April 13, 2026 1:31 PM

Jackknifed Big Rig Creates Traffic Havoc In The Cajon Pass Thursday Night

CAJON PASS, CA. (Pain In The Pass) >> A jackknifed big rig was disrupting traffic in the Cajon Pass late Thursday night.

California Highway Patrol and San Bernardino Fire Department received calls of a crash. It was reported on southbound Interstate 15 about a mile before the Highway 138 exit. The crash happened at about 10:29pm Thursday on April 29, 2021.

The crash had traffic down to just the left shoulder partly the fast lane for about an hour. The semi was removed from the highway around 11:30pm and all lanes were back open a few minutes later.

The vehicles involved in the crash were a big rig semi which jacknifed, blocking half of #1 lane, and all of the #2, #3, and the #4 lanes. The other vehicle reported in the crash were a green pickup truck with no damage and may not have been involved.

All drivers did decline medical aid at the scene.

Traffic was backed up as far as Oak Hills Road. There are no other details released.

This incident will be under investigation by the California Highway Patrol San Bernardino Office. CHP says additional information will be updated as it becomes available.

There are more ways to follow the Pain In The Pass. Join the Traffic Group on Facebook with over 95,000 members. Join the NEW group on MeWe. Like us on Facebook,

loader-image
Cajon Pass
1:31 pm, Apr 13, 2026
temperature icon 50°F
overcast clouds
Humidity: 63 %
Pressure: 1016 mb
Wind: 5 mph
Wind Gust: 9 mph
Clouds: 90%
Visibility: 10 km
Sunrise: 6:20 am
Sunset: 7:19 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
2:00 pm
temperature icon
52°/52°°F 1 mm 100% 5 mph 61% 1015 mb 0 mm/h
5:00 pm
temperature icon
51°/52°°F 1 mm 100% 9 mph 58% 1014 mb 0 mm/h
8:00 pm
temperature icon
47°/48°°F 0.32 mm 32% 8 mph 63% 1016 mb 0 mm/h
11:00 pm
temperature icon
45°/45°°F 0 mm 0% 8 mph 76% 1017 mb 0 mm/h
2:00 am
temperature icon
44°/44°°F 0 mm 0% 7 mph 83% 1018 mb 0 mm/h
5:00 am
temperature icon
42°/42°°F 0 mm 0% 2 mph 82% 1018 mb 0 mm/h
8:00 am
temperature icon
46°/46°°F 0 mm 0% 2 mph 62% 1019 mb 0 mm/h
11:00 am
temperature icon
55°/55°°F 0 mm 0% 2 mph 43% 1018 mb 0 mm/h