Unstable slope means more blasting on Interstate 81 in Montgomery County Timothy Martin July 30, 2013 1 minute read An unstable slope is expected to cause delays starting tomorrow On Interstate 81 in Montgomery County. WFIR’s Timothy Martin reports. Share: Post navigation Previous: Will drop in gas prices continue?Next: New partnership benefits Explore Park Related Stories New Study Ranks Virginia’s Public Schools 6th in the Nation Emma Thomas July 24, 2026 A local hero of the American Revolution is honored with a new exhibit by the Salem Museum & Historical Society Gene Marrano July 23, 2026 Plays, plays everywhere … and a closing night artist reception and lecture at Hollins Gene Marrano July 22, 2026