It's one of Scotland's most famous sites and has been photographed millions of times over the years, but rare footage found by Edinburgh Live shows how the bridge was maintained in its infancy.
Construction of the Forth Rail Bridge began in 1892, and it was completed in 1889 before it finally opened one year later to trains.
Standing proud at a total length of 2,467 metres, the bridge carries trains everyday from the north of Scotland, passing through North Queensferry in Fife and into South Queensferry.
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At its peak, well over 4000 people were employed in construction of the bridge and its estimated to have cost £3.2 million.
One of the greatest man-made feats, it didn't come without out huge human cost either - with just under 80 workers estimated to have perished throughout its construction.
And the bravery of those involved can be seen it the footage, as men traverse the steel beams without safety harnesses to maintain the bridge. You can watch the footage above.
Keeping the bridge its distinctive red was a never ending task, and by the time the full bridge was repainted it was time to start at the other end.
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But that came to an end in 2011 when the bridge was repainted in 2011 with a more durable paint.
The bridge has stood the test of time, and in 2016 Scots voted one of the greatest ever man-made feats.
It is also listed as a UNESCO heritage site, meaning its importance is recognised across the world.
Do you have any remarkable pictures of the bridge? We'd love to see them. Email us on news@edinburghlive.co.uk
