(1) Any local authority, railway company, or other person liable to maintain a bridge carrying a public highway may, by notices in the prescribed form placed in the prescribed manner on the approaches to such bridge, prohibit any vehicle which with the load (if any) thereon exceeds the weight specified in such notices from passing over such bridge either (as may be specified in such notices) at all or at a speed exceeding the speed specified in such notices.
(2) Notices shall not be erected under this section in respect of a bridge unless some restriction on the use of such bridge is reasonably necessary to ensure that the traffic passing over such bridge shall not impose on such bridge a greater burden than it is capable of bearing and no such notice shall impose a greater restriction on the use thereof than is reasonably necessary for that purpose.
(3) Any person who claims that notices purporting to have been erected under this section have been so erected in contravention of t