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888-662-6569.
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To view and print a detailed list of closures and detours CLICK HERE!
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UPDATE! Westminster Boulevard
Traffic Shift
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Crews will shift traffic to the new Westminster bridge over I-405. The shift will occur in three phases and will require lane reductions.
Phase 1
Eastbound Westminster will be reduced to one lane between Springdale Street and Willow Lane from 9:30 p.m. Monday, Jan. 11, to 6 a.m. Tuesday, Jan. 12. Eastbound traffic will be shifted onto the new bridge at 6 a.m. Tuesday, Jan. 12.
Phase 2
Crews will construct the center median beginning Tuesday, Jan. 12, 7 a.m. to 4 p.m. on weekdays and Saturdays for approximately two weeks.
Phase 3
Westminster will be reduced to one lane in each direction between Springdale Street and Willow Lane from 9:30 p.m. Monday, Jan. 25, to 6 a.m. Tuesday, Jan. 26. Westbound traffic will be shifted onto the new bridge at 6 a.m. Tuesday, Jan. 26.
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. Dates and times may change due to unforeseen operational factors or inclement weather.
Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
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COMING SOON! Fairview Road Traffic Shift
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Crews also will soon shift traffic to the new half of the Fairview bridge over I-405 and begin working on the second half of that bridge. The traffic shift is set for early-to-mid February and will require bridge and ramp closures.
Demolition of the second half of the bridge will occur over two weekends, under full freeway closures and is set for late February.
The 405 Community Outreach Team will provide detailed schedule, closure, detour information in future alerts.
Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
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NEW! Full Southbound (SB) and Northbound (NB) Freeway Closures for Talbert Falsework Removal
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Crews are scheduled to remove the falsework at the Talbert bridge over I-405. This work will requires full SB and NB freeway closures between Brookhurst Street and Euclid Street.
SB nightly full freeway closures are set for 10 p.m. to 5:30 a.m.:
- Monday, Jan. 11
- Tuesday, Jan. 12 and again
- Monday, Jan. 18 through Thursday, Jan. 21
NB nightly full freeway closures are set for 10 p.m. to 5:30 a.m.:
- Wednesday, Jan. 13
- Thursday, Jan. 14
Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
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NEW! Euclid Street Full Closure
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Crews will close Euclid Street between Newhope Street and Mount Washington Circle to perform excavation work on the sidewalk.
The closure is set for as early as 10 p.m. Friday, Jan. 8, to 5 a.m., Saturday, Jan. 9.
The detour is:
- Euclid → Talbert Avenue → Mount Washington
In addition, crews will close the northbound (NB) Euclid sidewalk between Mount Washington and Newhope Street, for approximately three to five months. Pedestrians and bicyclist can use the southbound Euclid as a detour.
Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
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COMING SOON! Bolsa Avenue Full Closure for Concrete Work
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Crews will begin concrete work for a retaining wall along eastbound (EB) Bolsa Avenue. This work may require closures of Bolsa between Goldenwest Street and Chestnut Street.
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.
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NEW! Full Northbound (NB) and Southbound (SB) Harbor Boulevard Closure for Concrete Work
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Crews will pour concrete for the widened
I-405 bridge over Harbor. This work will require a full closure of Harbor between the I-405 ramps.
The closure is set for Friday, Jan. 15. from 10 p.m. to 5 a.m.
*The SB I-405 on-ramp from Harbor will be reopened for this work.
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REMINDER! Southbound (SB) I-405 On-Ramp from Harbor Boulevard Closed for Approximately One Month
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Crews closed the southbound (SB) I-405
on-ramp from Harbor Boulevard for approximately one month to advance construction for the SB I-405 to SB SR-73 connector.
Additionally, crews closed two outside lanes on the SB I-405 to SB SR-73 connector to perform permanent pavement construction.
The ramp closed 10 p.m., Monday, Jan. 4.
