Infrastructure is something that we use every day, like roads, bridges, and tunnels, but probably never think too much about. However, in the United States, many parts of the country’s infrastructure are old, falling apart, and desperately need repair and upgrading. Tunnels especially are vital to transportation, and extremely dangerous when they collapse. This book explores eight tunnels of different types that are lifelines for transportation in the US, but are now at risk. Whether its Boston’s Big Dig, the twin railroad tunnels under the Hudson River, California’s Hetch Hetchey water system, or a rail tunnel in Baltimore that’s more than 100 years old, these tunnels are very important to the entire country. Without emergency repairs and expansion, these tunnels could fail, with catastrophic results.

Describing and detailing the boring of major railroad tunnels throughout Canada, the United States, and Mexico, this book covers the period from the creation of Virginia's Blue Ridge Tunnel in the 1850s to Copper Canyon's Continental and El Descanso tunnels in the early 1960s. Other notable tunnels featured here include Massachusetts' notoriously expensive and slow-progressing Hoosac Tunnel; Colorado's rail and water Moffat Tunnel; Montana's Flathead Tunnel; and several major tunnels along the Canadian Pacific's main line. In addition to providing details on the tunnels, the author considers the reasons they were created, their engineers, and their use. The book includes more than 50 period and contemporary photos. A glossary explains concepts related to railroad construction and maintenance.

This publication includes papers from the North American Tunneling 2004 conference, sponsored by the American Underground Construction Association. The theme of the conference is "Underground Construction - the Sensible Solution to Urban Problems" to reflect the increasing importance of locating urban facilities in the United States underground for enhanced security, to build critical infrastructure where it is needed and to improve the function of urban areas. The papers are grouped in four major themes: - Management of Underground Projects - Public Policy and Underground Projects - Advances in Technology - Case Studies: Trials, Tribulation and Triumphs in Tunneling This work should benefit everyone involved in any aspect of infrastructure, tunneling and underground construction.

IRP 2 contains selected papers from the 2016 International Workshop on Resiliency of Urban Tunnels, which address tunnels as a part of the complex urban infrastructure system and provide a basis for the development of a dynamic risk control and resilient design approach to urban tunnels.

Your timely source for more cost-effective and less disruptive solutions to your underground infrastructure needs. The North American Tunneling Conference is the premier biennial tunneling event for North America, bringing together the brightest, most resourceful, and innovative minds in the tunneling industry. It underscores the important role that the industry plays in the development of underground spaces, transportation and conveyance systems, and other forms of sustainable underground infrastructure. With every conference, the number of attendees and breadth of topics grow. The authors—experts and leaders in the industry—share the latest case histories, expertise, lessons learned, and real-world applications from around the globe. Crafted from a collection of 126 papers presented at the conference, this book takes you deep inside the projects. It includes challenging design issues, fresh approaches on performance, future projects, and industry trends as well as ground movement and support, structure analysis, risk and cost management, rock tunnels, caverns and shafts, TBM technology, and water and wastewater conveyance.

Traces the history of tunnel-building in America, from the earliest days of the Schuylkill Navigation Tunnel to the complex technology of today's immersed-tube tunnels.