April 7, 2026 3:02 AM

Semi Tractor-Trailer Catches on Fire, Blocks Traffic on Northbound I-15 in the Cajon Pass

CAJON PASS, CA. (Pain In The Pass) >> California Highway Patrol temporarily shut down two northbound lanes on Interstate 15 after a semi tractor-trailer caught fire.

On Monday May 12, 2025, just before 4pm, a semi-truck’s engine caught fire while driving on the interstate just after the Highway 138 exit, according to the CHP traffic log.

The fire was coming from under the cabin and rear tire of the semi-tire, sending a white and black plume of smoke into the air, visible from several miles away.

Firefighters extinguished the blaze, and the driver was not injured. Two right lanes were closed while firefighters raced to put out the blaze.

CHP said the cause of the fire is unknown and under investigation.

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Cajon Pass
3:02 am, Apr 7, 2026
temperature icon 54°F
clear sky
Humidity: 59 %
Pressure: 1015 mb
Wind: 4 mph
Wind Gust: 4 mph
Clouds: 0%
Visibility: 10 km
Sunrise: 6:28 am
Sunset: 7:14 pm
  • Temperature
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52°/54°°F 0 mm 0% 2 mph 61% 1015 mb 0 mm/h
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58°/60°°F 0 mm 0% 1 mph 44% 1015 mb 0 mm/h
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72°/72°°F 0 mm 0% 3 mph 22% 1014 mb 0 mm/h
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76°/76°°F 0 mm 0% 2 mph 21% 1013 mb 0 mm/h
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75°/75°°F 0 mm 0% 3 mph 24% 1011 mb 0 mm/h
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63°/63°°F 0 mm 0% 5 mph 40% 1013 mb 0 mm/h
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59°/59°°F 0 mm 0% 2 mph 53% 1014 mb 0 mm/h
2:00 am
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56°/56°°F 0 mm 0% 2 mph 59% 1013 mb 0 mm/h