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I-405 Improvement Project construction alert: Week of July 1

Happy Independence Day!

In an effort to ease holiday travel, there will be no closures from Wednesday, July 3 through Sunday, July 7. Construction activities will resume on Monday, July 8.

 

What
Crews will demolish a portion of the I-405 bridge over Harbor Boulevard.
Where
The southbound I-405 bridge over Harbor Boulevard and Harbor Boulevard between the northbound and southbound freeway ramps.

 

This work will also require lane closures on SB I-405, but not full freeway closures.

Detours will be in place, and signs will be posted to guide motorists around the closures. Motorists should expect delays and use alternate routes if possible.
When

As early as 10 p.m. tonight, Friday, June 28 to 5 a.m. Saturday, June 29
 
The complete list of closures anticipated for the night of June 28 are:
  • NB Harbor Boulevard, between the NB and SB I-405 ramps;
  • NB I-405 loop on-ramp from Harbor Boulevard;
  • Left lane on SB Harbor Boulevard, between the NB and SB I-405 ramp;
  • SB Harbor Boulevard, between the SB and NB I-405 ramps;
  • SB loop on-ramp from Harbor Boulevard; and
  • Left lane on NB Harbor Boulevard, between the SB and NB I-405 ramps
On the night of June 28, NB and SB closures will not be implemented concurrently. Crews will implement NB closures first and then switch to SB closures as early as midnight.
Detours

NB Harbor Boulevard Detours:

  • Detour No. 1: EB Baker Street → NB Fairview Road → WB South Coast Drive → NB Harbor Boulevard
  • Detour No. 2: EB Baker Street → NB Fairview Road → WB Sunflower Avenue → NB Harbor Boulevard

NB I-405 loop on-ramp from Harbor Boulevard Detour:
Baker Street → Fairview Road → South Coast Drive → Harbor Boulevard straight on-ramp

SB Harbor Boulevard Detours:

  • Detour No. 1: EB Sunflower Street → SB Fairview Road → WB Baker Street → SB Harbor Boulevard
  • Detour No. 2: EB South Coast Drive → SB Fairview Road → WB Baker Street → SB Harbor Boulevard


SB I-405 loop on-ramp from Harbor Boulevard Detour:
South Coast Drive → Fairview Road → SB I-405

 

 

What
Crews are restriping lanes on Bolsa Avenue to make room for pile installation activities for temporary shoring.

Once complete, Bolsa Avenue will remain open with two lanes in each direction.
Where
Bolsa Avenue will be closed between Goldenwest Street and Chestnut Street.
 
When
As early as 10 p.m. Monday, July 1, to 2 a.m. Tuesday, July 2 
 
Detour
The following are additional closures that are anticipated: 
  • SB 405 on-ramp from Bolsa Avenue 
  • SB405 loop off-ramp to Bolsa Avenue
  • NB 405 off-ramp to Bolsa Avenue
All closures and detours can be viewed in our interactive map, on our closure list.
 
 


 

What
Falsework construction, which includes installing timber and steel beams to support construction of the new Magnolia Street bridge.
Where

Adjacent to Magnolia Street, on the northbound (NB) side of I-405. NB I-405 will be fully closed between Magnolia Street and Warner Avenue.

Additional Closure:

  • NB I-405 loop on-ramp from Magnolia Street
  • NB I-405 on-ramp from Warner Avenue

Detours will be in place, and signs will be posted to guide motorists around the closures. Motorists should expect delays and use alternate routes if possible.
 
When
As early as Monday, July 1 to Tuesday, July 2: 11 p.m. to 5 a.m. 
 
As early as Monday, July 8 to Friday, July 12: 11 p.m. to 5 a.m.
 
