Full Notification

ORANGE COUNTY – The California Department of Transportation (Caltrans) is scheduled to begin overnight lane closures on Interstate 405 (I-405) between I-5 and Bear Street in Irvine and Costa Mesa starting Thursday, August 22 until October 2024. Work will be conducted overnight, Monday through Friday at various locations throughout the project limits. Lane closures will begin at 9 p.m. and open by 5 a.m. This project will replace pavement slabs on both northbound and southbound I-405.

Please note there will be loud noise due to construction. Please obey all posted signs and traffic instructions for the safety of all workers and motorists. Electronic changeable messages signs will notify drivers of the closures. The work schedule is subject to change due to traffic incidents, weather, availability of equipment and/or materials, and/or construction-related issues.

Caltrans appreciates the public’s patience while we perform this work. 

For more information and updates, you may contact the District 12 Public Information Office via email at [email protected] or on social media: Twitter, Facebook and Instagram.

For those with sensory disabilities requiring alternate formats (Braille, large print, sign language interpreter, etc.) and those needing information in a language other than English, please contact Nathan Abler or TTY 711.