I-5 comes to a slow down, after a semi-truck catches fire just before the first Medford exit.
Police received the call just before 1 Thursday morning, of a vehicle fire in the northbound lanes of Interstate 5.
Officials say the brakes caught fire.
Fire crews were able to extinguish the flames before it spread to the truck.
Officials we spoke with say with the high fire threat, the situation could have been much worse.
Traffic is not affected Thursday morning from the fire.
Meanwhile, the investigation will continue Thursday.