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I-405 Improvement Project construction alert: Week of June 24

 

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.

Additional Closures:

  • SB I-405 loop on-ramp from Harbor Boulevard
  • NB I-405 loop on-ramp from Harbor Boulevard

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 Wednesday, June 26 to Monday, July 1: 10 p.m. to 5 a.m. 
  • NB Harbor Boulevard, the NB I-405 loop on-ramp from Harbor Boulevard will be closed, and the left lane on SB Harbor Boulevard will be closed. 
As early as Monday, July 1 to Tuesday, July 2, and again on Monday, July 8 to Thursday, July 11: 10 p.m. to 5 a.m.  
  • SB Harbor Boulevard, the SB I-405 loop on-ramp from Harbor Boulevard, and the left lane on NB Harbor Boulevard will be closed. 
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
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 southbound (SB) side of I-405. SB I-405 will be fully closed between Magnolia Street and Warner Avenue.

Additional Closure:

  • SB I-405 loop on-ramp from Magnolia 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
Ongoing, through Tuesday, July 2, 11 p.m. to 5 a.m., on weeknights.

This work also will require the closure of northbound I-405. The schedule for that closure will be included in a future construction alert.
 
Detour
SB I-405 Detours:
  • Detour No. 1: Exit SB I-405 at Magnolia Street → Warner Avenue → Warner Avenue on-ramp
  • Detour No. 2: Exit SB I-405 at Beach Boulevard → Warner Avenue → Warner Avenue on-ramp
SB I-405 loop on-ramp from Magnolia Street Detour:
Magnolia Street → Warner Avenue → SB I-405 straight on-ramp
 
 
 

What
Striping operation 
Where
Bolsa Avenue will be closed between Goldenwest Street and Chestnut Street.

When
As early as 10 p.m. Thursday, June 27, to 5 a.m. Friday, June 28
 
Detours
Eastbound Bolsa Avenue Detour:
Bolsa Avenue → Goldenwest Street → Hazard Avenue → Hoover Street or Beach Boulevard → Bolsa Avenue

Westbound Bolsa Avenue Detour:
Bolsa Avenue → Beach Boulevard → Hazard Avenue → Goldenwest Street → Bolsa Avenue
 



 

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
  • As early as 11 p.m. Monday, July 1 to 5 a.m. Tuesday, July 2: SB I-405 and the SB I-405 loop on-ramp from SB Goldenwest Street will be closed
  • As early as 11 p.m. Tuesday, July 2 to 5 a.m. Wednesday, July 3: NB I-405 and the NB I-405 loop on-ramp from NB Goldenwest Street will be closed 
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
Vegetation removal activities 
Where
NB Bushard Street, between Slater Avenue and Warner Avenue

The outside lane will be closed intermittently between I-405 and the entrance to the alley for the shopping plaza on Bushard Street/Warner Avenue so that crews can navigate their vehicles in and out of the work zone.

When
Ongoing, through Friday, June 28, 6:30 a.m. to 4 p.m., on weekdays
 
 
 
 

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

When
Ongoing through Friday, June 28, 6:30 a.m. to 4 p.m.
 
Warner Avenue will be reduced to one lane in each direction, between Brookhurst Street and Bushard Street
 
 
 
 

What
Concrete placement for the new McFadden Avenue bridge
Where
SB I-405 at McFadden Avenue
When
As early as Thursday, June 27 and again on Friday, July 5: 10 p.m. to 6 a.m.
 
This work may require freeway lane closures, which can only be done at night.
 
Crews will haul out materials using their main haul route:
Beach Boulevard → McFadden Avenue
 
 
 

What
Settlement fill construction
Where
Adjacent to SB I-405 bridge over the Santa Ana River bridge near Moon Park
When
Ongoing through, Friday, June 28, 9 p.m. to 6 a.m. on weeknights
 
Some activities will also occur during the day.
 
 
 
 

What
Ocean View channel widening 
Where
NB I-405, between Warner Avenue and Magnolia Street
When
Ongoing through Friday, July 12,  7 a.m. to 4 p.m. on weekdays 
 
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
Beginning as early as Wednesday, June 26, 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 and steel plate installation for temporary shoring
Where
Adjacent to Westminster Boulevard, on the NB and SB sides of I-405
When
Ongoing through Friday, June 28: 6:30 a.m. to 4 p.m., on weekdays
 
Crews may conduct pile installation activities at night.
 
 

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

 

SB Bushard Street will be reduced to one lane between Warner Avenue and La Luna Avenue intermittently.
When
As early as Monday, June 24, 6:30 a.m. to 4 p.m., 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
Beginning as early as Monday, June 24, 6:30 a.m. to 4 p.m.,  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
As early as Monday, June 24, 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 anticipated to begin as early as 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.