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.

June 9, 2017 to June 15, 2017
Bergen, Norway

The International Tunneling and Underground Space Association (ITA) is the leading international organization promoting the use of tunnels and underground space through knowledge sharing and application of technology.

You are here


September 15, 2001
World Tunnelling, September 2001, Volume 14, No. 7

CTRL enters second phase

June 01, 2001
Civil Engineering, June 2001, Volume 71, Numer 6

Pushing Back

Cameron Run flows into the Potomac River in Alexandria, Virginia, just south of Washington, D.C. This unremarkable urban stream primarily carries runoff and serves as a flood control channel.

March 01, 1999

Through frozen ground

In 2002 the Massachusetts BAy Transportation Authority (MBTA) will open a transit corridor less than 3 m (10 ft) below a 100-year-old building in downtown Boston.

March 01, 1999
Geotechnical Fabrics Report, March 1999

Going underground: waterproofing on Boston's CA/T project

With almost half of the massive Central Artery Tunnel Project being constructed in tunnels, engineers rely on innovative waterproofing solutions to ensure that Boston traffic is kept safe and dry.

June 01, 1997

Pittsburg Berry Street Rebuild

The Port Authority of Allegheny County, Pittsburg, Pennsylvania, is very pleased with its Berry Street Tunnel reconstruction results. The authority benefited from the contractors original low bid and its post-bid tunnel-design change.

February 01, 1996

London Bridge Station

Station work at London Bridge by Costain/Taylor Woodrow involves excavation and construction of the new JLE station complex as well as a new south bound platform tunnel to ease congestion on the existing Northern Line station.

June 01, 1992

Heathrow Express NATM Trial Tunnel

At a total cost of about £ 235 million, London is to have a new high speed rail link between Paddington terminal in central London and the capital's principal international airport at Heathrow. Under the scheme, dedicated rolling stock will provide a 16-minute non-stop rail service between central London and the passenger terminals at Heathrow, cutting the present journey time by public transport by nearly three quarters.

May 01, 1992
World Tunnelling, May 1992, Volume 5, No. 4

Dallas Area Rapid Transit

Dallas is at last seeing real action on its much debated light rail public transport system. Ground breaking in early March '92 on the first two civil contracts sets in motion construction of the 20-mile starter system of the eventual 67-mile DART LRT.

May 01, 1991

NATM by any other name

The use of the NATM system for building tunnels in North America has not exactly caught on since its introduction in 1983. The first NATM projects in America are the Washington Metro (WMATA) Red Line and the Port Authority railway tunnel at Mt Lebanon near Pittsburgh, Pennsylvania. Both of these tunnels were built by the Austrian contractor, Ilbau.

December 01, 1988
International Mining, December 1988

NATM: a significant support approach

The recent Austrian Tunnelling Seminar, held at Nottingham University in the United Kingdom, concentrated on modes of tunnel failure, their monitoring and the various packages available for providing long term support, all of which involve rock bolting and shotcreting in some form or other.