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I-405 Improvement Project construction alert: Week of May 25

Featured graphic for the Orange County Transportation Authority

Featured graphic for the Orange County Transportation Authority.

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.

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

Click to see closures and detours on the interactive map.

COMING SOON! SB I-405 on-ramp from Edinger Avenue to close for approximately one month

The SB I-405 on-ramp from Edinger is scheduled to close 10 p.m. Thursday, May 28. The ramp will be closed for approximately one month, and will be reconstructed as part of the freeway widening.

*Daytime closures are set to continue through May 28, 6 a.m. to 4 p.m.

NEW! Full Northbound (NB) Euclid Street closures set for next week

NB Euclid closures are scheduled next week so crews can stage equipment and continue construction of the widened freeway over Euclid.
Night closures are set to begin Monday, June 1, 9 p.m. to 5 a.m. for approximately one week on weeknights.

REMINDER! SB I-405 Goldenwest Street On- and Off-ramps are closed for approximately one month

The SB I-405 off-ramp to Goldenwest and the SB I-405 loop on-ramp from Goldenwest are closed for approximately one month, and will be reconstructed as part of the freeway widening.

UPDATE! Full Northbound (NB) and Southbound (SB) Beach Boulevard closures set to continue for falsework construction

Crews are constructing falsework for the widened freeway over Beach Boulevard.

This work requires full NB and SB ramp, lane and Beach Boulevard closures between Center Avenue and the freeway ramps.

Nightly closures are ongoing, 9:30 p.m. to 6 a.m. for approximately one more week on weeknights.

COMING SOON! NB I-405 off-ramp to Seal Beach Boulevard to close for approximately one month

The NB I-405 off-ramp to Seal Beach Boulevard is scheduled to close for approximately one month this summer. The ramp will be reconstructed as part of the freeway widening.

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

UPDATE! NB I-405 off-ramp to South Coast Drive set to reopen

The NB I-405 off-ramp to South Coast Drive is scheduled to reopen Saturday, May 30.

REMINDER! NB I-405 loop off-ramp to Westminster Boulevard closed for ONE YEAR

Crews closed the NB I-405 loop off-ramp to Westminster Boulevard. The ramp will be closed for approximately 12 months to allow construction of new walls and ramps at this location in one stage, eliminating multiple traffic shifts and confusion for motorists.

Construction Activities

Magnolia Street

UPDATE! Crews will begin installing piles for the foundation of the new Magnolia bridge.

Bolsa Avenue

UPDATE! Crews began installing piles for the foundation for the new Bolsa 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.

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