Answer:
I build bridges of silver and crowns of gold. What am I?
You can see me in water, but I never get wet. What am I?
I am rarely touched but often held. If you are smart you'll use me well. What am I?
Brown I am and much admired; many horses have I tried; tire a horse and worry a man; tell me this riddle if you can.
When you take away the whole from me there is always some left.
I have feet on my head