I'm not a native English-speaker, but I will try my best.
As you can see on the title, I would like to build bridges over the water, because there are often ressources that you can't reach (for Example little Islands with copper-ore.
How about different types of bridges, maybe wooden brigdes, iron bridges and steel brigdes?
The better the bridge is (Wooden bridge < Iron bridge < Steel bridge), the more Healtpoint got it.
Furthermore you should be able to place buildings on them.
![Smile :)](./images/smilies/icon_e_smile.gif)
This is just for inspiration and Maybe you have more ideas about bridges?
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)