A washing plant (10) comprises a battery (12) of washing and heat-disinfection machines (14, 16, 18) disposed along an alignment axis (X), able to operate in parallel with respect to each other in order to effect the washing and heat-disinfection, at least a translator slider (20) mobile in an automatic manner parallel to the alignment axis (X) in a front position to said battery (12), which receives the objects to be washed and both transports them in correspondence to the entrance of one of the machines (14, 16, 18) selected on each occasion depending on the washing program set or depending on availability, and moves them inside the desired machine (14, 16, 18) in a direction of feed (F) substantially perpendicular to said alignment axis (X), transport means (24) being provided to direct the objects to be washed toward the translator slider (20) operating in a direction of transport (Y) substantially parallel to said alignment axis (X). The translator slider (20) comprises a lower frame (22) associated slidably to the battery (12) of machines (14, 16, 18), in order to allow the movement parallel to the alignment axis (X), and a rotating upper frame (32) suitable to support the objects to be washed and which comprises movement means (34) to move the objects inside the desired machine (14, 16, 18) in said direction of feed (F), said rotating upper frame (32) being rotatably coupled to the lower frame (22) by means of rotation means (42), so as to be able to be rotated between a first position, aligned to said direction of transport (Y) of the transport means (24) and in which it is configured to receive the objects from said transport means (24), and a second position, aligned to said direction of feed (F) to direct the objects inside the desired machine (14, 16, 18).