March 9, 2026 9:25 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
9:25 am, Mar 9, 2026
temperature icon 57°F
clear sky
Humidity: 25 %
Pressure: 1014 mb
Wind: 8 mph
Wind Gust: 7 mph
Clouds: 3%
Visibility: 10 km
Sunrise: 7:08 am
Sunset: 6:52 pm
  • Temperature
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11:00 am
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58°/58°°F 0 mm 0% 6 mph 31% 1013 mb 0 mm/h
2:00 pm
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59°/60°°F 0 mm 0% 5 mph 30% 1011 mb 0 mm/h
5:00 pm
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58°/58°°F 0 mm 0% 8 mph 37% 1009 mb 0 mm/h
8:00 pm
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48°/48°°F 0 mm 0% 5 mph 66% 1012 mb 0 mm/h
11:00 pm
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48°/48°°F 0 mm 0% 5 mph 78% 1014 mb 0 mm/h
2:00 am
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48°/48°°F 0 mm 0% 4 mph 81% 1014 mb 0 mm/h
5:00 am
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47°/47°°F 0 mm 0% 6 mph 81% 1014 mb 0 mm/h
8:00 am
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47°/47°°F 0 mm 0% 6 mph 82% 1016 mb 0 mm/h