The Wyaldra Creek railway bridge is a heritage-listed former railway bridge that carried the Gwabegar railway line across the Wyaldra Creek at Gulgong, in the Mid-Western Regional Council local government area of New South Wales, Australia. The property was owned by Transport Asset Holding Entity, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 2 April 1999.

The bridge was demolished in 1987.

The bridge was built in 1909 as part of the extension of the railway from Gulgong to Dunedoo. The construction of the bridge was reported to be the main challenge for the contractors building the extension. Numerous difficulties were experienced sinking the bridge cylinders "through the drift sand to a very hard and uneven basalt at the bottom of the creek", and progress was slow, but it was completed by December 1909. The Dunedoo extension was formally opened in December 1910.

The bridge carried a single-track 4 ft 8+1⁄2 in (1,435 mm) standard gauge railway on an open deck (with transomes). It spans were 4.3 metres (14 ft), 7.3 metres (24 ft), three at 12.2 metres (40 ft), 7.3 metres (24 ft) and 4.3 metres (14 ft). The four shorter approach spans were timber girders. The three 12.2 metres (40 ft) spans were timber trusses of the Howe-type with timber compression diagonals, vertical tension rods and six bays. The piers were timber on concrete bases; at least some of the piers were sheeted.

The bridge was demolished in 1987.

The Wyaldra Creek railway bridge was listed on the New South Wales State Heritage Register on 2 April 1999.

• List of railway bridges in New South Wales

This Wikipedia article was originally based on Gulgong railway bridge over Wialdra Creek, entry number 01038 in the New South Wales State Heritage Register published by the State of New South Wales (Department of Planning and Environment) 2018 under CC-BY 4.0 licence, accessed on 2 June 2018.

Media related to Wyaldra Creek railway bridge, Gulgong at Wikimedia Commons