examples of arch bridges
Among arch bridges, the position of the deck in relation to the arch varies.
half-through arch bridge 
Bridge whose deck is located within the arch from which it is suspended in the middle, and on which it rests, at each end.
portal bridge 
Bridge resting on diagonal beams that are embedded in the deck.
through arch bridge 
Bridge whose deck is located below the arch from which it is suspended.
deck arch bridge 
Bridge whose deck is located above the arch upon which it rests.