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The California Department of Transportation (Caltrans) in partnership with the Orange County Transportation Authority (OCTA) is continuing work on the NEW I-405/SR-73 Express Lanes connector. This work will require two 12-hour closures of southbound (SB) I-405 in Costa Mesa. The SB I-405/SR-73 on-ramp from Fairview Road will also be closed. Northbound (NB) I-405, the existing SR-73 connector, and Fairview Road bridge will remain open.
The closures are anticipated 9 p.m. Friday, Aug. 19, to 9 a.m. Saturday, Aug. 20, and again 9 p.m. Friday, Aug. 26, to 9 a.m. Saturday, Aug. 27.
For more information about this project, please contact the 405 Community Outreach Team at [email protected] or 888-400-8994, or visit octa.net/405improvement.
Message signs will be located leading up to the closure to advise motorists to take alternate routes. Please obey all posted signs and traffic instructions for the safety of all workers and motorists. Detour map attached below.
Caltrans appreciates the public’s patience while we perform this work. Electronic Changeable Messages Signs will notify drivers of the closure. The work schedule is
subject to change due to traffic incidents, weather, availability of equipment and/or materials, and/or construction-related issues.
For more information and updates, you may contact the District 12 Public Information Office at (657)328-6000 or on social media via Twitter @CaltransOC, Facebook @CaltransOC, and Instagram @CaltransOC.
For those with sensory disabilities requiring alternate formats (i.e. Braille, large print, sign language interpreter, etc.) and those needing information in a language other than English, please contact Nathan Abler at (657) 650-5146 or TTY 711.
