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I-405 Improvement Project construction alert: Week of Nov. 23

For more information about this project, please contact the 405 Community Outreach Team at [email protected] or 888-400-8994, or visit octa.net/405improvement.

To view and print a detailed list of closures and detours CLICK HERE!

Click to see closures and detours on the interactive map.

NEW! Full Southbound (SB) and Northbound (NB) I-405 Freeway Closures for Heil Avenue Pedestrian Bridge Construction Activities

Crews will excavate, stage and load material to prepare for pile installation activities. This work will require full NB and SB I-405 freeway closures between Warner Avenue and Beach Boulevard.

NB I-405 full freeway closures are set for 11 p.m. to 5 a.m.:

  • Monday, Nov. 30
  • Tuesday, Dec. 1

NB I-405 Detour is:

  • NB I-405 loop off-ramp to Warner → Warner → Beach → NB I-405 loop on-ramp

NB and SB I-405 full freeway closures are set for 11 p.m. to 5 a.m.:

  • Wednesday, Dec. 2

NB I-405 Detour is:

  • NB I-405 loop off-ramp to Warner → Warner → Beach → NB I-405 loop on-ramp

SB I-405 Detour is:

  • SB I-405 off-ramp to Center Avenue/Beach → Beach → Warner → SB I-405 on-ramp

SB I-405 full freeway closures are set for 11 p.m. to 5 a.m.:

  • Thursday, Dec. 3; and
  • Friday, Dec. 4, to Friday, Dec. 11, on weeknights.

SB I-405 Detour is:

  • SB I-405 off-ramp to Center Avenue/Beach → Beach → Warner → SB I-405 on-ramp

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

REMINDER! Southbound (SB) I-405 Off-Ramp to Euclid Street to Close for Approximately One Month

Crews will close the southbound (SB) I-405 off-ramp to Euclid Street for approximately one month to accommodate the freeway widening.

Activities include demolition, excavation, grading, drainage and electrical system installation, concrete pours and asphalt paving.

The closure is set for 10 p.m. Monday, Nov. 30. The ramp is scheduled to reopen after approximately one month.

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

UPDATE! SB I-405 Off-Ramp to Bolsa Chica Road Closed for Approximately One Year

Crews will continue the closure of the southbound (SB) I-405 off-ramp to Bolsa Chica Road for approximately one year to advance construction on the Bolsa Chica bridge.

Activities include demolition, excavation, grading, drainage and electrical system installation, concrete pours and asphalt paving.

The extended closure is anticipated to start on Thursday, Dec. 3, 2020. The ramp is schedule to reopen after approximately one year.

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

Please be advised that this work may be loud.

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.

COMING SOON! McFadden Avenue Bridge Lane Reductions for Monument Work

Crews will construct the McFadden bridge monument over I-405. This work will require lane reductions on McFadden in each direction between Pacific Street and Gothard Street.

Activities include rebar, form and concrete work. Flaggers will be on-site to manage traffic.

The 405 Community Outreach Team will provide detailed schedule information in future alerts.

NEW! Full Northbound (NB) and Southbound (SB) Harbor Boulevard Closures for Concrete Work

Crews will pour concrete for the widened I-405 bridge over Harbor. This work will require a full closure of Harbor between the I-405 ramps.

The closures are set for 10 p.m. to 5 a.m.:

  • Monday, Nov. 30.
  • Tuesday, Dec. 1, if needed.

Access for emergency responders will be maintained in each direction. Access to businesses will be maintained.

REMINDER! Nightly Consecutive Ramp Closures Scheduled for Approximately Six Months

Crews are scheduled to close the following ramps, as needed, for six months to support bridge construction activities at Magnolia Street and Brookhurst Street:

  • Southbound (SB) I-405 Loop On-Ramp from Magnolia
  • SB I-405 On-Ramp from Warner Avenue
  • SB I-405 Loop On-Ramp from Brookhurst

Closure hours are:

  • 10 p.m. to 5 a.m. weeknights
  • 10 p.m. to 7 a.m. weekends

REMINDER! Northbound (NB) Beach Boulevard Lane Reductions

Crews are performing utility work on Beach Boulevard for approximately the next several weeks. This work requires daytime and nighttime lane reductions on NB Beach between McFadden and Edinger and nighttime closures of the NB I-405 off-ramp to Beach through mid-December.

Daytime lane reductions are set to continue 9 a.m. to 3 p.m.

Nighttime lane reductions are set to continue for as early as 7:30 p.m. to as late as 8 a.m.

COMING SOON!Southbound (SB) I-405 On-Ramp from Westminster Boulevard to Close for Approximately One Month

Crews will close the SB I-405 on-ramp from Westminster for approximately one month in early December to accommodate the freeway widening.

The 405 Community Outreach Team will provide detailed detour and schedule information in future alerts.

UPDATE! SB I-405 Off-Ramp to Harbor Boulevard is NOW OPEN!

The SB I-405 off-ramp to Harbor is now open to traffic.

Construction Activities

Fairview Road

REMINDER! Crews will continue installing piles for the foundation of a new retaining wall along northbound Fairview adjacent to Boston Way.

  • Ongoing 7 a.m. to 4 p.m., for approximately one more day.

Crews may mobilize equipment as early as 6 a.m. and some activities may occur at night.

Edinger Avenue

REMINDER! Crews will continue installing piles along northbound and southbound I-405 for the foundation of the new Edinger Avenue bridge. Approximately 150 piles will be used.

  • Ongoing 7 a.m. to 4 p.m. on weekdays and Saturdays, for approximately one month.

Crews may mobilize equipment as early as 6 a.m. and some activities may occur at night.

Activities will be suspended Thursday, Nov. 26, and Friday,
Nov. 27, for the Thanksgiving holiday.

Edwards Street

REMINDER! Crews will continue installing piles for the foundation for the Edwards bridge over I-405 in the center median in late November.

  • Ongoing 7 a.m. to 4 p.m. on weekdays and Saturdays, as needed, for approximately two weeks.

Vermont Street

REMINDER! Crews will continue working on the foundation of the wall along southbound (SB) I-405, behind homes on Vermont Street. The foundation consists of approximately 180 cast-in-drilled-hole (CIDH) piles. This activity includes augering large holes, and installing rebar cages and pouring concrete into the holes to form the piles.

• Ongoing 7 a.m. to 4 p.m. on weekdays and Saturdays, for approximately two months.

Crews may mobilize equipment as early as 6 a.m. and some activities may occur at night.

Bolsa Avenue

REMINDER! Crews will continue installing piles for the wall along northbound (NB) I-405 between McFadden Avenue and Bolsa Avenue.

  • Ongoing 7 a.m. to 4 p.m., for approximately one more day.

Crews may mobilize equipment as early as 6 a.m. and some activities may occur at night.

Bolsa Chica Road

COMING SOON! Crews will begin installing piles for the foundation of the center columns for the Bolsa Chica bridge over I-405, in the center median, west of the Bolsa Chica bridge.

The 405 Community Outreach Team will provide detailed schedule information in future alerts.

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.