Northam Bridge is a road bridge carrying the A3024 from Southampton to Bitterne and beyond. It is the main road bridge east of the city.
The original bridge was a single-carriageway wooden toll bridge constructed in 1799. It was replaced by an iron bridge in 1899. Tolls continued on the bridge until it was transferred from private ownership in 1929. This explains why at the time of classification, Bitterne Road was unclassified.
The current bridge was constructed in 1954 as part of a general plan to dual and improve Bitterne Road as a high-quality commuter route to the city centre from the new suburbs. It was the first prestressed concrete road bridge to be opened in Britain.