Next I needed some supporting columns that were cut from the embossed sheet. With care the brick courses line up which does make a difference if you look closely.
I built four of these as I will need two for the other parapet.
I have added internal bracing as the embossed sheet is not that thick and does bow.
The card substructure was encased in embossed sheet.
Where the bridge deck and girders sit on the parapet i added what is supposed to be a stone or concrete bed using plain plastic card. Once painted it will stand out from the brick. I have leant one of the supporting columns roughly where it will finally be placed.
Building this first parapet has taken some time as I have had to work out how it all goes together and the dimensions of the various parts. The second parapet should take a lot less time - famous last words!