Model Bridges for the Garden Railway

Photo 3 Grockle Creek Pony Truss copy
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Plate Girder  ELM TREE RED3

Under Beam Bridges (UB)

This is one of the simplest bridge structures. Over short spans the Under Beam Bridge is capable of taking a substantial load and offers a width which is quite generous. Similar designs are often found on narrow gauge railways. It is therefore an ideal and economic choice for the small garden railway.

The strength of the Under Beam Bridge lies in the two main inverted T section beams and we suggest that it is only suitable for spans up to 1 metre.

Under Beam Bridges are available in three standard lengths of 500mm, 750mm and 1000mm. However we can supply these quite easily to your own lengths and widths to suit your own railway.

CONSTRUCTION
A range of aluminium cross sections are used with joints connected by 2.5mm stainless steel and aluminium blind rivets.

  • Main Beams: 25mm x 25mm inverted 'T' section
  • Cross Beams: 16mm x 16mm channel
  • Longitudinal Track Supports: 25mm x 3mm bar
  • Parapet Posts: 9mm x 9mm angle
    • DIMENSIONS

      UB50  

      • Length: 500mm
      • External width: 220mm
      • Internal width: 190mm
      • Overall height: 100mm
      • Spacing between posts:120mm
      • Parapet rails: 2.0mm dia. galvanised wire  
        • PRICE: £75.00 plus p+p

          UB75

          • Length: 750mm
          • External width: 220mm
          • Internal width: 190mm
          • Overall height: 100mm
          • Spacing between posts:120mm
          • Parapet rails: 2.0mm dia. stainless steel wire
            • PRICE: £104.00 plus p+p

              UB100

              • Length: 1000mm
              • External width: 220mm
              • Internal width: 190mm
              • Overall height: 100mm
              • Spacing between posts:120mm
              • Parapet rails: 2.0mm dia. stainless steel wire
                • PRICE: £126.00 plus p+p

DSCF0319
UB76
UB100

As with all our aluminium bridges the Under Beam Bridge is individually made by hand. It is supplied in its bare metal state and can be left to weather naturally or you can prime and paint it. Note we don't supply it highly polished! It bears minor scratches and scuffs from the process of construction which certainly do not detract from the appearance of the bridge.

Longitudinal plates are placed at a suitable distance to support 32mm and 45mm gauge track. The bridge does not include any decking but you could easily add your own wooden planking or a zinc diamond pattern grid. The length of the bridge allows it to be supported by the end 10-20mm of the beams.

The galvanised wire rails are close to scale and are loosely threaded through the parapet posts.

The bridge is supplied fully constructed as shown in the photos.

We would be happy to receive enquiries for custom made bridges of this design which could be supplied within a three week delivery period. If considering the maximum length of 1020mm it should be borne in mind that such span would be best suited to lighter locos.
The width can be varied to suit the smaller Mamod size rolling stock or increased to provide a double track.

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