Unstable slope means more blasting on Interstate 81 in Montgomery County Timothy Martin July 30, 2013 1 min read An unstable slope is expected to cause delays starting tomorrow On Interstate 81 in Montgomery County. WFIR’s Timothy Martin reports. About the Author Timothy Martin View All Posts Share: Continue Reading Previous: Will drop in gas prices continue?Next: New partnership benefits Explore Park Related Stories 1 min read New Cancer Center’s goal is to reduce local mortality rates Denise Membreno August 15, 2025 1 min read Latest Roanoke Valley Healthy Living Index shows progress Gene Marrano August 15, 2025 1 min read Sheetz opens another location in SW Roanoke County Gene Marrano August 14, 2025