I-5 South

I-5 South Overview

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Caltrans is invested 1.9 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). Construction on the I-5 South projects began in 2012 and should completer by mid-2022. Project improvements will enhance safety and freeway access and encourage ride sharing. 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


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