It is lighting up time for Britain's tallest piece of public art. From the end of this month travellers passing junction 11 of the M62 at night will be able to appreciate the full power of the 28m high Encounter sculpture when powerful ground lights are switched on. Costing £250,000, the sculpture marks the entrance to the Birchwood business park and doubles as a mobile phone mast. Consultant Gifford worked with sculptor Stephen Broadbent to make sure the design would withstand wind loads and act as a communications mast. The curved, high tensile steel column is clad in GRP on wooden formers behind which is concealed Hutchison 3G telecommunications equipment.