UPDATE: Tractor-trailer fire cleared from I-81 North in Botetourt County

The accident has been cleared.

Traffic was backed up to three miles at one point.

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8:40 a.m.: A tractor-trailer fire is causing delays on Interstate 81 in the Arcadia part of Botetourt County.

The fire is near mile marker 167 on Interstate 81 North.

The north right lane is closed.

Traffic is backed up about a three miles.

According to the Virginia Department of Transportation, it's not clear how long the lane will be closed for.