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I-5 South

I-5 South Overview

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Over the next five years, Caltrans is investing $1.6 billion dollars to improve southern segments along the Santa Ana Freeway (I-5) between the Orange County line and the San Gabriel River Freeway (I-605). Improvements will enhance safety, improve traffic flow, reduce congestion, encourage ride sharing, decrease surface street traffic and help improve air quality. Projects include:

  • High-Occupancy Vehicle (HOV or carpool) Lanes – Carpool lanes for vehicles with two or more passengers
  • Mixed-Flow Lane – Lane for all motorists
  • Interchange Modifications – Upgraded on-ramps and off-ramps, bridge widening or bridge reconstruction
  • Pedestrian Overcrossing – Bridge for pedestrians to cross over freeway
  • Frontage Road Modification – Reconstruction or improving road surfaces adjacent to freeway

I-5 South Corridor Map


Click on any specific project for additional information.

I-5 South Corridor Updates

I-5 South Corridor Collateral Material


View the 4-23-13 I-5 South Aesthetics Boards
View the I-5 South Brochure in English
View the I-5 South Brochure in Spanish
Imperial Highway and Pioneer Boulevard Fact Sheet
Rosecrans Avenue and Bloomfield Avenue Bridges Fact Sheet
Alondra Boulevard Bridge Fact Sheet
Carmenita Road Interchange Fact Sheet
Florence Avenue Interchange Fact Sheet
Valley View Avenue Interchange Fact Sheet
I-5 South Corridor Construction Activity Map January 2014
I-5 South Corridor Closures Map