It has been over 1 year since an excavation for a new Wal-Mart store in Kilbuck Township, PA caused a massive landslide that closed Route 65 for two weeks, and temporarily closed a rail line as well. Strong storms last month apparently caused an increase in the rate of movement of the now instrumented slide. The state DEQ feels the movement is deep-seated, but Wal-Mart disagrees. See our previous coverage or go to the video from the local CBS affiliate or news and photos from the local ABC affiliate.
A report has been released by the NYSDOT on the Scoby Hill Landslide which has impacted a 4.2-mi improvement project of Route 219. The report, dated May 20, 2008 was headed to an FHWA peer review panel.
The Feds were call in to help because of the unusual nature of the landslide. The slip surface is very deep, approximately 30-m (100-ft) below the surface and below all of the design phase investigations. And the remolded shear strength of the silty clay forming the slip surface was only 12-14 degrees.
Read on for more details of the slide. (Photo by NYSDOT)