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I-405 Improvement Project construction alert: Wednesday, May 25

Crews will close all northbound (NB) and southbound (SB) I-405 freeway lanes at the I-405/SR-73 Connector in Costa Mesa to pour concrete ....

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I-405 Improvement Project construction alert: Wednesday, November 3

Crews will close the southbound (SB) I-405 loop on-ramp from Bolsa Chica Road for approximately one month to accommodate the ....

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I-405 Improvement Project construction alert: Wednesday, October 27

The closure of the SB I-405 loop off-ramp to eastbound Westminster Boulevard has been extended for an additional three months. ....

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I-405 Improvement Project construction alert: Wednesday, October 13

Crews will perform maintenance work on the Magnolia Street bridge over I-405. This work will require nightly closures of the bridge ....

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I-405 Improvement Project construction alert: Week of January 18

NB nightly full freeway closures are set to continue 10 p.m. to 5:30 a.m.:
Thursday, Jan. 28
Monday, Feb. 1 through Thursday, Feb. 4
Only one direction is planned to be closed. If SB work has not been completed, it will be closed. Otherwise, northbound (NB) will be closed.
REMINDER! Nightly Southbound (SB) I-405 Freeway Closures for Bridge Work
Nightly SB I-405 closures are scheduled to continue for Brookhurst Street bridge construction. Activities include equipment mobilization, pile installation, shoring installation, falsework installation and grading, and column demolition for the old half of the Brookhurst bridge.
SB I-405 will be closed between Magnolia and Brookhurst. ....

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