Jjalex1:
Come on…, You really have to give us a few hints, a few clues as to what you are actually looking at. We still can’t see it from here. And, these forums aren’t some glorified game of 20 questions. Plans, dimensions, loads, mech. equipment, motion direction and limits, etc. etc. That is, enough real engineering info. and detail so we know what you are talking about. You should be talking to the bridge owner about their needs and specs. As mentioned above by WARose talk with the people who are supplying the mech. components for the bridge, as to what they need.