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

Si prefiere recibir información en español, por favor llame este numero 888-400-8994.
Nếu quý vị muốn nhận được thông tin này bằng tiếng Việt, xin vui lòng liên lạc với cô Lý Gia
888-662-6569.
To view and print a detailed list of closures and detours CLICK HERE!
REMINDER! Northbound (NB) and Southbound (SB) Full Freeway Closures for Bolsa Avenue Falsework Grading
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Click image to enlarge.
Crews will grade for falsework for the Bolsa bridge over I-405. This work will require full NB and SB freeway closures.

  • NB I-405 will be closed between Beach Boulevard and Bolsa 11 p.m. to 5 a.m. Thursday, Nov. 12; and 
  • SB I-405 will be closed between Goldenwest Street and Bolsa 11 p.m. to 5 a.m. Friday, Nov. 13. 

Please be advised that this work may be loud. Dates and times are subject to change due to unforeseen operational factors or inclement weather.

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
REMINDER! Southbound (SB) Full Freeway Closures for Fairview Road Bridge Concrete Pour
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Crews will pour concrete for the Fairview bridge over I-405. This work will require SB full freeway, and ramp closures, as well as lane reductions of NB I-405. The Fairview bridge will remain open during this activity.

The closures are set for 9 p.m. Friday, Nov. 13, to 7 a.m. Saturday, Nov. 14.

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
NEW! Full Euclid Street Closure for Concrete Work
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Crews will pour concrete for the widened freeway bridge over Euclid.

This work will require closing Euclid between Condor Avenue/Mt. Washington Street and the SB freeway ramps.

Residential and business access will be maintained.

The closure is set for 10 p.m. Monday,
Nov. 16, to 5 a.m. Tuesday, Nov. 17.
REMINDER! Full Northbound (NB) and Southbound (SB) Harbor Boulevard Closures for Falsework Installation
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Crews will continue constructing falsework for the widened I-405 bridge over Harbor. This work will require full closures of NB and SB Harbor between the I-405 ramps.

Nightly closures are set to continue Thursday, Nov. 12, and Friday, Nov. 13.

  • 10 p.m. to 5 a.m. Thursday
  • 10 p.m. to 7 a.m. Friday
COMING SOON! Southbound (SB) I-405 Off-Ramp to Euclid Street to Close for Approximately One Month
Crews will close the SB I-405 off-ramp to Euclid 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.
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.
REMINDER! NB I-405 Loop On-Ramp from Harbor Boulevard Closed for Approximately One Month
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The NB I-405 loop on-ramp from Harbor is closed and anticipated to open to traffic mid-November. The ramp is being reconstructed as part of the freeway widening project.
REMINDER! SB I-405 Off-Ramp to Harbor Boulevard Closed for Approximately One Month
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The SB I-405 off-ramp to Harbor* is closed and anticipated to open to traffic mid-November. The ramp is being reconstructed as part of the freeway widening project.

*The SB I-405 straight on-ramp will be closed concurrently during the day and will remain open during Harbor falsework activities at night. 
REMINDER! SB I-405 Off-Ramp to Bolsa Chica Road Closed for Approximately One Month
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Crews closed the SB I-405 off-ramp to Bolsa Chica Road for approximately one month to accommodate the freeway widening.
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.
UPDATE! Crews will continue installing piles for the foundation of a new retaining wall along northbound (NB) Fairview adjacent to Boston Way.

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

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

Please be advised that this work may be loud.
NEW! Crews are scheduled to begin pile driving along northbound (NB) and southbound (SB) I-405 for the foundation of the new Edinger Avenue bridge. Approximately 150 piles will be used.

The pile driving is set to begin as early as Tuesday, Nov. 17,
7 a.m. to 4 p.m., on weekdays and Saturdays, as needed, 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.

Please be advised that this work may be loud.
NEW! Crews will continue installing piles for the foundation for the Edwards bridge over I-405 in the center median in late November.

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

Please be advised that this work may be loud.
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.

The pile driving is set to continue Monday, Nov. 16, 7 a.m. to 4 p.m., on weekdays and Saturdays, as needed, for approximately two months.

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

Please be advised that this work may be loud.
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. on weekdays, for approximately one month.

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

Please be advised that this work may be loud.
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.

Please be advised that this work may be loud.
The 405 Community Outreach Team is Still Working!
If you need to contact us, please email 405project@octa.net or call 888-400-8994. We're brainstorming new ways to keep the community engaged and informed in a time of social distancing. Stay tuned!
During the Pandemic, Keeping the Public Informed Requires Innovation
Since March, the project team has hosted 10 additional virtual community meetings, directly communicating with nearly 500 people. After the live meetings are recorded, they’re available online and have generated more than 2,100 views. Meanwhile, the team also continued to use long-established communications tools such as canvassed flyers and direct mail pieces to ensure all community members could stay up to date on major construction activities.

In addition, the 405 team has begun deploying technology to message hundreds of thousands of residents and commuters in specific areas of the project. Geofencing advertising campaigns have reached nearly 700,000 people with construction alert ads placed on apps like ESPN or Pandora Music. The messages show up on smartphones or tablets of those who live in or pass through a one-mile radius of selected construction zones.

Click here for more information.

Click here to view recorded virtual neighborhood meetings.
Get the Latest Traffic Conditions on the WAZE app!
The OCTA Community Outreach team has partnered with Waze, the free, real time crowdsourced traffic and navigation app powered by the world's largest community drivers.