I recently installed a 6-81248 Girder Bridge. Like other Orgforum members, my train loses power on the bridge. I have power to track at both ends of the bridge, but the bridge itself is dead. Is there a fix for the problem? Other members mentioned trying to bend the pins at the end of their bridges, but to no avail.
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Maybe you could add a couple of feeder wires (hot and common) directly to the bridge track.
You probably already saw this thread but it sounds like they had issues with these that were never really resolved: https://ogrforum.com/...bridge-does-not-work
Adding to what Steve said. You could also try soldering jumper wires to the rails at either end. Of course, if you have the option to return it doing so will negate that.
You stated you tried this as well? This is the typical recommendation for Fastrack continuity issues:
Since I don't have the 10" girder bridge in question here. I decided to read a couple of the previous posts on this same issue. The girder bridge rails are made with aluminum (galvanic reaction with other metals leading to poor or no conductivity) and that they also reportedly don't have the electrical connection tabs underneath like typical FasTrack. Then another possible solution occurred to me.
Would the mounting tabs (the rounded ones that secure the rails to the roadbed) from a normal 10" Fastrack section correspond/line-up with the holes and the way the aluminum rails mount to the girder bridge? If so, one could potentially replace the girder bridge rails with ones from a regular 10" FasTrack donor piece, maybe? Would someone with the girder bridge and 10 Fastrack be interested in checking to see if this swap might be possible? If the other tabs line up, then you'd either have to make new cutouts in the bridge under the rails for the electrical connection tabs or remove them. Yes, this would be a lot of work, but hey if you're here reading this, then you must like this kind of thing, right? 
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