Proceedings of sessions of Geo-Congress 98, held in Boston, Massachusetts, October 18-21, 1998. Sponsored by the Geo-Institute of ASCE.

This Geotechnical Special Publication contains three papers on tunnel jacking, a method to construct large, shallow underground openings in areas where disruption to surface use and activities cannot be tolerated. The technique of tunnel jacking is not new, but in recent years it has been used to construct openings primarily in Europe and Asia, often under railroad lines and highways. Although tunnel jacking has seen limited use in the United States, a state-of-the-art tunnel jacking project currently is underway as part of the Central Artery/Tunnel Project in Boston, Massachusetts.

GSP 87 has been prepared by experienced designers of tunnel jacking projects to provide an introduction to the design, construction, and instrumentation of large jacked tunnels.