Judgment and order unanimously reversed on the law and facts, with costs, verdict reinstated and judgment directed in favor of appellant. Memorandum: There was evidence that the city placed a barrel of rock salt on the sidewalk, refilled it from time to time and that rock salt which spilled from the barrel caused the sidewalk to deteriorate, creating a dangerous condition. Prior written notice of a defective condition is not required where the defendant city causes or creates the condition. ( Filsno v. City of Rochester, 10 A.D.2d 663; Appelbaum v. City of Long Beach, 8 A.D.2d 818.)