405 “Improvement” Project for Week of Jan. 28

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Demolition Activities

Magnolia Street

What: Partial demolition of the Magnolia Street bridge will continue. Crews will demolish a portion of the bridge over I-405.
Where: The Magnolia Street bridge over southbound I-405. The Magnolia Street bridge will be closed during the nighttime demolition.

Additional closures:

  • Northbound I-405 loop on-ramp from Magnolia Street will be closed.
  • Southbound I-405 loop on-ramp from Magnolia Street will be closed.
  • Northbound I-405 on-ramp from Warner Avenue will be closed.
  • Northbound I-405 off-ramp to Magnolia Street will be closed.
  • Northbound I-405 right two lanes at Magnolia Street will be closed.
  • Northbound I-405 collector-distributor road from Warner Avenue will be closed.

When: 10 p.m. Friday, Jan. 25, to 8 a.m. Saturday, Jan. 26.
Why: As part of the I-405 Improvement Project, which adds a general purpose lane and a tolled Express Lane facility in each direction, 18 bridges must be replaced.

Magnolia Street Detours

Southbound Magnolia Street Detour:

  • Westbound Edinger Avenue -> Left to Beach Boulevard -> Left to Warner Avenue
  • Eastbound Edinger Avenue -> Right to Bushard Street -> Right to Warner Avenue

Northbound Magnolia Street Detour:

  • Westbound Warner Avenue -> Right to Beach Boulevard -> Right to Edinger Avenue
  • Eastbound Warner Avenue -> Left to Bushard Street -> Left to Edinger Avenue

Wall Construction Activities

Milan Street

What: Crews will demolish the existing I-405 sound wall and sidewalk adjacent to Milan Street. A temporary noise barrier will be installed while the new sound wall is under construction. The new sound wall will be approximately 15 feet high on the Milan Street side of the wall. A new sidewalk also will be constructed.

Please be advised that this work may be loud.

Where: Milan Street, between approximately Stratford Avenue and 200 feet south of Lowell Circle
When: Ongoing, 7 a.m. – 4 p.m. on weekdays, demolition of the sound wall and sidewalk; construction of the new sound wall and sidewalk.

Some work may be done at night; construction will take up to four months to complete.

Note: Dates and times may change due to unforeseen operational factors or inclement weather.

Construction Activities

Magnolia Street

What: Settlement fill construction
Where: Adjacent to the Magnolia Street bridge, on the northbound side of I-405.
When: 10 p.m. – 5 a.m. Monday, Jan. 28 through Friday, Feb. 1

Crews will mobilize equipment and haul fill material behind lane closures, which can only be done at night.

Why: These large piles of dirt will remain in place for up to three months to compact the soil beneath them for future bridge support structures.

Fairview Road

What: Removal of center median
Where: Fairview Road will be reduced to two lanes in each direction between Augusta Street and the northbound I-405 ramps. The lane closures will be set and removed at the beginning and end of each shift. The left-turn lanes from Fairview Road onto southbound and northbound I-405 will remain open. The left-turn lanes from northbound Fairview Road onto Belfast Avenue and McCormack Lane will also remain open.
When: 9 a.m. – 3 p.m. through Friday, Feb. 1.
Why: Median removal is being done in advance of the Fairview Road traffic shift, which is scheduled for early February. The traffic shift will establish a work zone for partial demolition of the bridge, scheduled for early March.

Bolsa Chica Road

What: Settlement fill construction
Where: Adjacent to the Bolsa Chica Road bridge, on the northbound and southbound sides of I-405.
When: 7 a.m. – 4 p.m. on weekdays Monday, Jan. 28, through Friday, Feb.8
10 p.m. – 5 a.m. on weekdays Monday, Jan. 28 through Friday, Feb. 8

Crews will mobilize equipment and haul fill material behind lane closures, which can only be done at night.

Why: These large piles of dirt will remain in place for up to three months to compact the soil beneath them for future bridge support structures.

Westminster Boulevard

What: Removal of center median
Where: Westminster Boulevard between Springdale Street and Willow Lane.

  • Eastbound Westminster Boulevard will be reduced to one lane between the southbound I-405 on-ramp and Willow Lane.
  • The merge lanes exiting the southbound I-405 off-ramp onto Westminster Boulevard will be maintained.
  • Westbound Westminster Boulevard will reduced to two lanes between the northbound I-405 on-ramp and Springdale Street.
  • The left-turn lanes onto the northbound and southbound I-405 on-ramps will be closed. Motorists will be able to access the ramps by making a U-turn at Willow Lane or Springdale Street.

When: 7 a.m.- 4 p.m. on weekdays Monday, Jan. 28, through Saturday, Feb. 2.

The closures will remain in place for the duration of this activity.

Pile Installation Activities

Goldenwest Street

What: Daytime pile installation
Where: Adjacent to Goldenwest Street, on the northbound and southbound sides of I-405.
When: 6:30 a.m. – 4 p.m. on weekdays beginning as early as Monday, Feb. 4.
Why: Pile installation is necessary to construct the foundation of the new Goldenwest Street bridge.

McFadden Avenue

What: Daytime pile installation
Where: Adjacent to McFadden Avenue, on the northbound and southbound sides of I-405.
When: Ongoing, 7 a.m. – 4 p.m. on weekdays
Why: Pile installation is necessary to construct the foundation of the new McFadden Avenue bridge.

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.

This article was released by the Orange County Transportation Authority.

Author: Los Al TV

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