Interstate 95 Northbound has reopened in Clinton between exits 63 and 64 after being closed for almost three hours.
It was closed from around 3:50 a.m. to around 6:30 a.m. because of a jackknifed tractor-trailer that was across the road.
Cars remained stuck on the road behind the truck until it was moved.
There are several other crashes and spinouts on roads across the state.