It's my pleasure to announce that the HO train bridge pillars print well in N scale with a 54% reduction.
Please refer to the HO parts: (base plate, pillar parts of various heights, top parts)
https://www.thingiverse.com/thing:6406070
The STL file included here is at HO scale. So reduce it in your slicer software to get a N scale part. ( 55 % )
Parts for double tracks are in preparation.
PileHO-30V2.stl | 600.7KB |