February 21, 2017 to February 22, 2017
Dubai, UAE

The 4th Arabian Tunnelling Conference (ATC 2017), held in conjunction with the 20th Gulf Engineering Forum (GEF 2017), takes place on the 21-22 February 2017 at the Ritz Carlton in Dubai International Financial Center, United Arab Emirates.The ATC is the number one networking hub of Tunnell

April 18, 2017 to April 20, 2017
Innsbruck, Austria

EURO:TUN 2017 is the fourth conference of a series of successful ECCOMAS Thematic Conferences on Computational Methods in Tunneling, started in 2007 in Vienna and continued in 2009 and 2013 in Bochum.

June 4, 2017 to June 7, 2017
San Diego, USA

Every two years, industry leaders and practitioners from around the world gather at the Rapid Excavation and Tunneling Conference (RETC), the authoritative program for the tunneling profession, to learn about the most recent advances and breakthroughs in this unique field. Dr.

You are here


April 01, 2008

Dr. G. Sauer to present the William Barclay Parsons Technical Lecture

The ASCE Metroplitan section - Geotechnical group Invited Dr. G. Sauer to present the 2008 William Barclay Parsons Technical Lecture, the lecture will be held at the City University of New York Graduate Center-Recital Hall at 365 Fifth Ave, New York, NY on Thursday April 17, 2008. The lecture topic will be "Tunneling and Beyond".

November 08, 2007

Devil’s Slide Tunnel Excavation Begins

Excavation is underway on what will be California’s longest highway tunnel. The Devil’s Slide Tunnel will bypass a section of Hwy 1 south of San Francisco plagued by landslides and grade subsistence that have closed the road for months at a time.

In September, Caltrans officials, local politicians and the public gathered at the construction site to celebrate this major milestone that has been more than 40 years in the making.

September 22, 2006

DSC, as Part of the NTP JV, Selected to Provide the SEM Design for University Link in Seattle, WA

The North Link Transit Partners Joint Venture (NTP JV) was selected to provide final design services for the Sound Transit's University Link project in Seattle, WA.  The JV is comprised of Jacobs Associates, HNTB Corporation, and Earth Tech, Inc. 

August 18, 2006

SEM Mining and TBM Tunneling progress at Sound Transit's Beacon Hill Station

Both shafts, the Main Shaft and the Ancillary Shaft have been constructed, and the Concourse Cross Adits North and South have been excavated. At 45ft width, these are the largest tunnels excavated in soft ground in the United States to date using the Sequential Excavation Method (SEM). To minimize the risk of ground loss in the extremely complex geology, the dual side wall drift excavation method was used. In addition, the ground was improvement by dewatering and jet grouting and special pre-support measures such as pipe umbrellas, spiling and grouting are implemented.

July 31, 2006

ASCE Panel Recommends Tunneling through Tysons Corner

Traffic Situation & Metro Extension

'The Washington DC region is the third most traffic congested area in the nation and the problem is only worsening due to urban sprawling occurring in Northern Virginia.  Currently, the Washington DC METRO system only goes as far west as the Vienna stop, which leaves a gaping hole between western communities such as Tysons Corner, Reston, the Dulles Airport, and Ashburn. 

July 15, 2006

URS/Dr. Sauer Corporation JV Awarded the Construction Inspection Services Contract for Devil’s Slide Tunnel

Services Provided by URS/DSC

The URS / Dr. G. Sauer Corporation JV was awarded the Caltrans on-call contract for providing Construction Inspection Services for the Devil’s Slide Tunnel project in Pacifica, California.  The URS/DSC JV will provide SEM/NATM engineers and field inspectors, engineering geologists, civil, mechanical and electrical inspection personnel and other technical support services as needed. URS/DSC will be working as an integrated Team with the Caltrans Construction Management Team in their field office, which is located in Pacifica, just South of San Francisco.  

June 02, 2006

NAT 2006 in Chicago

Chicago hosts this years' North American Tunneling Conference; please follow this link to the home page of the Society for Mining, Metallurgy and  Exploration's homepage.

November 01, 2005

Transportation & Mobility Conference

Third Annual Houston Transportation and Mobility Conference on December 1st and 2nd, 2005.

The Transportation and Mobility Conference is a communication forum designed to assist individuals and institutions better understand the many transportation and mobility challenges encountered in the Houston Metropolitan area.
August 19, 2005

Boston's Silverline Phase II Opens!

MBTA of Boston, MA opens first new transit tunnel line since 1918.  The opening marked the completion of the Silverline Phase II segment of the Bus Rapid Transit system in the downtown business district.  The new tunnel route is constructed beneath the historic Russia Wharf waterfront complex and crosses the Fort Point channel to the Court House Station.  To complete this challenging engineering project several innovative methods of tunnel construction were used, including NATM and immersed tube tunnels.

August 17, 2005

Urban Traffic Arterials – True Cost?

Traffic Planners in urban areas have three options for establishing new arteries or expanding existing lines: to locate them at grade, to elevate them or to put them underground.  Unfortunately, capital costs are usually the governing factor used for deciding which option to use.  As environmental, social and real estate issues are increasingly getting into the equation as do maintenance and operational costs, planners may look underground for the solution.