Shannon & Wilson is home to renowned experts in the fields of geotechnical engineering and environmental science. They are published in a variety of text books, journals, and trade magazines around the world. Check this page regularly to keep abreast of the latest technologies in the earth sciences.

Searching for Cavities on Beacon Hill, North American Tunneling Journal

Robert ‘Red’ Robinson, Sr Vice President, and Rob Clark, Associate, of Shannon &  Wilson; Richard Sage, Director of Construction Management for Sound Transit; and Edward Cording, Professor Emeritus of the University of Illinois, discuss the remediation of tunneling-induced voids following the completion of the Beacon Hill Light Rail Project in Seattle, Washington.

Seattle Renews Its Large Diameter Legacy, North American Tunneling Journal

With a new record-breaking large-diameter tunnel currently planned in Seattle, Robert A Robinson, Senior Vice President of Shannon & Wilson, and Harvey W Parker, President of Harvey Parker & Associates, take a look back at the construction of Seattle’s existing record-breaking large diameter tunnel, the triple-deck Mt Baker Ridge Tunnel.

Construction Grouting of the Baumgartner Tunnel, 2011 Rapid Excavation and Tunneling Conference

Tom Abkemeier, Senior Associate, and Chris Groves, Senior Vice President, discuss challenges during construction of a 4-mile-long, 12.5-foot-diameter tunnel under the Meramec River.  A previously unidentified water-bearing seam encountered during tunneling requires aggressive measures to keep construction safe and on schedule.

Geotechnical Baseline for the SR-99 Bored Design/Build Alaskan Way Tunnel, 2011 Rapid Excavation and Tunneling Conference

The proposed SR 99 bored tunnel will be the largest mechanically bored tunneling in the world. It is a very challenging project that has required the application of state-of-the-art tunneling and contracting practices. The project is being advanced using a design-build contracting approach that utilizes various aspects of risk sharing. An extensive geotechnical investigation was conducted along the alignment of the tunnel, which passes directly below the central business district of Seattle, Washington.