OCTA in cooperation with Caltrans is improving 16 miles of the San Diego Freeway (I-405) between State Route 73 (SR-73) and Interstate 605 (I-605). It also will construct the 405 Express Lanes from SR-73 to I-605. The new express lanes – incorporating the existing carpool lanes and connectors that opened in 2014 – will be two lanes in each direction.
Inside the 405: Video Series
Anticipated Milestone Dates
|I-405/SR-73 Connector||Mid-2023 *|
*The I-405/SR-73 Connector construction is anticipated to be complete in mid-2023 however, it will not be open to traffic until the Express Lanes are completed in late 2023.
I-405 Improvement Project Design-Build Completion: Late 2023
Contact the 405 Community Outreach Team
If you have questions, please contact the Outreach Team by calling (888) 400-8994.
Para obtener más información sobre el Proyecto de Ampliación en el I-405, llame al (888) 400-8994.
Để biết thêm thông tin về Dự Án Cải Thiện Xa Lộ I-405, xin vui lòng liên lạc cô Gia Lý theo đường dây tiếng Việt (888) 662-6569.
Project by the Numbers
The $2.16 billion OC Go project, Measure M, being constructed in cooperation with Caltrans, will be funded mostly through a combination of local, state and federal funds, with the express lanes portion of the Project paid for by those who choose to pay a toll and use the 405 Express Lanes.
OC go sales tax funds
- 40 separate utility owners
- Orange County Flood Control
- Union Pacific Railroad
- Army Corps of Engineers
- U.S. Navy
- Emergency service providers such as police and fire
- Costa Mesa
- Fountain Valley
- Huntington Beach
- Garden Grove
- Long Beach
- Los Alamitos
- Seal Beach
- Community of Rossmoor