In the 2005 Structural Awards, run by the Institute of Structural Engineers, a steel project was a joint winner in each of the two main categories. WilkinsonEyre Architects and engineer Arup won a Structural Achievement Award for Gatwick airbridge, linking North Terminal to a sixth pier. The 198m-long structure spans a taxiway with a clearance of 22m to allow Boeing 747-400s below. A Structural Special Award went to Greenside Place Bridge in Edinburgh, by Broadway Malyan and engineer Buro Happold. Curved in plan and helical in form, this pedestrian bridge spans 48m between St James shopping centre and the adjacent car park.