I just finished my first segment of bench work and thought I'd share it with you fine folks. I've got a long way to go to be able to run my N&W articulated engines higher than floor level but it's a start. I've tried to adapt an under arch span bridge theme reminiscent of Lionel's Hellgate bridge. It's made of steel and so far it's pretty strong and near impossible to knock out of square. My 160 pound son sat in the middle of the long span and she held with next to no deflection.
The next effort will be to construct curved segments capable of carrying O84 curves.