The fire at Cleveland Industrial Estate in Darlington is causing disruption on the nearby east coast rail line.
Because of this, there are delays of up 60 minutes to trains between Northallerton and Newcastle via Darlington.
These delays will continue until further notice.
More top news
Patchy cloud and a few spells of sunshine expected on Sunday for the NE. An odd patch of rain is possible anywhere
A group of protesters angry at threats of closure to children's centres in Newcastle have marched on a council-run surgery.
Breezy 24 hours, but not a bad Sunday in prospect