You should fish the river channel edge. When you are on the ice, look right and you should see the pillar on the bridge. I fish between 10-15' right there on the channel edge.
That's a very dangerous spot to fish though. I was fishing the 105 bridge once and almost lost my auger when I drilled a hole. The water level was 3-5 under the ice level. Just make sure you see others out there before you fish this spot