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I-405 Improvement Project construction alert: Week of July 29, 2019



What
Crews will remove the falsework from the Slater Avenue bridge.
Where
Adjacent to Slater Avenue, on the NB and SB sides of I-405.

Closures:
  • NB I-405, between Brookhurst Street and Magnolia Street
  • NB I-405 loop on-ramp from NB Brookhurst Street
  • NB I-405 on-ramp from SB Brookhurst Street
  • SB I-405, between Magnolia Street and Brookhurst Street
  • SB I-405 loop on-ramp from Magnolia Street
  • SB I-405 on-ramps from EB and Warner Avenue
  • SB I-405 off-ramp onto SB Brookhurst Street
  • SB I-405 loop on-ramp from SB Brookhurst Street
NOTE: NB and SB closures will not be implemented concurrently.

 
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 29 to 5 a.m. Tuesday, July 30: NB closures.
 
As early as 11 p.m. Tuesday, July 30 to 5 a.m. Wednesday, July 31: SB closures.
Detour
NB I-405 and NB I-405 loop on-ramp from NB Brookhurst Street Detour:
NB Brookhurst Street → WB Warner Avenue → NB I-405

SB I-405 Detour:
SB Magnolia Street → EB Talbert Avenue → SB I-405
 


What
Crews will place K-rail and restripe lanes to establish a work zone in the center median of Harbor Boulevard under I-405. 
 
NB Harbor Boulevard will be reduced to three lanes from four between the I-405 freeway ramps.
 
This work supports the widening of I-405 over Harbor Boulevard. The lane reductions will be in place for approximately 18 months.
Where
Harbor Boulevard will be closed between the NB and SB I-405 freeway ramps.

Additional closures:

  • NB I-405 loop on-ramp from Harbor Boulevard 
  • SB I-405 loop on-ramp from Harbor Boulevard
NOTE: NB and SB closures will not be implemented concurrently.

 

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. Tuesday, July 30 to 2 a.m. Wednesday, July 31: NB Harbor Boulevard and the NB I-405 loop on-ramp from Harbor Boulevard will be closed.
 
As early as 2 a.m. Wednesday, July 31 to 5 a.m. Tuesday, July 31: SB Harbor Boulevard and the SB I-405 loop on-ramp from Harbor Boulevard will be closed.
 
Detour

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
 

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 


What
Crews closed the off-ramp from NB SR-73 to Harbor Boulevard/Susan Street. A new temporary off-ramp – only to Harbor – has been constructed a half-mile up the freeway.
Where
SR-73 connector to Harbor Boulevard/Susan Street off-ramp is closed

When
The temporary ramp will be in place for approximately two years.
Detour
NB SR-73 Harbor Boulevard/Susan Street Off-Ramp Detour:
Temporary NB I-405 Harbor Off-Ramp → NB Harbor → EB South Coast Drive → Susan Street


What
Concrete placement
Where
Goldenwest Street bridge over I-405

SB Goldenwest Street will be reduced to one lane between the I-405 freeway ramps
When
As early as 8 p.m. Wednesday, July 31 to 8 a.m. Thursday, Aug. 1


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

When
Ongoing, 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
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
 
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
Pile installation activities for temporary shoring and the foundation of the new bridge.
Where
Adjacent to the Bolsa Avenue bridge
When
Ongoing, 6:30 a.m. to 4 p.m., on weekdays.
 
Crews may conduct pile installation activities at night.

What
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
Ongoing, 6:30 a.m. to 4 p.m., on weekdays and Saturdays.
 
Crews may conduct pile installation activities at night.
 

What
Underground utility work
Where
Spencer Avenue, between Pacific Street and Langley Street


Crews reduced the width of Spencer Avenue, however, it remains open with one lane in each direction.

When
As early as a.m. to 4 p.m. Monday, July 29 to Friday, Aug. 6, on weeksdays
 
Crews may also work at night.

What
Underground utility work
Where
On Heil Avenue, adjacent to NB I-405
When
Ongoing, 6:30 a.m. to 4 p.m.
 
Crews may also work at night.
 
The work zone will be in the alley adjacent to the pedestrian overcrossing.
 

What
Crews are working on the foundation of the new wall and loading out material.
Where
NB I-405, between Westminster Boulevard and Springdale Street
 
When
Ongoing, 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 and loading out material.
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 demolished the remainder of the existing sound wall adjacent to SB I-405 between Milan Street and Springdale Street.

Crews are now working on the foundation of the new wall.

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
SB I-405, between Milan Street and Springdale Street
 
When
Ongoing, 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 remainder of the sound wall adjacent to NB I-405 between Springdale Street and Valley View Street.

Crews are now working on the foundation of the new wall.

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

When
Ongoing, during the day and at night on weekdays 
 
 

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

 

Crews are now working on the foundation of the new wall.

Please be advised that this work may be loud.
Where
Milan Street, between Bolsa Chica Road and Stratford Avenue
 
When
Ongoing, 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.

 

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.