A southbound red pickup truck pulling a utility trailer lost part of its load of lumber at about 8 a.m. Wednesday on the Medford viaduct, creating a four-car pileup as vehicles swerved to miss the wood but continuing on its way.
Oregon State Police, Oregon Department of Transportation and Medford fire crews responded to the scene. The left lane of I-5 was blocked for about an hour, creating a backup all the way to the north Medford freeway exit.
"It (was) a mess," ODOT spokesman Gary Leaming said Wednesday morning. "Traffic is running hard today, because (it's) the biggest travel day of the year."
After the lane was reopened, ODOT crews spent another hour clearing debris from the shoulders of the freeway, ODOT spokesman Jared Castle said.
Police pulled over a few description-matching vehicles, said OSP Lt. Gregg Hastings, but were unable to locate the red truck.
One person was transported to Asante Rogue Regional Medical Center with minor injuries, Hastings said.