Pros and Cons

Bridge Type	Pros	Cons
Suspension Bridge	Can span great distances with no intermediate support	Not typically used to allow for openings in the deck. If one cable brakes the whole bridge goes down
Bascule Bridge	Has an opening mechanism Uses counter weights to help ease the load on the machinery and allow for smooth opening.	Counter weights take up a lot of space
Cable Stayed Bridge	Can span great distance Has more than one cable supporting the main deck	Deck is not typically moved

Movement and bridge combinations

	Railroad crossing arm	Elevator	Turn Table
Suspension Bridge	Have the deck pivot at a point like a bascule bridge so that the deck will pivot and lift	Possibly have the deck sliding up cables with counter weights	Don’t know how this would work
Bascule Bridge	Same concept has a railroad crossing arm just on a much larger scale	Don’t know how this would work	Can have the deck pivot up partially and then rotate to give the clearance needed
Cable Stayed Bridge	Have the deck pivot at a point like a bascule bridge so that the deck will pivot and lift	Possibly create a pivot point and have some sought of moving cables to hoist the deck up along with counter weights	Each side of the bridge can rotate until enough clearance is given to get the object through