Octa's transportation blog

The I-405 Improvement Project: Behind the Scenes

Improving Safety and Efficiency

The largest project in OCTA’s history, the I-405 Improvement Project will improve 16 miles of I-405 and add one regular lane in each direction from Euclid Street to I-605. It will also construct the 405 Express Lanes from SR-73 to I-605. This is part of a series that reports on what’s happening behind the scenes.

To help with traffic management during construction, the I-405 Improvement Project has chosen industry-leading software to analyze and visualize traffic data to manage traffic congestion, safety and mobility for 370,000 daily southern California road users during the construction phase of the $1.9 billion project.

Features from software provider Iteris include real-time congestion maps to support maintenance of traffic during construction; bottleneck monitors to identify construction-related problem areas; graphical representations of traffic conditions to analyze events and optimize response plans; historical trend and route reports, maps and congestion charts to track reliability and support planning of project detour routes in and around the cities of Costa Mesa, Fountain Valley, Huntington Beach, Westminster and Seal Beach.

Safety is OCTA’s top priority on this and all other projects.

Learn more about the I-405 Improvement Project here.

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