Thank you, Peter!!! I am certainly not a woodworker either! 
If you were here, you would see that almost all my saw cuts are cock-eyed, and I have lots of holes in the wood, where I drilled and found out that won't work. I have lots of wood scraps from the trial and error, but have been able to reuse some in building the piers for the high bridge. 
So here are the two basic piers with a spliced 1x6 acting as the strength to hold the delicate Atlas through truss. The 1x6 and bridge are just sitting on top unattached to prove I got the pier heights right. Finally!!!!!! You can see I pulled out the two K-Line plastic timber piers to make room to get the high bridge worked out. I still have to figure out how I will hinge it on the left and maybe make a big deep pier for it to rest on to the right. I do have hinges that should work if I slide the bridge to the left a bit and build up the wood with all my scraps. 
Here it is from the outside with the through girder bridge lowered. No, Mike, I didn't do anymore wiring. I just lowered it very slowly with the speed adjustment lever on the Lionel 0100 12-vold DC power supply I bought in the late '60s to run my HO train.
I finally actually think this will work out! 
