As part of an upgrade that is aimed at improving safety, and homologating the circuit for motorbikes, a major revamp is underway. The construction work, which began on November 15, is set to cost the venue around 80 million euro, but should help secure its long term future for top categories including F1. From next year, Spa wants to hold a series of major events, including the Belgian Grand Prix, the Spa 24 Hours, a round of the WEC and a 24-hour motorbike race as part of the FIM Endurance World Championship on June 22. For that latter event, the track needed to be upgraded to earn an FIM licence, and that has meant an overhaul of a number of run-off areas. Some asphalt run-off …