Santa Ana Freeway (I-5) Gateway Project

Improving the Gateway to Orange County

Construction began in spring 2006 on the Santa Ana Freeway (I-5) Gateway Project. The four-year project is widening the remaining two miles of the Santa Ana Freeway (Interstate 5) in Orange County from the Riverside Freeway (State Route 91) to the Los Angeles County line. The I-5 Gateway Project is the final link in the original Measure M’s (Orange County’s half-cent transportation sales tax) ambitious freeway improvement program and is scheduled to be completed in fall 2010.

Project Highlights

  • Add a new travel lane in each direction
  • Add a new carpool lane in each direction
  • Add extended merging lanes where possible
  • Rebuild overpasses at Stanton Avenue, Beach Boulevard and Western Avenue
  • Rebuild Artesia Boulevard underpass and realign northbound on- and off-ramps
  • Realign the railroad from Stanton Avenue to Artesia Boulevard
  • Build aesthetically pleasing retaining walls

Closure Information

1. Southbound I-5 to Eastbound SR-91 HOV Connector Closed [PDF]
2. Construction Alerts

Receive Construction Alerts

If you would like to stay up-to-date on the progress of the project, sign up to be on the project database.

More Information:

For more information, contact Alice Rogan at arogan@octa.net or 714.560.5577.

I-5 Freeway Widening Improvements in Los Angeles

To learn more about the I-5 Corridor Improvement Project that is taking place in Los Angeles, contact Patrick Chandler at patrickchandler@dot.ca.gov or 213.897.3630.

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