featured graphic for I-405 Improvement Project after COVID-19. Logo courtesy of OCTA.

I-405 Improvement Project construction alert: Week of Monday, Aug. 15

For more information about this project, please contact the 405 Community Outreach Team at [email protected] 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.

CHECK OUT OUR PROGRESS!

REMINDER! I-405/SR-73 Express Lanes Connector Concrete Pour

Crews will pour concrete for the new I-405/SR-73 Express Lanes connector. This work will require two 12-hour southbound (SB) I-405 closures in Costa Mesa. The SB I-405/SR-73 on-ramp from Fairview Road will also be closed.

NB I-405, the existing SR-73 connector, and Fairview Road bridge will remain open.

The closures are anticipated 9 p.m. Friday, Aug. 19, to 9 a.m. Saturday, Aug. 20, and again 9 p.m. Friday, Aug. 26, to 9 a.m. Saturday, Aug. 27.

Crews will conduct another concrete pour in mid-September. This work will also require closures. The 405 Community Outreach Team will provide updates in future alerts

The SB I-405/SR-73 on-ramp from Fairview may open sooner than 9 a.m.

REMINDER! Northbound I-405 off-ramp to Willow Lane will PERMANENTLY Close this Month

Crews began the second phase of construction of the Westminster bridge in 2021. When the new portion of the bridge opens this summer, it will have new vehicle lanes and sidewalks. Additionally, crews are constructing new traffic signals for the Westminster/Springdale Street and the Westminster/Willow Lane intersections.

The I-405 Improvement Project is excited to deliver an improved bridge to your community!

Please note that the northbound I-405 off-ramp to Willow will be permanently closed later this month as part of the project improvements, and crews will continue constructing traffic signals, striping new bike lanes and conducting drainage work in the coming months.

To open the new portion of the bridge, the community should expect a full bridge closure for one night so crews can restripe lanes.

The 405 Community Outreach Team will provide updates in future alerts.

Stay tuned for more progress!

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

Click to see closures and detours on the interactive map.

REMINDER! Full Freeway Closure for Restriping

Crews will restripe lanes, on I-405, between Edinger Avenue and Magnolia Street.

This work will require a northbound (NB) I-405 closure between NB I-405 loop on-ramp from Magnolia Street and the NB I-405 loop on-ramp from Beach Boulevard and a southbound (SB) I-405 closure between the SB I-405 off-ramp to Center Avenue/Beach Boulevard and the SB I-405 on-ramp from Talbert Avenue.

NB and SB I-405 will be closed as early as 11 p.m. Saturday, Aug. 13, to 6 a.m. Sunday, Aug. 14.

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

NEW! Northbound (NB) and Southbound (SB) Closures for Warner Avenue Bridge Falsework Adjustments

Crews will adjust the falsework for the Warner Avenue bridge over I-405.

This work will require a NB I-405 closure between the NB I-405 off-ramp to Brookhurst Street and the NB I-405 on-ramp from Warner.

The NB I-405 closure is anticipated 11 p.m. Monday, Aug. 15, to 5 a.m. Tuesday, Aug. 16.

This work will also require SB I-405 closures between the SB I-405 off-ramp to Magnolia Street and the SB I-405 on-ramp from Talbert Avenue.

SB I-405 closures are anticipated:

  • 11 p.m. Tuesday, Aug. 16, to 5 a.m. Wednesday, Aug. 17; and again
  • 11 p.m. Thursday, Aug. 18, to 5 a.m. Friday, Aug. 19.

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

UPDATE! Southbound (SB) and Northbound (NB) I-405 Closures for the New I-405/SR-73 Express Lanes Connector

Crews will continue to construct the new I-405/SR-73 Express Lanes Connector.

This requires SB I-405 closures between the SB I-405 off-ramp to Fairview Road and the SB I-405 on-ramp from Bristol Street.

SB I-405 closures are anticipated:

  • 11 p.m. Friday, Aug. 12, to 6 a.m. Saturday, Aug. 13;
  • 11 p.m. Monday, Aug. 15, to 5 a.m. Tuesday, Aug. 16; and again
  • 11 p.m. Wednesday, Aug. 17, to 5 a.m. Thursday, Aug. 18.*

This work also requires NB I-405 closures between the NB I-405 off-ramp to South Coast Drive and NB I-405 on-ramp from Fairview.

