Featured graphic for the Orange County Transportation Authority

I-405 Improvement Project construction alert: Week of January 7, 2019

Bridge Demolition Activities
 
Magnolia Street
  • What: Partial demolition of the Magnolia Street bridge will continue. Crews will demolish a portion of the bridge over southbound (SB) I-405.
  • Where: The Magnolia Street bridge over SB I-405. SB I-405 will be closed at Magnolia Street during the nighttime demolition.
  • Additional closures:
    • Magnolia Street bridge will be closed.
    • Northbound loop on-ramp at Magnolia Street will be closed.
    • Southbound loop on-ramp at Magnolia Street will be closed.
  • When: SB I-405 will be closed from 11 p.m. Saturday, Jan. 12, to 8 a.m. Sunday, Jan.13. The Magnolia Street bridge will be closed 10 p.m. Saturday, Jan. 12, to 8 a.m. Sunday, Jan. 13.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.Detour Routes:

Southbound I-405 Detour: 

  • Exit southbound I-405 at Beach Boulevard -> Right turn to southbound Beach Boulevard -> Left turn to eastbound Warner Avenue -> Southbound I-405 on-ramp at Warner Avenue.

Pile Installation Activities

Slater Avenue

  • What: Nighttime pile installation
  • Where: Freeway median
  • When: 10 p.m.-5 a.m. Wednesday, Jan. 7, through Friday, Jan. 11
  • Why: Requires lane closures on I-405, which can only be done at night.
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.
Magnolia Street
  • What: Daytime and nighttime pile installation
  • Where: Adjacent to Magnolia Street, on the northbound and southbound sides of I-405.
  • When: Ongoing, 6:30 a.m.-4 p.m. and 10 p.m.-5 a.m. on weekdays
  • Why: Piles are being installed for shoring to support construction of the future bridge. Some work may be done at night.

Goldenwest Street

  • What: Nighttime pile installation
  • Where: Freeway median
  • When: Ongoing, 10 p.m.-5 a.m. on weekdays 
  • Why: Requires lane closures on I-405, which can only be done at night.

Construction Activities

Fairview Road

  • What: Vegetation removal and electrical work
  • Where: Center median of Fairview Road. 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. Monday, Jan. 7, through Friday, Jan. 11.
  • Why: Median clearing is done in advance of median removal.

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.