tie up to pilings that are next to the channel that runs under the bridge.. the deeper side if there is one.
also pay attention to where the little birds are pooping that make thier little mud houses under the bridges.
set a few poles, tightlined at different depths. use double hook righs with minnows.
be patient.. fish travel the channels at night looking for schools of shad that are moving shallow to feed. the fish can come thru in waves, or they may comes thru one time, bite like crazy, then its all over.
usually though right at dusk you will get some action.. get set up before its dark, dont be farting around in the dark trying to get set up.
JESUS CHRIST IS THE WAY, THE TRUTH. AND THE LIGHT. !!!! PUT ALL YOUR TROUBLES IN JESUS HANDS, YOU WILL SEE WHAT HE CAN DO.