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The original item was published from 5/27/2021 11:11:24 AM to 6/6/2021 12:00:00 AM.

News Flash

Fountain Valley News

Posted on: May 27, 2021

[ARCHIVED] I-405 Improvement Project Construction Alert: Week of May 24

405 project

Crews will close the Warner Avenue bridge in anticipation of demolition to accommodate the freeway widening as early as 10 p.m. Tuesday, June 1. 

Construction of the new bridge is anticipated to take approximately 23 months. The bridge will be demolished over three Saturday nights, under full freeway closures.

Demolition is anticipated June 5, June 12, and June 19*.

Additional nighttime demolition will occur for several weeks under freeway lane closures on weekdays. Some daytime demolition also is anticipated.

Crews will close the I-405 off-ramps to Warner for temporary ramp construction. Ramps closures are set for 10 p.m. Tuesday, June 1, to 5 a.m. Friday, June 4. 

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

Sign up for project-wide and bridge-specific construction alerts at

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