Not here it isn't. As per RCW 46.61.755:
(1) Every person riding a bicycle upon a roadway shall be granted all of the rights and shall be subject to all of the duties applicable to the driver of a vehicle by this chapter, except as to special regulations in RCW 46.61.750 through 46.61.780 and except as to those provisions of this chapter which by their nature can have no application.
RCW 46.61.750 through 46.61.780 cover:
750 - penalties
755 - the above
758 - required to use hand signals
760 - move use a seat
765 - must not cling to vehicles
770 - must keep as far right as is safe to do so
775 - must not carry anything that requires two hands
780 - lamps and reflector requirements
No where does it permit a bicycle to pass a vehicle that's stopped waiting for traffic on the right side of the vehicle. They could pass on the left if passing were permitted, but not split between lanes (that would be passing on the right of the left lane cars).