Storm Floris is expected to cause widespread disruption throughout the day.
The bridge, in Coulsdon South, carries trains that run on the Brighton Main Line.
The installation is celebrating the 200th anniversary of the Stockton and Darlington Railway.
Engineering works are set to close several routes over the August bank holiday weekend.
West Midlands Trains runs the West Midlands Railway and London Northwestern Railway brands.
Resurfacing work will be carried out around the new Kings Heath station in Birmingham.
Buses will replace the trains throughout the entire closure between Gatwick Airport and Guildford.
The Lens on the Line exhibit features 17 images of the railway from across the country.
A railway users' group welcomes a move to ensure staff are present to operate a step-free crossing.
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