Car-washing portal

An improved car-washing portal (1) is described, comprising at least one bridge-type structure (3) defining at least one front space (9) and at least one rear space (11) through which the passage of at least one vehicle (13), unmoving on a washing yard, is allowed, comprising at least first opening/closing means (15) of such front space (9) and at least second opening/closing means (17) of such rear space (11), such opening/closing means (15, 17) being adapted to create a closed environment inside such portal (1) and protected from external temperature when such opening/closing means (15, 17) are in a closing position of such spaces (9, 11).