抄録
Lifelines such as electric power and communication systems, gas supply system, water and wastewater systems, highways and railways are important utilities and transportation systems for recent urban cities. The focus of this report is on the past earthquake damage to lifeline, the characteristics of lifeline damage and the issues associated with the disaster mitigation. Outlines of the active fault-induced damage, seismic ground motion, damage to infrastructures were described. Although the steady progress has been made to develop the disaster mitigation program for lifelines, new strategies for coping with catastrophic losses should be developed. The necessity of lifeline risk management is also mentioned in this report.