UPDATE 1:20 p.m.: Crews have quickly cleared the tractor-trailer crash on I-81 north in Montgomery County.
VDOT says traffic is flowing normally with all lanes having been reopened.
UPDATE 1:00 p.m.: VDOT continues to say that I-81 north partially open at mile marker 111, between Radford and Christiansburg in Montgomery County, due to a tractor-trailer crash.
VDOT says that backups are approximately two miles behind the crash.
Drivers should avoid the area and find an alternate route if traveling in this area.
MONTGOMERY COUNTY, Va. (WFXR) – A tractor-trailer cash south of Christiansburg has closed all northbound lanes.
According to VDOT, the crash is located at mile marker 111.
If you are planning on heading in this direction, you are urged to find an alternate route or expect significant delays.