Bridges for modellers - by L.V.Wood
Great source for reference for scratchbuilding all designs of steel girder bridges, brick, concrete, box girder, warren pattern, 'A'type etc, overbridges, underbridges, & intersection bridges.
Plenty of photo's of all types of rail bridges in the UK, as well as diagrams & typical measurements & dimensions, also showing the various underside detail structure, cross girder & longditudal , jack arches & a comprehensive glossary of bridge components & terminology.
A small section featureing railway tunnel portals also.
Was available in hardback, went out of print for a few years, but now recently back in print published in softback.