I had a rather mad idea. I could make all the formworks for the viaduct and bridge from stuff, and then fill it with a casting plaster, effectively the same mass concrete method pioneered by Concrete Bob. Then I realised that it would weigh far too much, sanity clicked in and the decision was made to go for a foamboard structure clad in scribed plasticard. Why foamboard? It is light, strong and by a stroke of luck, free. Anyone dismantling it in the future could have many happy hours working out what it was advertising before I rescued it and put it to a more useful purpose.

Anyway, a few pics of a start being made. Bits everywhere, typical Builders work in progress. Having the boards on castors and easily moved about helps a lot.

Rivets on the underside of a bridge. Hmm….

While its out like that I really must clean the windows.