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 Radford professor offers March Madness bracket strategy ahead of NCAA Tournament Ian Price March 17, 2026 0 Greater Williamson Road Area Business Association rolls out Restaurant Week Gene Marrano March 17, 2026 0 Roanoke under tornado watch as severe storms, 40-degree temperature drop loom Ian Price March 16, 2026 0