US EditionGas line rupture briefly shuts down major Southern California freeway; shelter-in-place orders lifted
A landslide likely caused a rupture in a 34-inch gas transmission line, forcing shelter-in-place for residents within a one-mile radius, officials said.
- On Saturday, Dec. 27, 2025, a transmission gas line ruptured north of Los Angeles near Castaic, prompting the California Highway Patrol to issue a SigAlert and close both lanes on Interstate 5 while shelter-in-place orders were issued.
- Cause of the break remains under investigation as deputies suggested the rupture may be linked to a mudslide, with arson and explosives detectives called amid conflicting reports on the 34‑inch and 36‑inch transmission lines.
- Video from the scene showed debris as residents reported loud booms and a strong smell, with the initial call made at about 4:20 p.m. Saturday.
- By nightfall, the shelter‑in‑place order was lifted at 10 p.m., with SoCalGas crews isolating the pipeline and fewer than five non-residential customers facing outages.
- The closure snarled travel on a key statewide corridor, causing hours of gridlock on Interstate 5 during the post-Christmas travel period as SoCalGas and first responders managed the pipe under extreme pressure.
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Gas line ruptures in California, prompting shelter-in-place order
CASTAIC, Calif. (NBC, KYMA) - A shelter-in-place order was issued after a gas line ruptured near the I-5 Freeway in Castaic, California Saturday. Authorities, including Los Angeles County firefighters, responded to reports of a gas line rupture and possible explosion around 4:20 p.m. on a hill above the Golden State Freeway. A large cloud of debris floated towards the freeway following the incident. According to the California Highway Patrol, th…
Underground Gas Line Ruptures Causing Freeway Shutdown in Castaic
The Golden State (5) Freeway is open Sunday after an underground gas line rupture — possibly caused by a landslide — shut down all lanes in the Castaic area for nearly four hours while crews worked to turn off the gas. A shelter-in-place order was issued and the closure snarled freeway traffic for hours. “It took 5 hours to get off and exit to safety,” motorist @Lauraoiq noted on X. All lanes reopened at 8:50 p.m. The shelter-in-place order was …
There is a serious risk of a gas explosion in Santa Clarita, California, due to a fault in an underground pipeline. Gas leak, closures, firefighting measures.
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