I-5 Central County Improvements

Central I5

Project Overview

Current studies suggest, 390,000 motorists travel the I-5 freeway between the SR-55 and SR-57 freeways daily and projected traffic volumes anticipate a 19 percent increase by 2030, bringing the total to 464,000 motorists per day. Caltrans in partnership with OCTA proposes to relieve traffic congestion, eliminate bottlenecks and improve traffic operations on this corridor within the cities of Santa Ana, Orange and Tustin. The project recommends adding a second HOV (High Occupancy Vehicle) lane in each direction and removing the I-5 / Main Street HOV on- and off-ramps.

1. Carpool alternatives under consideration  


Construction Costs: $42 million

Funding: Federal and state funds; STIP and local Measure M

Draft Environmental Document Review

Caltrans has studied the effects this project may have on the environment, which indicate that it will not significantly affect the quality of the environment. Detailed information on the study is now available in the Draft Environmental Document.The Document is available online at www.dot.ca.gov/dist12/I-5HOV/  and at several libraries within the project area:

  • Santa Ana Public Library, 26 civic Center Plaza, Santa Ana, CA 92701
  • Orange Public Library, 407 E. Chapman Avenue, Orange, CA 92886
  • Tustin Library, 345 E. Main Street, Tustin, CA 92780

Comments on the IS/EA must be received by Caltrans no later than September 12, 2014 and should be sent to:

Mr. Edward Dolan
Caltrans District 12 Office
3347 Michelson Dr., Suite 100
Irvine, CA 92612
Responses may also be emailed to:

The Draft Environmental Document was released on August 13, 2014 and is available for public review and comments through September 12, 2014 at 5 p.m.

Public Hearing (Open House)

Please join us at the Public Hearing to provide your comments and ask questions on the Document. Project representatives will be available and informational exhibit boards will be on display for public viewing.

5 to 7 p.m.
Tuesday, September 2, 2014

Rancho Santiago Community College District, Board Room
2323 N. Broadway
Santa Ana, CA 92706

For more information on the I-5 Central County Improvement Project Public Hearing, please call Nicolette La Piana (714) 560-5787 or email at nlapiana@octa.net
Si prefiere recibir información en español, por favor llame a Melissa Holguin al (909) 627-2974 x229

Community Outreach

The environmental phase includes extensive public outreach.

Once the public review period is closed, we will continue to keep the residents, businesses and community leaders informed by actively meeting with key groups, homeowner associations and businesses in the area. Please contact us to schedule a presentation.


Project Contact

Nicolette La Piana
Associate Community Relations Specialist
(714) 560-5787