Double-tractor wreck pushes rig off of overpass 

A semi truck was pushed off of an interstate by another rig in a wreck on a Tennessee highway on Thursday. 

The accident happened on June 1st in Jefferson County. 

According to WREG 3 News, two tractor trailers collided on Interstate 40. The force of the impact sent one truck off the side of the overpass and onto Interstate 81 north, below the overpass. 

The crash spilled a load of bread and forced the closure of northbound I-81 as crews worked to clear the wreck and investigate the incident. 

No information on injuries or the cause of the wreck has been released.