I'm in need of a tunnel for my railway to disappear into. It is going to be a 1930's era quarry, and I'm thinking of a bridge to carry the access road to the quarry over the railway, which would be in a cutting. I'm trying to find some photos of either small tunnels or bridges for such purpose, being 1930's based obviously lorries would have been quite small, and I'm guessing that being on an industrial line in a quarry it would not be to the same standard as other structures on the main rail network. It is for a standard gauge track, had it been for narrow gauge a piece of concrete pipe buried in the ground would have sufficed
Many thanks