A pickup truck pulling a trailer on northbound I-5 just south of South 272nd Street in Federal Way erupted into flames after a collision.
South King King Fire and Rescue firefighters said the incident happened after 6 p.m. Thursday.
South King Fire tweeted video that showed the trailer and another vehicle on fire.
Flames and smoke were seen shooting into the air.
Washington State Patrol troopers said everyone in the pickup escaped without injury.
The crash caused the four right lanes to be blocked.
The collision is under investigation.
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