It's an asymmetric bobtail swing bridge, spanning across the Manchester Ship Canal. It's 83m long overall, with a 63m main span. To the north, it provides access to the new Media City development in Salford, the new home to several departments of the BBC. On the south bank, it currently connects to the Imperial War Museum North, but will eventually link in to a new ITV studio development.
previously likened to a giant skeletal hand. I think perhaps the design visualisations were a little unflattering, as now that I've seen the (nearly) finished structure, it is a much more attractive creature.
The odd assemblage of masts arises from the formalism of the geometry. The cables establish a harp arrangement in elevation (i.e. they are parallel when viewed from that angle), and are tangential in plan to the curved edge of the deck. This creates a geometry where the cables must be supported at eight separate positions in space, rather than from a single mast.