WYTHE COUNTY, Va. – UPDATE
The wreck is now cleared.
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ORIGINAL STORY
A wreck is causing a major backup on I-81 North in Wythe County on Wednesday morning.
State police responded to the wreck at mile marker 83 around 6:20 a.m. That's near the I-77 interchange.
There is thick fog in the area.
The northbound right lane is blocked and traffic is significantly backed up.
State police dispatch was not aware of any injuries.