Jacksonville's unofficial nickname is River City. Indeed the St. Johns river flows through downtown which means there are quite a few big bridges over the wide river, but almost every city I can think of has a river running through it.
My first cross of this bridge resulting in a delay. Just as I approached the structure red lights lit and a gate closed. The lift bridge rose alloying one ship to pass. Twenty minutes later I was on my way. The other major bridges on the river are high enough to avoid the need to cut off vehicle traffic for river traffic.