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REMINDER! Northbound (NB) I-405 On-Ramp from South Coast Drive/Hyland Avenue to Close for Approximately Two Months
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Crews will close the NB I-405 on-ramp from South Coast Drive/ Hyland Avenue for approximately two months to accommodate the freeway widening.
Activities include demolition, excavation, grading, drainage and electrical system installation, concrete pours and paving.
The ramp is set to close as early as 10 p.m., Monday, Jan. 11.
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REMINDER! Southbound (SB) I-405 On-Ramp from Westminster Boulevard Closed for Approximately One Month
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Crews closed the SB I-405 on-ramp from Westminster Boulevard for approximately one month to accommodate the freeway widening.
Activities include demolition, excavation, grading, drainage and electrical system installation, concrete pours and paving.
The ramp closed 10 p.m. Tuesday, Jan. 5.
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REMINDER! Westminster Boulevard Sidewalk Closure
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Crews closed the sidewalk along eastbound Westminster Boulevard, between Springdale Street and Willow Lane.
The closure is needed to accommodate the southbound I-405 Westminster on-ramp extended closure as well as the bridge’s upcoming traffic shift.
A detour is in place for pedestrians and bicyclists to navigate around the closure.
The sidewalk closed 10 p.m. Tuesday,
Jan. 5, for approximately one week.
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REMINDER! Nightly Consecutive Ramp Closures Scheduled for Approximately Six Months
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Nightly closures of the following ramps will be scheduled as needed for six months to support bridge construction activities at Magnolia and Brookhurst:
- Southbound (SB) I-405 Loop On-Ramp from Magnolia
- SB I-405 On-Ramp from Warner Avenue
- SB I-405 Loop On-Ramp from Brookhurst
Closure hours are:
- 10 p.m. to 5 a.m. weeknights
- 10 p.m. to 7 a.m. weekends
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REMINDER! Nightly Southbound (SB) I-405 Freeway Closures for Bridge Work
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Nightly SB I-405 closures are scheduled to continue for Brookhurst Street bridge construction. Activities include equipment mobilization, pile installation, shoring installation, falsework installation and grading, and column demolition for the old half of the Brookhurst bridge.
SB I-405 will be closed between Magnolia and Brookhurst.
The nightly closures are set to continue
11 p.m. to 5 a.m. on weeknights for approximately three weeks, as needed.
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REMINDER! Southbound (SB) I-405 Off-Ramp to Bolsa Chica Road Closed for Approximately One Year
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Crews closed the SB I-405 off-ramp to Bolsa Chica Road on Dec. 3, 2020 for approximately one year to advance construction on the Bolsa Chica bridge.
Activities include demolition, excavation, grading, drainage and electrical system installation, concrete pours and asphalt paving.
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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.
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UPDATE! Crews are scheduled to pour concrete for the retaining wall along northbound (NB) Fairview Road, south of the on-ramp to SB I-405 and SB SR-73. This work will also require NB Fairview lane reductions.
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Concrete activities and lane reductions are set for as early as 10 p.m. to 5 a.m., Wednesday, Jan. 20.
Please be advised that this work may be loud.
REMINDER! Crews are scheduled to install temporary signals at Fairview. This work will require NB Fairview lane reductions between freeway ramps.
- Lane reductions are set for as early as 10 p.m. to 5 a.m., tonight, Wednesday, Jan. 6, to Friday, Jan. 8.
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UPDATE! Crews are scheduled to pour concrete for the retaining wall along southbound (SB) I-405, between the Santa Ana River and Harbor Boulevard. Additional activities include backfill, grading, and rebar for approximately two months.
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Concrete activities are set for 9 p.m. to 6 a.m. Monday, Jan. 11, Saturday, Jan. 16, and Thursday, Jan. 21.
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Block wall installation is anticipated to begin in early 2021. Work hours are scheduled for 7 a.m. to 4 p.m.
Crews may mobilize equipment as early as 6 a.m. and some activity may occur at night from 9 p.m. to 6 a.m. as needed.
Please be advised that this work may be loud.
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COMING SOON! Crews will install a waterline in the Talbert bridge over I-405 to accommodate the freeway widening.
