The Algebuckina Bridge is a Victorian era railway bridge in the Australian state of South Australia located about 55 kilometres (34 mi) south-east of the town of Oodnadatta in the locality of Allandale Station on the route of the now-closed Central Australia Railway. It opened in January 1892. It was the longest bridge in South Australia until construction of the Seaford suburban rail line across the Onkaparinga River south of Adelaide in 2014.