This is an N-Scale model train viaduct. I built this to be a wall mounted bridge. The bridge section is loosely based on the Vancouver Skytrain. For other components of my rail bridge, look up my profile. There's about 20 different parts I made for this setup.
This bridge section is 450 mm long, and was printed with a large delta printer. This version has no screw holes, so you can scale it on the Z-axis to whatever length you need.
I've also included sketchup files in case you want to modify. Please post makes if you make one.
The author hasn't provided the model origin yet.