The 405 Community Outreach Team will continue to provide detailed detour and schedule information in future alerts.
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REMINDER! Crews will continue installing piles for the foundation of the Brookhurst bridge over I-405, adjacent to Brookhurst. Approximately 130 piles will be used.
- Ongoing 7 a.m. to 4 p.m. on weekdays and Saturdays, for approximately two months.
Crews may mobilize equipment as early as 6 a.m. and some activities may occur at night.
Please be advised that this work may be loud.
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NEW! Crews will close the southbound (SB) I-405
on-ramp from Warner Avenue to perform utility work.
The ramp is set to close as early as 9 a.m. to 7 p.m., Monday, Jan. 11.
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REMINDER! Crews continue construction activities for the Heil pedestrian bridge over I-405. Activities include excavation, shoring, and pile driving to continue forming the foundation of the bridge.
Following this work, crews will begin forming the footings and columns, as well as construct the falsework to form the spans over the freeway.
This work requires an extended closure of Heil between Ross Lane and Landau Lane.
The closure began on Wednesday, Dec. 30, and is expected to continue for approximately seven months.
Residential access will be maintained at all times.
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REMINDER! A section of Sugar Drive between Cascade Lane and Rushmoor Lane is being closed daily so crews can perform utility work.
Daily closures are set to continue 8 a.m. to 4:30 p.m., for approximately one month.
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REMINDER! Crews will continue installing piles along northbound and southbound I-405 for the foundation of the new Edinger Avenue bridge. Approximately 150 piles will be used.
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Ongoing 7 a.m. to 4 p.m. on weekdays for approximately one month.
Crews may mobilize equipment as early as 6 a.m. and some activities may occur at night.
Please be advised that this work may be loud.
REMINDER! Crews will continue demolishing the remainder of the Edinger bridge over I-405. Upcoming activities include removing the bridge columns in the center median of the freeway.
This work requires southbound (SB) I-405 lane closures at night, as needed.
- Demolition activities began as early as 7 a.m. to 4 p.m., Wednesday, Jan. 6, and continue for approximately one week.
Crews may mobilize equipment as early as 6 a.m. and some activity may occur at night from 9 p.m. to 6 a.m. as needed.
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REMINDER! Crews will continue installing falsework along northbound (NB) I-405 adjacent to the railroad for approximately one month to accommodate the freeway widening.
Activities include installation of steel and wooden falsework and mobilization of equipment.
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Ongoing 7 a.m. to 4 p.m. on weekdays, for approximately one month.
Crews may mobilize equipment as early as 6 a.m. and some activities may occur at night.
Please be advised that this work may be loud.
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REMINDER! Crews will continue working on the foundation of the wall along southbound (SB) I-405, south of Bolsa Ave. The foundation consists of approximately 180 cast-in-drilled-hole (CIDH) piles. This activity includes augering large holes, and installing rebar cages and pouring concrete into the holes to form the piles.
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Ongoing 7 a.m. to 4 p.m. on weekdays and Saturdays, for approximately two months.
Crews may mobilize equipment as early as 6 a.m. and some activities may occur at night.
Please be advised that this work may be loud.
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NEW! Crews will begin installing piles for the foundation of Goldenwest bridge over I-405 along northbound and southbound I-405, adjacent to Goldenwest.
- Beginning as early as Monday, Jan. 11, 7 a.m. to 4 p.m. on weekdays, for approximately two months.
Crews may mobilize equipment as early as 6 a.m. and some activities may occur at night.
Please be advised that this work may be loud.
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COMING SOON! Crews will begin installing piles for the foundation of the center columns for the Bolsa Chica bridge over I-405, in the center median, west of the Bolsa Chica bridge.
The 405 Community Outreach Team will provide detailed schedule information in future alerts.
Please be advised that this work may be loud.
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Check out our new and improved website!
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Finding the latest information on construction activities is now easier than ever! Check out our new and improved website! octa.net/405improvement
#405Improvement
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