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

I-405 Improvement Project construction alert: Week of July 26

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! Brookhurst Street Bridge Waterline Installation

Crews will begin installing a waterline in the Brookhurst bridge over I-405. This work will require bridge and ramp closures.

Brookhurst will be closed in both directions 10 p.m. Thursday, July 29, to Friday, July 30. The freeway ramps will also be closed.

Northbound (NB) Brookhurst will be closed 10 p.m. to 5 a.m. Friday, July 30, through Wednesday, Aug. 4, on weeknights. Southbound (SB) Brookhurst will be reduced to one lane, and the freeway ramps will be closed.

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

REMINDER! Fairview Road Bridge Girder Installation

Crews will install pre-cast concrete girders for the Fairview bridge over I-405. The girders are the main horizontal support beams and are part of the superstructure.

This work will require full bridge, freeway and ramp closures in late July.

The Fairview bridge will be closed between McCormack Lane and South Coast Drive and NB I-405 will be closed between SR-73 and Fairview:

  • 11 p.m. Thursday, July 29, to 5:30 a.m. Friday, July 30

The Fairview bridge will be closed between McCormack Lane and South Coast Drive and I-405 will be closed between SR-73 and Fairview:

  • 11:30 p.m. Friday, July 30, to 8 a.m. Saturday, July 31.

The Fairview bridge will be closed between McCormack Lane and South Coast Drive and I-405 will be closed between SR-73 and Fairview:

  • 11:30 p.m. Saturday, July 31, to 9 a.m. Sunday, Aug. 1.

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

COMING SOON! Fairview Road False Deck and Overhang Installation

Crews will install a false deck and overhang for the Fairview bridge over I-405.

This work will require full bridge, freeway and ramp closures after the Fairview girder installation beginning as early as Monday, Aug. 2.

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! Edwards Street Bridge Falsework Removal

Crews are removing the falsework from the Edwards bridge over I-405. This work will require NB and SB I-405 closures.

The NB I-405 closures will continue 11 p.m. to 5 a.m.:

  • Wednesday, July 28; and
  • Thursday, July 29*.

The SB I-405 closures will continue 11 p.m. to 5 a.m.:

  • Thursday, July 29*;
  • Monday, Aug. 2;
  • Tuesday, Aug. 3;
  • Wednesday, Aug. 4; and
  • Thursday, Aug. 5.

*Only one direction is planned to be closed, If NB work has not been completed, it will be closed. Otherwise, SB will be closed.

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

REMINDER! SB I-405 Loop On-Ramp from Euclid Street to Close for Approximately One Month

Crews will close the SB I-405 loop on-ramp from Euclid Street for approximately one month to accommodate the freeway widening.

Activities include removal of the existing ramp, excavation, placement and compaction of base material, rebar and concrete work, paving, drainage installation, electrical work and striping.

The ramp is set to close on 10 p.m. Monday, Aug. 2, for approximately one month.

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

COMING SOON! SB I-405 Loop On-Ramp from Magnolia Street to Reopen

Crews are set to reopen the SB I-405 loop on-ramp from Magnolia by early to mid-August. The ramp was closed to accommodate the freeway widening.

COMING SOON! NB Euclid Street

Crews will perform maintenance work on Euclid Street. This work will require NB Euclid Street closures in mid-to late August.

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

UPDATE! Magnolia Street Closures for Maintenance Work

Crews will continue to perform maintenance work for the Magnolia bridge over I-405 early next week.

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

REMINDER! I-405 Lane Reductions for Goldenwest Street Bridge Continue

Crews will continue excavating and installing piles for the center median of the Goldenwest Street bridge over the I-405. This requires NB and SB I-405 lane reductions between Bolsa Avenue and Goldenwest.

The lane reductions will continue, 5 a.m. to 12 p.m., for approximately four weeks.

REMINDER! Euclid Street for Traffic Signal Work

Crews are performing traffic signal and street restoration activities at the Euclid/Newhope Street intersection.

This work requires intermittent lane reductions on NB Euclid and westbound Newhope.

The intermittent lane reductions are ongoing 9 p.m. to 5 a.m., through Friday, July 30.
Click to see closures and detours on the interactive map.

REMINDER! Bolsa Chica Road Traffic Signal Work

Crews will begin support activities in anticipation of sound wall construction in early August. This work includes relocating the temporary concrete barriers and fencing along NB Bolsa Chica.

