I-5 South Overview

October 2018 Update I-5 Corridor

  • Over the next five years, Caltrans is investing $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). 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 Construction Projects