NB I-405 closures are anticipated:

  • 11 p.m. Tuesday, Aug. 16, to 5 a.m. Wednesday, Aug. 17; and again
  • 11 p.m. Wednesday, Aug. 17, to 5 a.m. Thursday, Aug. 18.*

*NB and SB I-405 will be closed simultaneously.

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

COMING SOON! Daytime Ramp Closures for Warner Avenue Bridge Concrete Pour

Crews will pour concrete for the Warner Avenue bridge over I-405. This work will require a daytime ramp closure in late August.

The 405 Community Outreach Team will provide updates in future alerts.

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

COMING SOON! Northbound (NB) Loop On-Ramp from Harbor Boulevard to Close for Approximately One Month

Crews will close the NB I-405 loop on-ramp from Harbor Boulevard for approximately one month as part of project improvements.

The ramp closure is anticipated for late August.

COMING SOON! Southbound (SB) I-405 Off-Ramp to Seal Beach Boulevard to Close for Approximately One Month

Crews will close the SB I-405 off-ramp to Seal Beach Boulevard for approximately one month as part of project improvements.

The ramp closure is anticipated for late summer 2022.

REMINDER! Southbound (SB) I-405 Warner Avenue On- and Off-Ramps Closed for Approximately Six Weeks

Crews closed the SB I-405 straight on-ramp from Warner and the SB I-405 loop off-ramp to Warner as part of project improvements.

The ramps closed Thursday, July 14, and are anticipated to open in late August 2022.

REMINDER! Southbound (SB) I-405/Eastbound (EB) SR-22 Connector Extended Lane Reduction

Crews reduced the SB I-405/EB SR-22 connector to two lanes for pavement activity.

The lane reductions began Friday, June 10, and will be in place through August 2022.

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.

Construction Activities

Montecito Channel

REMINDER! Crews are relocating several utilities to continue widening the drainage channel adjacent to homes in the College Park West community.

Utility line relocation is ongoing, 7 a.m. to 4 p.m. on weekdays.

Block wall installation is anticipated to begin in fall 2022.

Crews may access the work zone, intermittently along College Park Drive and from the WB SR-22 connector, to mobilize equipment as early as 6 a.m., and some activities may occur at night from 9 p.m. to 6 a.m. 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.

North Gate Road

UPDATE! Crews closed North Gate Road to conduct sewer work.

Vehicles, bicyclists and pedestrians will be detoured to Golden Rain Road to enter and exit Leisure World.

The closure began Tuesday, July 5, and is anticipated to open after approximately three months.

Sewer work is anticipated 7 a.m. to 4 p.m. on weekdays, for approximately three months. Crews may mobilize equipment as early as 6 a.m., and some activities may occur from 9 p.m. to 6 a.m. as needed.

Block wall installation for the sound walls is anticipated to begin fall 2022.

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

Almond Avenue

REMINDER! Crews will continue constructing the sound walls along northbound (NB) I-405, adjacent to Almond Avenue.

Block wall installation is anticipated to begin in late August.

Construction activities will continue 7 a.m. to 4 p.m. on weekdays.

Crews may mobilize equipment as early as 6 a.m., and some activities may occur from 9 p.m. to 6 a.m. 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.

Springdale Street

REMINDER! Crews will continue constructing the new traffic signal at the Westminster Boulevard/Springdale Street intersection as part of the bridges’ reconstruction.

Activities include permanent pole foundation work, as well as electrical work. After the temporary signal is complete, crews will begin construction of the permanent traffic signal.

Construction of the permanent signal is ongoing, 7 a.m. to 4 p.m. on weekdays and Saturdays, through August 2022.

This work will also include intermittent nighttime lane reductions on Springdale and Westminster.

Crews may mobilize equipment as early as 6 a.m., and some activities may occur from 9 p.m. to 6 a.m. 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.

Bolsa Avenue

UPDATE! Crews will continue constructing the wall along SB I-405, adjacent to Vermont Street.

Activities will continue 7 a.m. to 4 p.m., on weekdays, through at least Tuesday, Aug. 16.

Crews may mobilize equipment as early as 6 a.m., and some activities may occur from 9 p.m. to 6 a.m. 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.

The duration of this work may change depending on site conditions. Please be advised that this work may be loud. Dates and times are subject to change due to unforeseen operational factors or inclement weather.

This article was released by the Orange County Transportation Authority.