A lot of hands were on board (11/7/09) to make the heavy work bearable!
Since there really is no one left who put these turntables together, we always have to improvise and use our common sense. Coming onto the bridge from the lead track, a piece of equipment will push the bridge down which causes the wheels to impact the ring rail, so we have to minimize the drop in order to minimize damage to the concrete wall. We placed a ring rail section under the bridge wheels at the entrypoint and then set another ring rail almost 180 degrees across under the other end of the bridge and pushed the bridge over it.
The bridge got bound up a bit so we moved the bridge from that rail and checked it for level. We found a few ties that had to be notched and then after notching them, re-checked for level. BOOM** Right on the money!
We drilled a series of holes in the ties to set spikes so we could temporarliy spike the rail to keep it in place.
Unfortunately, due to the inclement weather, there was no work session last Saturday (11/14/09) and today (11/21/09) I was not available to participate.
I will get more information as it becomes available.