Continuation of BigLobe Plarail Museum

What you are describing is the big red iron bridge, だいてっきょう. That one is the first generation iron bridge, which is somewhat rare on its own today. There are green block piers, and I think it will look more ancient and rarer with it. The orange piers with holes are the ones that don’t come separately, so these are way more rare and unusable than the bridge. Too bad that some Showa era idea layout plans in the catalogue use these orange piers and adapters in their layouts.