ORLANDO, Fla. -

Orlando police blocked off two lanes of Interstate 4 after a semi-truck jack-knifed, sending one person to the hospital with injuries.

Eastbound I-4 opened roughly three hours after the crash, that happened just south of Universal Boulevard. The semi jack-knifed and slammed into a tree in the median stalling traffic past Sand Lake Road. Crews sprayed down the scene because the truck appeared to be leaking fuel.

Most drivers had no idea what happened.

"It looked very bad coming around. I wasn't sure what had happened, but I knew that I didn't want to get involved in that traffic," said Julio Mojica, who was one of the few drivers able to take the last exit before getting stuck like everyone else.

"It looked like a horrible situation to be in," said Mojica. "Not very often to see something that bad, especially during the holiday time, it's a tragic thing to happen."

After seeing the wreck first-hand, it's a reminder for him and others, to pay attention on the road.

"You've got to be extra careful," said Mojica. "Make sure that you don't make the wrong turn, cut in front of a big truck or just not using your turn signals can probably cause something that bad."

Police have not said if they know what caused the truck to run off the road.