The Pyrmont Bridge, a heritage-listed swing bridge across Cockle Bay, is located in Darling Harbour, part of Port Jackson, west of the central business district in the City of Sydney local government area of New South Wales, Australia.

Since 1981 the bridge has carried pedestrian and bicycle traffic only, as motor vehicles were diverted to adjacent freeway overpasses.

[6] In 1891 competitive designs were invited for a new bridge on the south side of the old structure, but due to the economic depression no further action was taken until 1894, when, after prolonged inquiry and the consideration of about twenty six schemes, the Parliamentary Standing Committee on Public Works decided in favour of a design for a steel bridge with a swing span of 16 metres (54 ft), affording two 21 metres (70 ft) clear fairways, submitted by the Department of Public Works (PWD).

An elevated pedestrian walkway was constructed across the Western Distributor viaduct to link the eastern end of the bridge to Market Street at surface level.

The SHFA commissioned a design brief to look at options for future enhancements including furniture, lighting and pop-up cafes.

The projets include $15m to replace ferry wharves in Cockle Bay and $20m to refurbish public spaces at Campbell's Cove at the Rocks and Darling Harbour.

The swingspan weighs 1,000 tonnes (1,100 short tons) and is supported on a base made from concrete and Hawkesbury Sandstone.

[6] The bridge was closed to vehicular traffic on 7 August 1981,[3] the traffic having been diverted over the Western Distributor freeway structures built further south of Cockle Bay, and it was then re-opened as a pedestrian bridge as part of the re-development of Darling Harbour as a recreational pedestrian precinct.

The swing bridge remains in operation, and opens to a schedule managed by the Sydney Harbour Foreshore Authority.

Only a narrow pedestrian and cycle path still connects the eastern end of the bridge to the viaduct and to King Street.

Upon the closure of the Monorail in June 2013 the hydraulic lifting rams and support infrastructure were removed, and the control cab was relocated to its original position in the middle of the bridge.

[12] As at 24 July 2001, Pyrmont Bridge is an item of State heritage significance for its aesthetic, historical and scientific cultural values.

An essential link between the city and the inner western suburbs, Pyrmont Bridge is closely associated with the economic and social development of Sydney at the end of the 19th century.

[1] Pyrmont Bridge was listed on the New South Wales State Heritage Register on 28 June 2002 having satisfied the following criteria.

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.

[1] The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales.

[1] The place has potential to yield information that will contribute to an understanding of the cultural or natural history of New South Wales.

[1] The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales.