As part of the I-405 Improvement Project, OCTA announced that beginning Monday Oct. 9, construction work will take place from 9 p.m. to 5 a.m. at the following locations:
- NB I-405 HOV inside lane from MacArthur Boulevard to SR-73
- NB I-405 merge lane from Bristol Street to South Coast Drive
- SB I-405 / SR-73 connector to Bear Street
- SB I-405 near Harbor Boulevard to Fairview Road
- Fairview Road bridge
- Harbor Boulevard bridge
OCTA in cooperation with The California Department of Transportation (Caltrans) is widening the San Diego Freeway (I-405) between State Route 73 (SR-73) and Interstate 605 (I-605). The project will improve 16 miles of I-405 between the SR-73 freeway in Costa Mesa and I-605 near the L.A. County line.