The abnormal rotation of skewed and curved bridge superstructures is described and illustrated. Various types of compound bearings that accommodate this type of rotation are described. Specific examples of structure distress due to abnormal rotation and inappropriate bearing selection are given. Although present design specifications are mute concerning this phenomenon and research that is specifically focused on it is scarce, it is suggested that the designers of severely skewed or curved bridges should consider the consequences of abnormal rotation and furnish an appropriate bearing design for such structures.(Author)