Clyde Arc & Glasgow Bridges
Funny you should mention the Forth Bridge - I crossed it yesterday and had the camera with me to try and get some shots - alas, time got in the way and I couldn't get any.
However, here's a couple of a bridge not far from my home in Glasgow - the new "Clyde Arc"
The third & fourth ones are the tidal Weir on the Clyde, about 150m from where I live. Very pretty at night!
French transporter bridge
Thisis a strange bridge near Rochfort in west France. Not the best shoy on a very grey day but it is a weird concept being transported across a river on a piece of suspended roadway.