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

I-405 Improvement Project construction alert: Wednesday, March 2

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! Full Freeway Closure to Continue Brookhurst Street Bridge Demolition

Crews will continue demolishing the old portion of the Brookhurst Street bridge over I-405 this weekend. This work will require a full freeway closure.

Northbound (NB) I-405 will be closed between the NB I-405 off-ramp to Euclid Street and the NB I-405 on-ramp from Brookhurst. Southbound (SB) I-405 will be closed between the SB I-405 off-ramp to Brookhurst and the SB I-405 on-ramp from Talbert Avenue.

The NB I-405 closure is anticipated as early as 11 p.m. Saturday, March 5, to 8:30 a.m. Sunday, March 6.

Some freeway ramps will also be closed.

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

UPDATE! Southbound Off-Ramp to Brookhurst Street to Close for Approximately Six Weeks

Crews will close the SB I-405 off-ramp to Brookhurst Street for approximately six weeks to accommodate the freeway widening.

The ramp is anticipated to close as early as 10 p.m. March 7, for approximately six weeks.

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

UPDATE! Southbound Loop On-Ramp from Brookhurst Street to Close for Approximately Six Weeks

Crews will close the SB I-405 loop on-ramp from Brookhurst Street for approximately six weeks to accommodate the freeway widening.

The ramp is anticipated to close as early as 10 p.m. Monday, March 14, for approximately six weeks.

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

COMING SOON! Southbound (SB) I-405 Goldenwest Street On-Ramp and Bolsa Avenue Off-Ramp to Close

Crews will close the SB I-405 loop off-ramp to Bolsa Avenue and the SB I-405 loop on-ramp from Goldenwest Street to accommodate the freeway widening.

The SB I-405 loop off-ramp to Bolsa is anticipated to close in mid-March for approximately two months.

The SB I-405 loop on-ramp from Goldenwest is also anticipated to close in mid-March for approximately four months.

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.

REMINDER! Northbound I-405 Warner Avenue On- and Off-Ramps Closed for Approximately 45 Days

Crews closed the NB I-405 on-ramp from Warner Avenue and the NB I-405 loop off-ramp to Warner on Wednesday, Feb. 23, to accommodate the freeway widening.

The ramp is anticipated to reopen after approximately 45 days.

NEW! Northbound (NB) I-405 Closure for Falsework Removal

Crews will remove falsework from the Fairview Road bridge over I-405. This work will require a NB I-405 closure between the NB I-405 off-ramp to South Coast Drive and the NB I-405 on-ramp from Hyland Avenue.

The NB I-405 closure is set for 11 p.m. Friday, March 4, to 7 a.m. Saturday, March 6.

The NB I-405/SR-73 connector will also close at 11 p.m.

REMINDER! Southbound (SB) I-405 Closures for SB I-405/SR-73 Connector to Continue

Crews will close SB I-405 between the SB I-405 off-ramp to Harbor Boulevard and the SB I-405 on-ramp from Bristol Street to install the falsework for the SB I-405/SR-73 connector bridge.

The nightly SB I-405 closures are ongoing 11 p.m. to 5 a.m. through Friday, March 11, on weeknights.

REMINDER! Nightly Brookhurst Street Bridge and Ramp Closures for a Retaining Wall and Utility Work Continue

Crews will close the Brookhurst Street bridge and ramps nightly, for retaining wall and utility work.

The nightly closure is anticipated to continue, 10 p.m. to 5 a.m. TONIGHT, Wednesday, March 2.

OPENING SOON! Southbound I-405 On-Ramp from Seal Beach Boulevard is Anticipated to Open Soon

Crews closed the southbound (SB) I-405 on-ramp from Seal Beach Boulevard on Wednesday, Feb. 2, to accommodate the freeway widening.

The ramp is anticipated to reopen later this week.

REMINDER! Southbound I-405 Off-Ramp to Goldenwest Street/Westminster Mall Road Closed for Approximately Six Weeks

Crews closed the southbound (SB) I-405 off-ramp to Goldenwest Street/Westminster Mall Road on Monday, Jan. 31, to accommodate the freeway widening.

The ramp is anticipated to reopen after approximately four more weeks.

REMINDER! Westbound (WB) SR-22 On-Ramp from Old Ranch Parkway Closure to Extend for Approximately Six Weeks

Crews closed the Old Ranch Parkway on-ramp to WB SR-22 on April 13, 2021. The ramp will be closed for an additional six weeks due to unforeseen site conditions, to address complexities with traffic staging, and to accommodate the freeway widening.

The ramp is anticipated to reopen in spring 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

Almond Avenue

REMINDER! Crews are constructing the sound walls along northbound I-405, adjacent to Almond Avenue. The block portion of the wall is anticipated to start construction in spring 2022.

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.

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

Springdale Street

REMINDER! Crews will begin demolishing the concrete barrier of the old Springdale Street bridge in the center median of the freeway.

The work is anticipated to begin as early as Wednesday, March 2, 7 a.m. to 4 p.m. for approximately two weeks on weekdays.

Intermittent nighttime lane reductions on I-405 are anticipated to load out materials.

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 405 Community Outreach Team will provide updates on the bridge when more activities are scheduled.

Bolsa Avenue

REMINDER! Crews are constructing the sound wall along southbound (SB) I-405, between the Bolsa Avenue bridge and the railroad.

Activities include soil backfill and compaction, placing concrete forms, and pouring concrete.

Construction is ongoing, 7 a.m. to 4 p.m. on weekdays and Saturdays, as needed for approximately one week.

This work will also include intermittent nighttime lane reductions on SB I-405, between Bolsa Avenue and McFadden Avenue.

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.

Beach Boulevard

NEW! Crews will shift K-rail and restripe lanes on Beach Boulevard between Edinger Avenue and McFadden Avenue. This work will require lane reductions on Beach.

Northbound and southbound Beach lane reductions are scheduled for approximately midnight Friday, March 11, to 7 a.m.

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

Newland Street

NEW! Crews are demolishing the concrete barrier and columns from the old Newland Street bridge in the center median of the freeway.

The work is ongoing, 7 a.m. to 4 p.m. for approximately two weeks on weekdays.

Intermittent nighttime lane reductions on I-405 are also anticipated for this work.

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.

Heil Avenue

REMINDER! Crews will install piles for the foundation of a sound wall along southbound (SB) I-405, adjacent to homes that are near the Heil Avenue pedestrian bridge.

The foundation consists of 42 cast-in-drilled-hole (CIDH) piles. Crews will use an auger to drill large holes, install forms and steel cages and pour concrete into the holes to form the piles.

Following these activities, crews will begin constructing the footing, placing rebar, and pouring concrete to construct the wall.

The pile installation is ongoing, 7 a.m. to 4 p.m. for approximately three more weeks on weekdays, and Saturdays, as needed.

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.

I-405/SR-73 HOV Connector

REMINDER! Crews are working on the foundation of the southbound (SB) I-405/SR-73 HOV connector bridge. The foundation consists of 8 cast-in-drilled hole (CIDH) and 35 steel pipe piles.

The CIDH activity includes installing large-diameter casings approximately 200 feet into the ground.

The steel pipe piles will be driven into the soil until reaching a hard layer of earth beneath the structure foundation.

Pile installation activities are ongoing and will continue 7 a.m. to 4 p.m. on weekdays and weekends, as needed, through Spring 2022.

Daytime and nighttime lane reductions on SB I-405, between SR-73 and Bear Street are anticipated to support the work.

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.