I was waiting for my train home from work the other day and saw another part of normal railway “furniture” as people like to call it.
You don’t often see this modelled but earth bonding is an essential part of the railway. This bonding ensures the girder bridge and the rails are at the same potential- critical with any line, but particularly electrified lines, to prevent electric shocks.
It occurred to me that use of earth bonding would make a really good camouflage for the power feed for a model railway. You could, in this case, even run the cables down the bridge parapet to under the baseboard.