The paper summarizes the technical and operating characteristics of seventeen trenchless construction methods and their subclasses. Information, compiled from industry surveys, expert opinions, analysis of over 40 case histories, and an extensive review of the technical literature, is divided into three categories: general information (summary of method; applications and cost range); performance parameters (installation parameters; accuracy and limitations); and constructability parameters (staging areas; potential for ground movement; short/long-term effects). The information presented can be used by pipeline designers and municipal engineers to perform preliminary screening of potential no-dig construction methods as well as to support the development of better estimating budget rules and project management practices. For researchers, the data can be used to support a "Method Database" for an automated decision support system for evaluation of competing underground construction methods. Copyright ASCE 2004.