Abstract: A composite structural member with a longitudinally extending structural haunch. The composite structural member comprises a plurality of longitudinally extending girders with molded sections disposed thereon. The molded section comprises a molded deck portion having a plurality of longitudinally extending structural haunches extending downwardly therefrom. Each haunch is disposed on a corresponding girder. The haunches are molded around shear connectors attached to the girders. The resulting structure has greater strength properties than a corresponding prior art structure having no haunch, the same deck thickness and substantially the same overall height and girder weight.