N Scale Stone Arch Viaduct Bridge – 2 Track 4 Piece Modular Model Railroad Bridge

N Scale Stone Arch Viaduct Bridge – Double Track Modular Design Designed by Archimage 3D Studios This is a double-track N scale stone arch viaduct bridge designed for model railroad layouts. The bridge features detailed stone masonry and a modular structure optimized for reliable FDM printing. This model includes 3 STL files. To complete the bridge you will print 4 total parts. Print quantities: • Bridge Center Section – print 1 • Bridge Top Section – print 1 • Bridge Side Section – print 2 The two side sections mirror each other and form the outer arches of the viaduct. All four parts align and glue together to create the finished bridge. The model prints in four sections that align and glue together to form a strong and detailed viaduct. This approach allows the bridge to print easily on most consumer 3D printers while maintaining realistic proportions and surface detail. The stonework was designed specifically for N scale printing resolution, with slightly raised stones and recessed mortar lines so the masonry pattern remains visible even when printed with a standard 0.4 mm nozzle. This bridge works well for: • valley crossings • elevated mainlines • mountain scenery • stone infrastructure scenes • European or North American layouts Features • Double track width for two mainline tracks • Modular 4-piece design for easier printing • Hidden wire channels for lighting or signal wiring • Detailed stone masonry texture optimized for N scale • Designed for FDM printing with a 0.4 mm nozzle • Prints without supports Assembly The bridge prints as four sections which are joined together after printing. Recommended adhesives: • CA glue (gel super glue) After assembly the model can be primed, painted, and weathered for realistic stone effects. Recommended Print Settings Layer height: 0.10 – 0.20 mm Nozzle: 0.4 mm Supports: Not required Infill: 10–15% Material: PLA recommended Optional Color Change for Stone Highlight For extra visual depth you can add a filament color change in your slicer to highlight the stone texture as seen in picture. This technique helps bring out the stone pattern and mortar joints. Scale Designed for N Scale (1:160). The modular design also allows for easy printing and potential future expansion of bridge systems and layout structures. License This model is provided for personal use only. If you print and share this model please credit: Archimage 3D Studios More Models Coming Additional designs from Archimage 3D Studios will include: • tunnel portals • retaining walls • bridge systems • modular scenery components Follow for future releases. This bridge is a refined revision of an earlier Archimage bridge design from a few years ago. Share Your Build If you print this bridge please post a photo in the Makes section — I would love to see how it looks on your layout.