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Castaic's 5 Freeway: A Gas Leak, Traffic Chaos, and Lessons from the Past

Castaic, USASunday, December 28, 2025
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Saturday's Incident:

  • Location: 5 Freeway, Castaic
  • Impact: All lanes closed for hours
  • Cause: Natural gas leak from a major gas line
  • Outcome: No explosion or fire reported

Details of the Leak

  • Source: Big gas line near the freeway
  • Resolution: Fire officials stopped the leak safely
  • Possible Cause: Recent storms may have shifted the land, damaging the gas line
  • Current Status: Investigation ongoing

Traffic and Safety Measures

  • Traffic Jams: Drivers stuck for nearly three hours
  • Shelter-in-Place Order: Issued for nearby areas
  • Affected Population: Approximately 14,900 people
  • Order Lifted: Around 10 p.m. Saturday

Historical Context

  • 2015 Aliso Canyon Leak: Largest natural gas leak in U.S. history
  • Impact: Health problems, school closures, evacuations

Leak Characteristics

  • Pipe Condition: Under significant pressure
  • Release: Forceful, kicking up dirt and debris
  • Visibility: Drivers could see the disturbance from the freeway

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