UPDATE
This crash has been cleared.
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UPDATE
Some lanes are back open after a multi-vehicle crash on I-81 North in Roanoke County.
As of 9:30 a.m., traffic is backed up for about 1.5 miles.
ORIGINAL STORY
A multi-vehicle crash has closed all I-81 North lanes in Roanoke County, according to VDOT.
Authorities said the crash happened near mile marker 135.
As of 8 a.m., all northbound lanes remain closed.
Stay with 10 News for more information on this breaking news.