Innovative thinking in engineering Ling-tie was designed for the crossing of Yong river in Nanning,Guangxi China. A pair of inclined steel arch formed a saddle support the curved 300m steel box girder with 6-lanes traffic. The approaches are the post-tensioned RC box girders on RC piers. Both sound structural features as well as the aesthetics uniqueness made the bridge a landmark of the city.Innovative thinking in engineering • Ling-tie was designed for the crossing of Yong river in Nanning, Guangxi China. • A pair of inclined steel arch formed a saddle support the curved 300m steel box girder with 6-lanes traffic. • The approaches are the post-tensioned RC box girders on RC piers. • Both sound structural features as well as the aesthetics uniqueness made the bridge a landmark of the city