MONTGOMERY COUNTY, Va. -

UPDATE: The snow has stopped on Interstate 81 and State Police say all accidents are cleared.

This after major delays on Interstate 81 in Montgomery County Wednesday morning because of icy roads and wrecks.

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Southbound I-81 between Christiansburg and Radford is backed up for 4 miles. A tractor trailer wreck on the northbound side has a lane closed and is also causing delays.

We'll update the situation here on wdbj7.com. Please check back for details.