Glebe Island Bridge, Heritage swing bridge in Pyrmont, Australia

Glebe Island Bridge is a disused steel Allan truss swing bridge over Johnstons Bay, linking Rozelle and Pyrmont. Its swing span pivots on a central pier, with a truss framework of diagonal and vertical members beneath the roadway and a diamond-lattice railing above. A small peaked-roof tower and a curved street lamp stand at the western end, and the bridge rests on timber piles beside a timber wharf deck.

The current structure was built between 1899 and 1903, replacing an earlier timber beam bridge with a hand-cranked swing span from 1862. This transformation allowed it to carry heavier loads and accommodate modern vessel traffic.

The bridge is known as RMS Bridge No. 61 in the Roads and Maritime Services numbering, and its Allan truss swing span has stood permanently open since 1995, when the Anzac Bridge replaced it. Proposals to reuse it for pedestrians have been made but not realised, so it remains a disused structure over Johnstons Bay.

The swing span has stood permanently open since the Anzac Bridge replaced it in 1995, so the crossing is not usable and proposals to reopen it for pedestrians have not been carried out. The structure is best seen from the Pyrmont and Rozelle shores of Johnstons Bay, where the open span and timber wharf are visible.

The swing span has stayed permanently open since the Anzac Bridge replaced it in 1995, so boats pass through a gap the bridge once closed for road traffic. It was listed on the New South Wales State Heritage Register on 29 November 2013, and earlier on the now-defunct Register of the National Estate on 19 April 1989.