A semi-truck fire shut down all northbound lanes on Interstate 5 through the Grapevine Wednesday morning, causing significant traffic backups.An Amazon trailer caught fire around 9:15 a.m., according to CHP logs, and eventually became fully engulfed.All northbound lanes were temporarily stopped as fire crews worked to extinguish the flames.The fire is now out, but one lane remains closed as crews continue working at the scene.CHP reported the backup stretched at one point to the Old Lebec Brake Check area.No injuries have been reported.This story was reported on-air by a journalist and has been converted to this platform with the assistance of AI. Our editorial team verifies all reporting on all platforms for fairness and accuracy.Stay in Touch with Us Anytime, Anywhere: Download Our Free App for Apple and Android Sign Up for Our Daily E-mail Newsletter Like Us on Facebook Follow Us on Instagram Subscribe to Us on YouTube ...read more read less