swing span of Pyrmont Bridge was one of the largest in the world. It was one of the first swing bridges to be powered by electricity. The timber approach spans demonstrate a rare example of deck type Allan trusses; there being no other known example. The bridge's Australian design and technological innovation was a source of pride for the people of NSW. Despite the demolition of the eastern approach to the bridge and the construction of the mono-rail track, Pyrmont Bridge retains its essential heritage values. Pyrmont Bridge was listed on the New South Wales State Heritage Register on 28 June 2002 having satisfied the following criteria. The place is important in demonstrating the course, or pattern, of cultural or natural history in New South Wales. Pyrmont Bridge, an essential link between the city and the inner western suburbs, is closely associated with the economic and social development of Sydney at the end of the 19th century. Pyrmont Bridge is closely associated with Percy Allan, PWD Engineer-in-Chief of bridge design, with the assistance of JJ Bradfield and Gordon Edgell. Percy Allen was responsible for the introduction of American timber bridge practice to NSW, and designed over 500 bridges in NSW. The place has a strong or special association with a person, or group of persons, of importance of cultural or natural history of New South Wales's history. Pyrmont Bridge is closely associated with Percy Allan, PWD Engineer-in-Chief of bridge design, with the assistance of JJ Bradfield and Gordon Edgell. Percy Allen was responsible for the introduction of American timber bridge practice to NSW, and designed over 500 bridges in NSW. The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales. Pyrmont Bridge demonstrates a high level of aesthetic value in the stonework and carved stone detailing of the bridge approaches, pivot pier and rest piers, as well as displaying the high aesthetic values of the timber and steel bridge structures . The watchhouse also demonstrates fine architectural detailing. The place has a strong or special association with a particular community or cultural group in New South Wales for social, cultural or spiritual reasons. When completed the Pyrmont Bridge was regarded as a landmark in the development of Australian engineering skills and technological innovation, being favourably compared with the technical achievements of the recently completed Tower Bridge in London. Its