Detour
NB I-405 Detour:
Warner Avenue → Beach Boulevard → Beach Boulevard on-ramp 
 
NB I-405 loop on-ramp from Magnolia Street Detour:
Magnolia Street → Edinger Avenue → NB I-405 on-ramp from Beach Boulevard
 
NB I-405 on-ramp from Warner Avenue:
Warner Avenue → NB I-405 on-ramp from Beach Boulevard
 
 
 


 

What
Falsework construction, which includes installing timber and steel beams to support construction of the new Goldenwest Street bridge.
Where
Adjacent to Goldenwest Street, on the NB side of I-405. NB I-405 will be closed between Bolsa Avenue and Goldenwest Street, and SB I-405 will be closed between Springdale Street and Goldenwest Street. These closures will not happen concurrently.
 
Additional Closures
  • NB I-405 loop on-ramp from NB Goldenwest Street
  • SB I-405 loop on-ramp from SB Goldenwest Street
Detours will be in place, and signs will be posted to guide motorists around the closures. Motorists should expect delays and use alternate routes if possible.

When
These closures have been postponed to a later date.
Detour

SB I-405 Detours:

  • Detour No. 1: SB I-405 → SB I-405 off-ramp onto Westminster Mall Road → EB Westminster Mall Road → SB Goldenwest Street →EB Bolsa Avenue → SB I-405 on-ramp
  • Detour No. 2: SB I-405 → SB I-405 off-ramp onto Westminster Mall Road → 
    EB Westminster Mall Road → SB Goldnwest Street → EB Edinger Avenue →
    SB I-405 on-ramp
NB I-405 Detours:
  • Detour No. 1: Exit Bolsa Avenue → Edwards Street → Westminster Boulevard → NB
    I-405
  • Detour No. 2: Exit Bolsa Avenue → Springdale Street → Westminster Boulevard → NB
    I-405
 
 
 







 

What
Electrical work and street improvements
Where
Warner Avenue, between Brookhurst Street and Bushard Street

When
Ongoing, through Fall 2019, 6:30 a.m. to 4 p.m., on weekdays and Saturdays
 
Warner Avenue will be reduced to one lane intermittently between Brookhurst Street and Bushard Street
 
 
 
 

What
Concrete placement for the new McFadden Avenue bridge
Where
Along NB and SB I-405 at McFadden Avenue
When
As early as 10 p.m., Friday, June 28 to 6 a.m., Saturday, June 29: Crews will place concrete on the NB side of I-405, north of McFadden Avenue
 
As early as 10 p.m., Wednesday, July 3 to 6 a.m., Thursday, July 4: Crews will place concrete on the SB side of I-405, adjacent to McFadden Avenue
 
Crews will haul out materials using their main haul route:
Beach Boulevard → McFadden Avenue
 
 
 

What
Ocean View channel widening 
Where
NB I-405, between Warner Avenue and Magnolia Street
When
Ongoing, 7 a.m. to 4 p.m. on weekdays for approximately one month
 
Crews may also work at night.
 
 
 
 

What
Bridge construction activities
Where
NB Bolsa Chica Road will be reduced to one lane intermittently between Duncannon Avenue and Garden Grove Boulevard
When
Ongoing, 9 a.m. to 3 p.m., on weekdays
 
 
 
 

What
Bridge construction activities
Where
NB Magnolia Street will be reduced to one lane intermittently between the Boomers driveway and Heil Avenue
When
Ongoing, 9 a.m. to 3 p.m., on weekdays
 
 
 

What
Daytime pile installation activities
Where
Adjacent to the Fairview Road bridge on the NB and SB sides of I-405, and in the center median of the freeway.
When
As early as Monday, July 1, 6:30 a.m. to 4 p.m., for approximately two months, on weekdays and Saturdays.
 
Crews may conduct pile installation activities at night.
 
 
 

What
Daytime pile and steel plate installation for temporary shoring
Where
Adjacent to Bolsa Avenue, on the NB and SB sides of I-405
When
Ongoing through Friday, July 12, 6:30 a.m. to 4:30 p.m., on weekdays.
 
Crews may conduct pile installation activities at night.
 
