The sun was shining and time was on my side, so what better to do than paint some of the structures I had previously built.
This is a 10ft stock underpass? I saw this structure on the Tenterfield to Wallangarra line the other week when we went for a drive. I took a lot of pictures and some measurements to knock this one up from styrene, it's not too hard if you take lots of photos and have some timber measurements for reference.

The view of the other wing wall. You will notice that the one on the left has rail where the one on the right has timber poles. It seems that the bridge I saw may have had the timber poles fail and the rail was a repair job. The other difference on the real structure was that the timber was full lengths on the side with the poles, the side with the rail was reconstructured from used sleepers. I was a bit too lazy to copy this.




































The above schematic shows the wiring diagram to the frogs when the point is thrown. (click on the picture to read the text) I realise that I have coloured the bottom throw rail black when it should be red, only the frog changes colour/polarity, see next diagram.
The point thrown in the opposite direction. Note the polarity change on the frog.
