It was British Rails inadequate painting schedule that caused most of the recent Forth Bridge problems. Now it has been done using a special paint developed for protecting the legs of North Sea Oil platforms.
They claim that it will last 25 years.
ISTR something similar for the Saltash suspension bridge, between Devon and Cornwall at Plymouth. Perhaps it's a problem with all suspension bridges.
More the lack of a painting schedule. There was a complete halt to painting in the run up to privatisation and Railtrack continued the neglect.
The Forth road bridge is the same. It's certainly a problem with bridges of a particular age, from when they started making the cables in situ until they started making a better job of weatherproofing them.
You'd have thought that they'd enclose them and pump oil along them or around them to preserve them better?.
I know that the stay wires on TV masts are absolutely impregnated with a heavy grease for that same reason...
Like the way old Mini sub frames used to rot the front ones never did all that Oil leaking from the engine and rear no oil never lasted any time at all..
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