Comprising of 7 sections each 36ft long made from steel and carbon fibre the structure is fed out by activation of a hydraulic toggle system. As the sections extend at an angle of 9 degrees to the horizontal an arched bridge is created, as can be seen in the photograph above.

As the bridge reaches full extension, stage B appears from its hiding place among the crowd. The stage is raised 15ft by a hydraulic scissors lift operated by four hydraulic cylinders, shown in the photograph to the left. Allan Lee, DCA Director and Sales Engineer, says: "To achieve precise synchronisation of four cylinders is quite tricky but it was achieved by roping them together and using a rotary flow divider."