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

REMINDER! NB I-405 Off-Ramp to Susan Street Closed for Approximately One Month

Crews closed the NB I-405 off-ramp to Susan on July 14, for approximately one month to accommodate the freeway widening.

REMINDER! Northbound (NB) I-405 Loop Off-Ramp to Bolsa Avenue Closed for Approximately Three Months

Crews closed the NB I-405 loop off-ramp to Bolsa on June 18, for approximately three months to accommodate the freeway widening.

REMINDER! Westbound (WB) SR-22 On-Ramp from Old Ranch Parkway Closed for Approximately 8 Months

Crews closed the Old Ranch Parkway on-ramp to the WB SR-22 on April 13, forapproximately five more months to accommodate the freeway widening.

Activities include demolition, excavation, grading, drainage and electrical system installation, concrete pours and asphalt paving.

  • Daytime work hours are 7 a.m. to 4 p.m.
  • Crews may mobilize equipment as early as 6 a.m.
  • Nighttime work hours are 9 p.m. to 6 a.m.

UPDATE! Sidewalk Closures on Seal Beach Boulevard for Signal Work

Crews closed the sidewalks at the intersection of Seal Beach Boulevard and Lampson Avenue for permanent traffic signal construction.

Activities include the removal of existing sidewalk ramps, installation of new sidewalk ramps, electrical and foundation work.

Permanent traffic signal construction began Tuesday, June 1, and will continue for approximately two more months on weekdays.

  • Daytime work hours are 9 a.m. to 3 p.m.

Seal Beach Boulevard and Lampson will be intermittently reduced to two lanes at the intersection for the duration of the work.

Nighttime temporary traffic signal removal and permanent pole installation are anticipated in early-July.

REMINDER! SB I-405 Off-Ramp to Bolsa Chica Road Closed for Approximately One Year

Crews closed the SB I-405 off-ramp to Bolsa Chica on Oct. 27, 2020, for approximately four more months to advance construction on the Bolsa Chica bridge.

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 set to work on the foundation of a wall along Almond Avenue between Dahlia Circle and
Jasmin Circle, adjacent to NB I-405. The foundation consists of approximately 250 cast-in-drilled-hole (CIDH) piles.

This activity includes augering large holes, and installing forms
and steel cages and pouring concrete into the holes to form the piles.

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

Beginning as early as Monday, Aug. 2, 7 a.m. to 4 p.m. on weekdays and Saturdays, as needed for approximately two and a half months.

Nighttime activities may also occur between 9 p.m. to 6 a.m.

Crews may mobilize equipment as early as 6 a.m., and some activity may occur at night.

Please be advised that this work may be loud.

I-405 near Bolsa

UPDATE! Crews will begin installing piles for the widened I-405 bridge over the railroad along SB I-405 between Bolsa Avenue and McFadden Avenue.

This work began Wednesday, July 28, 7 a.m. to 4 p.m.,and will continue on weekdays for approximately two weeks.

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

Please be advised that this work may be loud.

East Garden Grove Channel

COMING SOON! Crews will begin installing piles for the foundation of the East Garden Grove Channel near the Newland Street bridge is set to resume soon.

This activity will require daytime lane reductions on SB I-405 between Edinger Avenue and Newland Street.

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

Goldenwest Street

REMINDER! Crews will continue installing piles for the Goldenwest bridge over I-405.

Ongoing 7 a.m. to 4 p.m., for approximately two weeks. Nighttime activities may also occur between 9 p.m. to 6 a.m.

Crews may mobilize equipment as early as 6 a.m., and some activity may occur at night.

Please be advised that this work may be loud.

Milan Street

COMING SOON! Sidewalk, curb and gutter work along Milan between approximately Stratford Avenue and Lowell Circle has been postponed.

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

Please be advised that this work may be loud.

Westminster Boulevard

REMINDER! Crews will continue installing piles for the foundation from the center median of the Westminster Boulevard bridge.

Ongoing 7 a.m. to 4 p.m., for approximately two weeks. Nighttime activities may also occur between 9 p.m. to 6 a.m.

Crews may mobilize equipment as early as 6 a.m., and some activity may occur at night.

Please be advised that this work may be loud.

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.