Balfour Beatty is to start on site next week on a £700,000 steel and aluminium sculpture with 12 fins called the Mersey Wave, to be constructed in south Liverpool. It will be lit by two beams that shine on to an acrylic diffuser. The structure, which is 30 m high and 72 m long, has been designed by Anglo-Czech lighting artist Peter Fink and is Liverpool's largest piece of commissioned art. The sculpture, commissioned by the Liverpool Land Development Company, has been assembled off-site. It will be opened on 15 December. The structural engineer was Techniker; the fins were constructed by Alan Dawson Associates.