I'm trying to model the NY&LB, and I need to replace my Lionel single-track bridges with a more prototypical 2-track bridge. I'm thinking of Morgan (Cheesequake), Shark River, or Manasquan River, which are similar designs. I'm planning to scratch build, and power the bridge. Has anybody done something similar?
The bridges in question are the Scherzer-Type, not the walking beam.
I'm also looking for information on what I'll need to make the trunnion, bearings, etc.