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! Southbound (SB) I-405 Off-Ramp to Seal Beach Boulevard to Close TONIGHT for Approximately One Month
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Crews will close the SB I-405 off-ramp to Seal Beach Boulevard for approximately one month as part of project improvements.

The ramp closure is anticipated for 10 p.m. TONIGHT, Sept. 16, and is expected to reopen after approximately one month.

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
UPDATE! Southbound I-405 Closure for I-405/ SR-73 Express Lanes Connector Concrete Pour 
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Crews will continue pouring concrete for the new I-405/SR-73 Express Lanes Connector. This work will require a 14-hour closure of southbound (SB) I-405 in Costa Mesa.

The closure is anticipated as early as 9 p.m. Saturday, Sept. 17, to 11 a.m. Sunday, Sept. 18.

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
UPDATE! Northbound (NB) I-405 Closures for the New
I-405/SR-73 Express Lanes Connector
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Crews will continue to construct the new I-405/SR-73 Express Lanes Connector.

This work will require nightly NB I-405 closures between the NB I-405 off-ramp to South Coast Drive and the NB I-405 on-ramp from Fairview.

The NB I-405 closures are anticipated as early as 11 p.m. to 5 a.m. Monday, Sept. 19, through Thursday, Sept. 22, and 11 p.m. to 6 a.m. on Friday, Sept. 23.

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
UPDATE! Southbound (SB) I-405 Closures for the New
I-405/SR-73 Express Lanes Connector
Click image to enlarge.
Crews will continue to construct the new I-405/SR-73 Express Lanes Connector.

This work will require nightly SB I-405 closures between the SB I-405 off-ramp to Fairview Road and the SB I-405 on-ramp from Bristol Street.

The SB I-405 closures are anticipated as early as 11 p.m. to 5 a.m. Monday, Sept. 19, through Wednesday, Sept. 21, and 11 p.m. to 6 a.m. on Friday, Sept. 23.

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
NEW! Northbound (NB) I-405 Closure for Overhead Sign Installation
Crews will install an overhead sign near the I-405/I-605/SR-22 connector.

This work will require a NB I-405 closure between the westbound (WB) SR-22 connector and I-605. The NB I-405/I-605 connector will also be closed.

The closures are anticipated as early as 11:59 p.m. to 5 a.m. Wednesday, Sept. 21, and again on Thursday, Sept. 22.

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
NEW! Southbound (SB) I-405 Closure for Restriping
Crews will restripe lanes on SB I-405.

This work will require a SB I-405 closure between the SB I-405 off-ramp to Bolsa Chica Road and the SB I-405 on-ramp from Westminster Boulevard.

The SB I-405 closure is anticipated as early as 11 p.m. Friday, Sept. 23, to 6 a.m. Saturday, Sept. 24.

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
RESCHEDULED! Northbound (NB) I-405 Closure for Restriping
Crews will restripe lanes on the freeway near the Magnolia Street bridge.

This work will require a NB I-405 closure between the NB I-405 off-ramp to Magnolia/Warner Avenue and the NB I-405 loop on-ramp from Beach Boulevard.

The NB I-405 closure is anticipated as early as 11 p.m. Friday, Sept. 23, to 6 a.m. Saturday, Sept. 24.

Sign up for project-wide and bridge-specific construction alerts at bit.ly/405-signup.
REMINDER! Westminster Boulevard Bridge Closures
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Crews will continue sealing joints in the Westminster Boulevard bridge over I-405. This work will require nighttime bridge closures.

The bridge will be closed between Springdale Street and Willow Lane as early as 9 p.m. to 5 a.m.:
  • Monday, Sept. 19; and
  • Tuesday, Sept. 20.
REMINDER! Goldenwest Street/Sowell Avenue Closed for Approximately One Month
Click images to enlarge.
Crews closed Sowell Avenue at NB Goldenwest for approximately one month so crews can reconstruct the intersection to align with the new Goldenwest bridge.

Activities include concrete cutting and removal, grading, curb and gutter reconstruction, drainage and electrical work, and paving.

Sowell Avenue closed Monday, Sept. 12, and is expected to open after approximately one month.
REMINDER! Northbound (NB) I-405 Loop On-Ramp from Harbor Boulevard Closed for Approximately Six Weeks
Click images to enlarge.
Crews closed the NB I-405 loop on-ramp from Harbor Boulevard as part of project improvements.

The ramp closed Monday, Sept. 12, and is expected to open after approximately six weeks.
This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.

Este trabajo puede ser ruidoso. El horario está sujeto a cambios debido a las inclemencias del tiempo o problemas operativos imprevistos.

Xin lưu ý là công việc này có thể gây nên những tiếng động ồn ào. Lịch trình có thể thay đổi vì thời tiết xấu hoặc những yếu tố công tác không thể dự đoán.
REMINDER! Crews are relocating several utilities to continue widening the drainage channel adjacent to homes in the College Park West community.

Utility line relocation is ongoing, 7 a.m. to 4 p.m. on weekdays.

Block wall installation is anticipated to begin in fall 2022.

Crews may access the work zone intermittently along College Park Drive and from the WB SR-22 connector to mobilize equipment as early as 6 a.m., and some activities may occur at night from 9 p.m. to 6 a.m. as needed.

Please be advised that this work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.
UPDATE! The North Gate Road closure that was originally anticipated to end this month will be extended through at least October 2022. The opening has been delayed due to unforeseen site conditions; however, crews are working to open the road as soon as possible.

North Gate Road is now anticipated to reopen in mid- to late October.

The 405 Community Outreach Team will keep the community updated. Thank you for your patience during construction.

Please feel free to contact us at 888-400-8994 or email us at 405project@octa.net.
REMINDER! Crews will continue constructing the sound walls along northbound (NB) I-405, adjacent to Almond Avenue.

Block wall installation began in August and is anticipated to be completed after one more month.

Construction activities will continue 7 a.m. to 4 p.m. on weekdays.

Crews may mobilize equipment as early as 6 a.m., and some activities may occur from 9 p.m. to 6 a.m. as needed.

Please be advised that this work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.
REMINDER! Crews are wrapping up construction of the wall along SB I-405, adjacent to Vermont Street.

Activities will continue 7 a.m. to 4 p.m., on weekdays, through at least Friday, Sept. 16.

Crews may mobilize equipment as early as 6 a.m., and some activities may occur from 9 p.m. to 6 a.m. as needed.

Please be advised that this work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.
REMINDER! The city of Fountain Valley is performing sewer replacement work along Magnolia Street at Warner Avenue, which requires lane reductions. The sewer project is anticipated to be completed in early September.
Now, more than ever, local businesses need your love and support! Orange County Transportation Authority (OCTA) is partnering with the cities of Fountain Valley, Westminster and Huntington Beach and their Chambers of Commerce for the 405 Forward program. We want to highlight businesses along the I-405 Improvement Project, and we need your help!
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