Tunnelling projects – Major losses 1994–2007
Date of loss Project Cause Loss
(US$ m)
1994 Great Belt Tunnel, Fünen-Seeland, Denmark Fire 33
1994 Heathrow Express Link, London, UK Collapse 141
1994 Underground, Munich-Trudering, Germany Collapse 4
1994 Underground, Taipei, Taiwan Collapse 12
1995 Underground, Los Angeles, USA Collapse 9
1995 Underground, Taipei, Taiwan Collapse 29
1999 Sewage tunnel, Hull, UK Collapse 55
1999 TAV, Bologna-Florence, Italy Collapse 9
1999 Bolu Tunnel, Gümüsova–Gerede, Turkey Earthquake 115
2000 Underground Taegu, South Korea Collapse 24
2000 TAV, Bologna–Florence, Italy Collapse 12
2001 Underground, Tseung-Kwan-O-Line, Hong Kong Typhoon
2002 High-speed railway, Taiwan Collapse 30
2002 Socatop Tunnel, Paris, France Fire 8
2003 Underground, Pearl Line, Shanghai, PR China Collapse 80
2004 Underground, Circle Line, Singapore Collapse
2005 Underground, Orange Line, Kaohsiung, Taiwan Collapse
2005 Underground, Barcelona, Spain Collapse
2005 Underground, Lausanne, Switzerland Collapse
2005 Motorway tunnel, Lane Cove, Sydney, Australia Collapse
2007 Underground, São Paulo, Brazil Collapse
Total     > 600

Source: Knowledge Management Topic Network Construction