| | | The bridge was originally constructed in 1963, and has been expanded since then. The purpose of the bridge is to enable pilgrims to throw stones at the three jamrah pillars from either the ground or the bridge. The pillars extend up through three openings in the bridge. At certain times, over a million people may gather in the area of the bridge. Stones thrown from the upper level fall through to the ground below. Until 2006 the bridge had a single tier (ie. a ground level with one bridge level above). Following the January 2006 Hajj, construction began on a multi-level bridge. For this huge project, a set of 16 Cantilever Lifting devices, each with a capacity of 70t, has been designed, supplied and commissioned to lift and put into place the bridge elements. | | |