Square Girder Bridge Centre Support – OO Gauge / 1:76 Scale

Complete your heavy railway infrastructure with this highly detailed Square Girder Bridge Centre Support. Designed specifically for OO Gauge (1:76 scale), this model represents the standard riveted steelwork used extensively for rail-over-road bridges and industrial viaducts throughout the UK.

This "Square" profile support is designed for modellers who require a more industrial, utilitarian aesthetic for their bridge spans. The model features meticulous rivet placement along the top and bottom flanges, as well as the vertical strengthening webs. Optimized for high-resolution resin printing, the fine-scale rivet heads remain perfectly defined, providing an authentic "heavy metal" appearance that is ideal for weathering with washes and powders.

Key features:

• Prototypical Industrial Design: Replicates the heavy-duty riveted plate construction found in Victorian and modern-era railway engineering.
• High-Fidelity Rivet Detail: Hundreds of individually modelled rivet heads on all visible faces for ultimate realism.
• Scale Accuracy: Precisely scaled to 1:76 (OO Gauge) with a total width of 144.6mm, compatible with standard double-track bridge clearances.
• Pre-Supported Version Included: Includes a professionally supported STL, optimized to protect the rivet detail during the printing process.
• Versatile Application: Ideal as a central support for long spans, a decorative bridge façade, or a structural element for coal staithes and industrial loading docks.

Model dimensions:

• Width: 144.6mm
• Height: 14.4mm
• Depth: 7.5mm

What’s Included in the Download:

This pack contains 2 high-resolution STL files:

1. Girder Bridge Centre Support - Square V1.0.stl (Unsupported)
2. Girder Bridge Centre Support - Square V1.0_support.stl (Pre-supported)

Printing & Post-Processing:

• Tested Settings: Successfully test-printed on an ELEGOO Saturn 4 Ultra 16K using a 0.03mm layer height and an exposure time of 1.8s.
• Workflow: For the best results, use the V1.0_support.stl file. It has been oriented to ensure the horizontal rivet lines on the flanges print without distortion.
• Finishing: I recommend a base coat of "Lead Grey" or "Oxide Red". The flat surfaces and rivet rows respond exceptionally well to a black pin-wash, which will accentuate the structural depth of the girder.

Show Off Your Layout! I would love to see how this girder support looks on your layout! If you print and paint this model, please consider uploading a 'Make' and sharing your photos here.

I used my ELEGOO Resin 3D Printer, Saturn 4 Ultra 16K and SUNLU ABS Like Resin for 3D Printer. I use solid grey resin, 0.03mm layer height and 1.8 second exposure time.

You'll need to use your setting based on your printer and resin.