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

I-405 Improvement Project construction alert: Wednesday, July 6

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.

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

Click to see closures and detours on the interactive map.

UPDATE! Southbound (SB) I-405 Warner Avenue On- and Off-Ramps to Close for Approximately Six Weeks

Crews will close the SB I-405 straight on-ramp from Warner and the SB I-405 loop off-ramp to Warner for approximately six weeks to accommodate the freeway widening.

The extended ramp closures are anticipated as early as 10 p.m. Thursday, July 14.

To accommodate the ramp closures, crews will also need to close eastbound (EB) Warner between Magnolia Street and I-405 and SB I-405 between the SB I-405 off-ramp to Magnolia and the SB I-405 loop on-ramp from Brookhurst Street for one night.

  • The SB I-405 closure is anticipated for 11 p.m. Tuesday, July 12, to 5 a.m. Wednesday, July 13.
  • The EB Warner closure is anticipated for 11 p.m. Thursday, July 14, to 5 a.m. Friday, July 15.

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.

NEW! Northbound (NB) I-405 Closures for Brookhurst Street Bridge Falsework Installation

Crews will begin installing falsework for the new portion of the Brookhurst Street bridge over I-405.

This work will require NB I-405 closures between the NB I-405 off-ramp to Brookhurst and the NB I-405 on-ramp from Warner Avenue.

Nightly NB I-405 closures are anticipated as early as 11 p.m. to 5 a.m. Monday through Thursday, and 11 p.m. to 6 a.m. on Friday and are scheduled Monday, July 11, to Friday, July 15.

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.

REMINDER! Northbound (NB) and Southbound (SB) I-405 Closures for Restriping and to Adjust Falsework for the Bolsa Avenue Bridge

Crews are restriping lanes and adjusting falsework for the Bolsa bridge over I-405.

This work requires another NB I-405 closure between the NB I-405 off-ramp to Beach Boulevard and the NB I-405 on-ramp from Goldenwest Street.

This work also requires SB I-405 closures between the SB I-405 off-ramp to Westminster Boulevard and the SB I-405 on-ramp from Beach Boulevard/Center Avenue.

NB I-405 closure is anticipated for:

  • 11 p.m. Friday, July 8, to 6 a.m. Saturday, July 9.

SB I-405 closures are anticipated for:

  • 11 p.m. Wednesday, July 6, to 5 a.m. Thursday, July 7; and again
  • 11 p.m. Thursday, July 7, to 5 a.m. Friday, July 8.

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

UPDATE! Northbound (NB) and Southbound (SB) I-405 Closures to Install Falsework for the I-405/SR-73 Connector

Crews are installing falsework for the I-405/SR-73 Connector over I-405.

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

This work also requires SB I-405 closures between the SB I-405 off-ramp to Harbor Boulevard and the SB I-405 on-ramp from Bristol Street.

Ongoing closures are anticipated as early as 11 p.m. to 5 a.m. Monday through Thursday, and 11 p.m. to 6 a.m. on Friday.

  • NB I-405 closures are anticipated to continue Wednesday, July 6.
  • SB I-405 closures are anticipated to continue Thursday, July 7, and Friday, July 8.

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 to accommodate the freeway widening.

The ramp closure is anticipated for this month.

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.

UPDATE! Fairview Road Bridge Closure for Waterline Installation and Pavement Work

Crews will conduct pavement and street restoration work for the Fairview Road bridge over I-405.

This work will require full Fairview bridge closures between McCormack Lane and South Coast Drive.

The closures are anticipated as early as 11 p.m. to 5 a.m.:

  • Saturday, July 9;
  • Sunday, July 10;
  • Wednesday, July 13; and
  • Thursday, June 14.

OPENING SOON! Southbound (SB) I-405 On-Ramp from Bolsa Avenue Anticipated to Open This Week

Crews closed the SB I-405 on-ramp from Bolsa Avenue to accommodate the freeway widening.

The ramp closed Wednesday, May 25, and is anticipated to open this week!

REMINDER! Northbound (NB) I-405 Straight On-Ramp from Brookhurst Street Closed for Approximately One Month

Crews closed the NB I-405 straight on-ramp from Brookhurst Street to accommodate the freeway widening.

The ramp closed Monday, June 27, and is anticipated to open after approximately one month.

COMING SOON! Cadillac Trail Full Closure

Crews reduced a portion of the bike and pedestrian trail between Cadillac Avenue and the Santa Ana River Trail in Costa Mesa. This lane reduction was needed for construction of a sound wall adjacent to SB I-405.

A full closure of the Cadillac trail is anticipated for mid July. The 405 Community Outreach Team will provide updates in future alerts.

REMINDER! Northbound (NB) I-405/Westbound (WB) SR-22 On-Ramp from Valley View Street Closed for Approximately Two Months

Crews closed the NB I-405/WB SR-22 on-ramp from Valley View Street to accommodate the freeway widening.

The ramp closed Monday, June 6, and is anticipated to reopen 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 Activites

Montecito Channel

REMINDER! Crews removed a portion of the sound wall along the westbound (WB) SR-22/7th Street connector, adjacent to the Montecito Channel and are preparing the foundation for a new wall; anticipated to be constructed summer 2022.

Temporary fencing and sound blankets were installed.

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! Pile installation for the sound wall adjacent to North Gate Road is on hold this week.

Crews will resume pile installation as early as Monday, July 11, 7 a.m. to 4 p.m.

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

REMINDER! Crews closed North Gate Road for approximately three months 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.

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 activities in preparation for construction sound walls along northbound (NB) I-405, adjacent to Almond Avenue.

Construction activities are ongoing between, 7:30 a.m. to 4:30 p.m.

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, as needed.

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 be working on the concrete barrier from the freeway work zone.

Activities will continue through Friday, July 15, 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.

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.