A windshield wiper assembly is disclosed as comprising a one-piece blade superstructure fabricated of a molded polymeric material having a curvalinear shape such that uniform wiping pressure is applied along its entire length as a result of a force being exerted at the center of the superstructure by means of an ancillary wiper arm, the superstructure being provided with a resilient windshield engaging wiper blade which is secured to the superstructure by a coextensive retainer member adapted to be secured to the superstructure by means of a plurality of longitudinally spaced retaining finger formed integrally of the superstructure.