What: Crews will demolish a portion of the existing sound wall adjacent to southbound I-405 near Moon Park to create access to the bridge from the freeway. This work will be performed at night. Please be advised that this work may be loud.

Where: Southbound I-405, adjacent to Moon Park.

When: As early as 9 p.m. Friday, May 10 to 6 a.m. Saturday, May 11. This work will be performed concurrently with partial demolition of I-405 bridge over the Santa Ana River and will require freeway lane closures, which can only be done at night. The sound wall will be removed and replaced in its entirety at a later date as part of the project. The 405 Community Outreach Team will notify the community adjacent to the wall before this activity begins.

Note: Dates and times may change due to unforeseen operational factors or inclement weather.

Why: As part of the I-405 Improvement Project, which adds a general purpose lane and a tolled Express Lane facility in each direction, several sound walls will be replaced.