No no, they said the bridge would be
under a river. Totally different.
But seriously. If you're trying to figure out the entity setups, the Ultimate Mapper's Resource Pack over in the tutorials section has a file containing entity setups for all the standard gamemodes. Just find the one that's clearly for KOTH and use it as a guideline for placing the entities in your map. If you want help with something specific, feel free to drop back in here. If you want help with a
lot of something-specifics, I recommend the chat room.