Lamington Bridge, Arch bridge in Maryborough, Australia.

Lamington Bridge is a low-level reinforced concrete girder bridge over the Mary River, linking Ferry Street in Maryborough to Gympie Road in Tinana. It has eleven spans of 15.2 metres, a solid deck 6 metres wide, and reinforcement made from railway rails bolted to the pier tops. It was designed to be inundated during floods.

A timber bridge was washed away by floods in 1893, prompting engineer Alfred Barton Brady to design this concrete replacement. It opened in 1896 and marked an important shift in bridge construction methods for the region.

The bridge is named after Baron Lamington, Governor of Queensland from 1895 to 1901, and was opened to traffic on 30 October 1896 by David Hay Dalrymple, the Minister for Public Works. Its low, flat profile is deliberate: the deck goes under water once the Mary River reaches 5.5 metres, most recently in the March 2025 flood.

The bridge accommodates both vehicles and pedestrians and is easily accessible from either side of the Mary River. You can view the structure from the riverbanks or while crossing it.

Steel reinforcement was incorporated directly into the concrete during construction, making it one of the earliest examples of this technique in Australia. This innovation gave the bridge greater strength and longevity than traditional concrete designs.