A wiper arm and assembly are disclosed. The wiper arm has a wiper arm holder, connected at one end to an output portion of a driving mechanism for the wiper arm that drives the wiper arm to swing back and forth in an outward-swinging direction, an extension arm pivotally connected to the other end of the wiper arm holder, a wiper arm end member located on the side of the wiper arm opposite to the wiper arm holder and configured to hold a wiper blade, and a washer assembly having at least a first nozzle, and a first conduit in fluid communication with the first nozzle. The first nozzle includes a nozzle unit, a first connector for the first conduit, and a bridge channel located between them, above the blade. The bridge channel is partially aligned with a segment of the wiper arm end member that is located above the blade.