TRAFFIC ALERT: Southbound I-81 Shut Down - FOX 21/27 WFXR Roanoke/WWCW Lynchburg News, Weather

TRAFFIC ALERT: Southbound I-81 Shut Down

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VDOT is closing both lanes of southbound Interstate 81 in Montgomery County from the Dixie Caverns exit to the Christiansburg exit starting at 4:30 p.m. Tuesday due problems with an unstable slope in a blasting zone.

VDOT says the crack on the side of Christiansburg Mountain has increased from approximately 50 feet to 120 feet in length.

The closure is to protect drivers from a potential landslide.

VDOT says a detour will remain in place for at least one day, but could stay in effect for as many as 10 days.