Verification and Adjustment
With renderings of the bents and stringers at hand, I printed them out at 1:1 on plain paper and cut them up with scissors. After taping the bents in place on the stringers, I gingerly posed the bridge in place on the layout.
If the results look pretty good, bear in mind this is the result of about a half-dozen iterations of adjustments to the height and position of the bents. The process was well worth the effort, and as a consequence, I'll need to "slenderize" some of the bents to avoid collision with the rock face behind it.
The next task will be tweaking the points at which the side braces will subdivide the bents vertically. This will likely be the "fussiest" part of the whole process, but once it's done, it's all downhill from there.
It was suggested that I laser the side braces as well, but as I'd indicated before, the trestle is curved—and not evenly at that—which means every set of cross braces is different. In the end it'll be a lot less trouble to simply measure and cut the pieces to fit. Yes, lots of work, but actually easier—and in a way more satisfying—than doing it mathematically.
OK, enough time spent upright; it's time to return to a reclining position, sorry to say.