Wales. Because of its unique location, over the waters of a dam with the border running down the centre of the body of water, the Bethanga bridge is the only built structure shared by both New South Wales and Victoria. Bethanga Bridge is of historical and scientific (technical) significance to New South Wales. Bethanga Bridge is of historical significance to tNew South Wales for its associations with the construction of Hume Dam. It is also of historical significance for its associations with The River Murray Waters Agreement and the River Murray Commission which had the task of putting the agreement into effect. The Agreement was a landmark document that drew on the cooperation of New South Wales, Victoria and South Australia to regulate the flow of the Murray River. Bethanga Bridge is of scientific (technical) significance for the unusual use in Victoria of Pratt trusses, a predominantly NSW technology, its construction. The Pratt truss was frequently used in New South Wales but this represents a rare example of its use in Victoria. The use of this system in this instance, its design by New South Wales and construction by Victoria, also represents the cooperation of New South Wales and Victoria in the development and ongoing use of major infrastructure. Bethanga Bridge was listed on the New South Wales State Heritage Register on 26 May 2006 having satisfied the following criteria. The place is important in demonstrating the course, or pattern, of cultural or natural history in New South Wales. Bethanga Bridge is of historical significance to New South Wales for its associations with the construction of Hume Dam, a major national undertaking of the early twentieth century. It is also of historical significance for its associations with The River Murray Waters Agreement and the River Murray Commission which had the task of putting the agreement into effect. The Agreement was a landmark document that drew on the cooperation of New South Wales, Victoria and South Australia to regulate the flow of the Murray River. The bridge reflects the engineering and design approaches of the State Rivers and Water Supply Commission and New South Wales Public Works Department in the late 1920s and the influence of American engineering Practice in the use of the Pratt truss. The bridge is also a significanc marker of the anticipated development that the new Hume Weir was expected to bring to the region, serving, as