If you get chance to go and see it. Take a good look from ground level around South Queensferry. Then pop up to the station platform thats on the South side and get a good look at the bridge then. It certainly puts things in to perspective.
And if you've go a boat go for a spin around the supports and adjoining small islands. Seems even more impressive then.
Whatever you do don't park on the slipway at Southqueensferry. But their again RIBNETers shouldn't be doing that sort of thing.