDER! Crews are performing nighttime work for the I-405 bridge over Harbor Boulevard. This work must be done at night because it requires lane closures on I-405 and on Harbor. It also requires ramp closures.


Activities are ongoing 9 p.m. to 5 a.m. on weeknights and Saturdays as needed.


Please be advised that this work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.


Fairview Road

NEW! Crews will repair the wall along northbound (NB) Fairview Road, at I-405. This work will require daytime lane reductions on NB Fairview between McCormack Lane to approximately the southbound I-405 on-ramp from Fairvew.


The daytime lane reductions are anticipated as early as 9 a.m. to 3 p.m. Monday, Sept. 18, to Friday, Sept. 22.


Please be advised that this work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.

Local businesses need your love and support! Orange County Transportation Authority (OCTA) is partnering with the cities of Fountain Valley, Westminster and Huntington Beach and their Chambers of Commerce for the 405 Forward program. We want to highlight businesses along the I-405 Improvement Project, and we need your help!
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