The northbound lanes of Interstate 5 south of Wilsonville were blocked by a crash involving a semi truck Monday morning, snarling traffic for hours.
The crash happened at about 10:30 a.m., according to the Oregon Department of Transportation. Traffic was being detoured through the rest area, but it created long delays.
ODOT was asking people to take alternate routes.
Traffic cameras also showed that people trying to avoid the traffic by diverting onto Highway 99E also had caused another backup of travel.
ODOT did not give an estimate of when the incident would be removed.
Bill Poehler covers Marion County for the Statesman Journal. Contact him at bpoehler@StatesmanJournal.com