Here are 2 shots of a road bridge in Nairn. It's really 2 bridges in one as the older stone bridge has a concrete one (1936) alongside to widen the road. Driving over it you wouldn't know but from underneath the difference is clear.
This is a suspension foot bridge near Tain (famous for Glenmorangie malt whisky). As you can see the bridge dates from 1902 and the Health & Safety guys have been at work - probably with good cause as the footings are undermined and some of the wood 'deck' has seen better day. Of course fixing it would be better than sticking-up a notice but guess what costs the least!