In message , at 12:36:40
on Fri, 13 Jan 2012, remarked:
There were extensive repairs to the M6 viaduct in the Castle Bromwich
area a couple of years ago, and the A14 flyover across Huntingdon
station is widely regarded as being about to fall down. One of the
bridges at the M6/M1 junction was replaced very recently.

http://www.bbc.co.uk/news/uk-england-16460505

Not sure how many of these are salt related.

Huntingdon viaduct already relies on extensive supplementary steelwork to
support it.

But why does it *need* the support? Is the underlying issue one of salt
corrosion.
--
Roland Perry