Frequently Asked Questions

About the Project

What is the I-405 improvement project?

The 405 Express Lanes is one component of the overall 16-mile I-405 Improvement Project. With new lanes, bridges, ramps, and enhancements to surrounding city streets, the voter-approved project supports OCTA’s mission to deliver a balanced and sustainable transportation network for all those who live, work and visit Orange County.

For construction updates, visit the I-405 Improvement Project.

Didn’t find the answer that you were looking for?

Contact Customer Service using the options below.

In Person
405 Express Lanes Customer Service Center

Hours: 8:00 a.m. - 6:00 p.m
Monday through Friday

OCTA Store

Hours: 8:00 a.m. - 5:00 p.m
Monday through Friday


Hours: 8:00 a.m. - 6:00 p.m
Monday through Friday

Email Address

Mailing Address
405 Express Lanes
P.O. Box 2177
Costa Mesa, CA 92628