 
 

What
Daytime pile installation activities
Where
Adjacent to Westminster Boulevard, in the center median of the freeway
When
As early as Tuesday, July 2, 7 a.m. to 4 p.m., for approximately two weeks, on weekdays
 
Crews may conduct pile installation activities at night.
 
Activities will be suspended on Thursday, July 4, due to the Independence Day holiday.
 
 

What
Underground utility work
Where
SB Bushard Street, between Warner Avenue and La Luna Avenue

 

SB Bushard Street will be reduced to one lane intermittently between Warner Avenue and La Luna Avenue.
When
Ongoing as of Monday, June 24, 6:30 a.m. to 4 p.m., and will continue for approximately two weeks, on weekdays
 
Crews may also work at night.
 
 

What
Underground utility work
Where
On Heil Avenue, adjacent to NB I-405
When
Ongoing as of Monday, June 24, 6:30 a.m. to 4 p.m., and will continue for approximately two months
 
Crews may also work at night.
 
The work zone will be in the alley adjacent to the pedestrian overcrossing.
 
 
 

What
Underground utility work
Where
On the Goldenwest Street bridge over I-405, between Sowell Avenue and just north of Bolsa Avenue.
When
Ongoing, 7 a.m. to 4 p.m., on weekdays, through mid-December
 
Crews may also work at night.
 
 

What
Crews will demolish the remainder of the existing sound wall adjacent to SB I-405 along Milan Street.

A new sound wall is being constructed as part of the improvement project.

Please be advised that this work may be loud.
Where
Southbound I-405, along Milan Street, between Bolsa Chica Road and Stratford Avenue.
 
When
Demolition activities are ongoing as of Monday, June 24

 

Activities will occur approximately 7 a.m. to 4 p.m. and 10 p.m. to 5 a.m.

 

Crews will haul out materials behind freeway lane closures, which can only be done at night.

 

 
 

What
Crews are working on the foundation of the new wall.
Where
SB I-405, adjacent to Bolsa Chica Road
When
Ongoing, 7 a.m. to 4 p.m., on weekdays 
 
Crews may also work at night.
 
 
 
 

What
Crews will continue to demolish the remainder of the existing sound wall adjacent to SB I-405 between Milan Street and Springdale Street.

A new sound wall is being constructed as part of the improvement project.

A temporary sound barrier will be in place during construction of the new sound wall.

Please be advised that this work may be loud.
Where
Southbound I-405 between Milan Street and Springdale Street.
 
When
Demolition activities are ongoing as of Tuesday, May 28.

Activities will occur approximately 6:30 a.m. to 4 p.m. and 10 p.m. to 5 a.m.

Crews will haul out materials behind freeway lane closures, which can only be done at night.
 
 

What
Crews demolished the majority of the sound wall adjacent to NB I-405 between Springdale Street and Valley View Street.

A new sound wall is being constructed as part of the improvement project. 

A temporary sound barrier will be in place for the duration of construction of the new sound wall.
 
Please be advised that this work may be loud. 
Where
NB I-405, between Springdale Street and Valley View Street.
 
When
Demolition activities are ongoing as of Monday, May 6. 

Activities will occur approximately 6:30 a.m. to 4 p.m. and 10 p.m. to 5 a.m. 

Crews will haul out materials behind freeway lane closures, which can only be done at night.
 
 

What
Crews are working on the foundation for the new wall and loading out material.

 

Where
Along SB I-405 near Talbert Avenue, adjacent to LA Fitness

When
Ongoing, during the day and at night on weekdays
 
 
 
 

What
Crews are working on the foundation for the new wall and loading out material.

 

Where
Milan Street, between approximately Stratford Avenue and 200 feet south of Lowell Circle.

When
Ongoing, during the day and at night on weekdays 
 
 

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.

To view all project closures and detours, please visit the interactive map  or click here for a pdf list. 
 
This article was released by the Orange County Transportation Authority.