(Source: Railway Track & Structures, June 11, 2018)
NEW YORK — The National Transportation Safety Board (NTSB) issued a preliminary report on the May 19, 2018, derailment of a CSX train near Alexandria, Va. While a probable cause was not determined, based on the ongoing investigation, NTSB did note the presence of a washout where the ballast was subsided from the track structure along a curve. NTSB investigators found that this fill was subsided for about 26 feet (at a depth of 18 inches) and investigators also identified a flange mark traversing over the top of the rail head in the curve and the at the location of the subsided subgrade.
Full story: www.rtands.com