During the 1890s, a wider replacement bridge, which was designed by Edward Andrews, was constructed by Head Wrightson on behalf of the London & South Western Railway.

This structure, which was built directly alongside its predecessor, comprises three spans of wrought iron bow string girders, which carries a pair of railway tracks across the river.

Furthermore, in order to accommodate the bridge's construction along the south side of the river, several properties within The Terrace, a street of modest Georgian houses, had to be demolished to provide sufficient clearance, as the structure and connecting lines pass directly through the estate.

[4] However, in the present day, while elements of Locke's incarnation of Barnes Bridge remain in situ, it is no longer in use for rail traffic, having been replaced by a newer structure built alongside.

[4] Towards the end of the nineteenth century, several engineers and officials had come to question the viable lifespan and long term stability of cast iron structures, such as the original Barnes Bridge.

[4] The new Barnes Bridge was designed by the civil engineer Edward Andrews and built by the contractor Head, Wrightson & Co.[4] It consisted of three spans of wrought iron bow string girders, which were supported by extended piers and abutments.

[4] During the first half of the twentieth century, it became common for the railway company to sell tickets to race spectators for access to the bridge as a means of generating revenue from the provision of a unique vantage point.

During November 2017, an application for planning permission was submitted to Hounslow London Borough Council which proposed the construction of a bespoke pedestrian footbridge spanning along the bank of the Thames beneath Barnes Bridge, as a means of eliminating the need for a diversionary route in the future.

[10][11] The Dukes Meadows Footbridge, underneath the northern span of Barnes Railway Bridge, was opened in 2023 to allow the Thames Path to run beside the river at this point, rather than taking a detour of hundreds of metres to the nearest foot tunnel.

[12] The architects of that footbridge, Moxon, have also drawn up plans for a landscaped "green walkway" accessed by ramps on the disused 1849 railway bridge spans, joining up with the Thames Path.