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I-405 Improvement Project construction alert: Week of June 17

 

What
Crews will demolish a portion of the I-405 bridge over Harbor Boulevard.
Where
The northbound (NB) and southbound (SB) bridge over Harbor Boulevard. SB and NB Harbor Boulevard will be closed between the Harbor Boulevard off-ramp from SB I-405 and the Harbor Boulevard off-ramp from NB I-405. The closures will not occur concurrently. 

 

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 Friday, June 28: 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. 
 
As early as Monday, July 1 to Tuesday, July 2, and again on Monday, July 8 to Wednesday, July 10: 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. 
Detours
SB Harbor Boulevard Detours:
  • Detour No. 1: EB Sunflower Street → SB Fairview Road → WB Baker Street →
    SB Harbor Boulevard
  • Detour No. 2: SB South Coast Drive → SB Fairview Road → WB Baker Street →
    SB Harbor Boulevard

 

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

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

 
 
 

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 Wednesday, June 19: 11 p.m. to 5 a.m.: NB I-405 will be closed between Bolsa Avenue and Goldenwest Street
 
As early as Thursday, June 20: 11 p.m. to 5 a.m.: SB I-405 will be closed between Springdale Street and Goldenwest Street
 
Detour
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
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
 
 






 

What
Concrete placement for the new McFadden Avenue bridge
Where
SB I-405 at McFadden Avenue
When
As early as Monday, June 24 and again on Wednesday, June 27: 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 5,  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 and steel plate installation for temporary shoring
Where
Adjacent to Bolsa Avenue, on the NB and SB sides of I-405
When
As early as Wednesday, June 19 to 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
As early as Wednesday, June 19 to Friday, June 28: 6:30 a.m. to 4 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 Harbor Boulevard, on the SB side of I-405
When
As early as Monday, June 17. 6:30 a.m. to 4 p.m.
 
Crews may also conduct work at night.
 
 
 
 

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.
 
This work was rescheduled from Monday, June 17 to Monday, June 24.
 
Goldenwest Street will be reduced to one lane in each direction to conduct the utility work this fall.
 
 
 

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 17

 

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.