Selected papers from the 2016 International Workshop on Resiliency of Urban Tunnels, held in Reston, Virginia, September 1, 2016. Sponsored by the Infrastructure Resilience Division of ASCE. Resilience Engineering for Urban Tunnels addresses tunnels as a part of the complex urban infrastructure system including transportation systems, such as metro transit networks, and provides a basis for the development of a dynamic risk control and resilient design approach to urban tunnels. Topics in this, the second Infrastructure Resilience Publication (IRP), include smart sensing, uncertainty modeling in construction, integrated robust design through modularity and adaptability, modeling with a component scale and a systems scale perspective, resilience-informed decision making, and multisector interdependencies. Also included is a report on the discussions held during the workshop and the conclusions drawn for future research recommendations. IRP 2 provides state-of-the-art information to researchers, practitioners, and students interested in the resilience of urban tunnels and infrastructure.