On April 20, 2013, a 6.6 magnitude earthquake with an epicenter in Lushan struck the southern portion of the Longmenshan mountain range southwest of Chengdu, Sichuan province, and caused damage to structures and lifelines. The worst affected areas included the cities of Lushan, Baoxing, Tianquan, Sheungshizhen, and Taipingzhen, with landslides and rockslides causing major road closures and hampering emergency response efforts. This TCLEE Monograph discusses the following lifeline systems: electric power; water distribution; wastewater treatment; roads and bridges, telecommunications; emergency response methods; and essential and regular building stock. General seismology of the event and geotechnical features of the area are included.