A tractor-trailer was driving up a hill, going about 35 mph, in the right lane, according to Levan. An SUV traveling behind the truck was involved in the incident. One man was pronounced dead at the site, though it's unclear how many people were ultimately hurt.

I-476 Northbound was operating at one travel lane but has since reopened. PennDOT said all debris had been cleared but did not provide any additional information about the accident or those involved. Witnesses were asked to contact local officers if they had details or insight related to the accident.