2 tractor-trailer wrecks cause major backups on I-81

ROANOKE COUNTY, Va. – Two tractor-trailer wrecks are causing traffic issues on I-81.

The southbound left lane is closed at mile marker 143 in Roanoke County, near the I-581 interchange. 

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The northbound left lane is closed at mile marker 147, just past the Hollins exit. 

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