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Caterpillar to Hold Live Demo of Tunnelling Excavator

Caterpillar to Hold Live Demo of Tunnelling ExcavatorAfter the high-level attention the 325CR tunnelling excavator got at the Bauma fair in Munich, Cat will run a live tunnelling construction ... More Information

Nusantara Tunnel Project in Indonesia Needs Experts

Nusantara Tunnel Project in Indonesia Needs ExpertsPT Nusantara Tunnel Indonesia is currently preparing to construct a 33 km subsea twin tunnel crossing the Sunda Strait in Indonesia. The tunnel ... More Information

Gjerstad for toughness, durability, and a long working life

Gjerstad for toughness, durability, and a long working lifeMost people in the tunnelling industry associate the name Gjerstad with side-tipping buckets, an item that they have produced for nearly 40 ... More Information

At the Heart of the Lötschberg

At the Heart of the LötschbergTwenty minutes are necessary to cover the 7 km southward between the Mitholz entrance of the Lötschberg base tunnel and the worksite to Ferden. Consortium Satco, a JV ... More Information

Black Diamond Cutters Take on the World

Black Diamond Cutters Take on the WorldBlack Diamond Cutters, manufactured in the New South Wales town of Artarmon, Australia, have been a growing influence on Asia Pacific TBM projects over the ... More Information

Squeezing Ground Obliges to Innovate at Gotthard Base Tunnel

Squeezing Ground Obliges to Innovate at Gotthard Base TunnelThe 800 m Sedrun shaft enables to descend to the heart of the Gotthard base tunnel in 67 seconds, at a speed of 12 m/sec. The elevator has ... More Information

Harvey Parker - ITA President with a Mission

Harvey Parker - ITA President with a MissionDr Harvey W. Parker, PE, a tunnel and geotechnical engineer in private practice, has been elected to a three-year term as President of the International ... More Information

Spain Inaugurates First Phase of Test and R&D Tunnel

Spain Inaugurates First Phase of Test and R&D TunnelVicente Alvarez Areces, the president of Asturias in northern Spain, inaugurated on 25th May a EUR1.3 million high temperature fan test ... More Information

Goodbye WT, hello TTC!

Goodbye WT, hello TTC!April edition of World Tunnelling magazine was the last of the series, and the title has closed after some 150 issues. Launched in March, 1988, WT was well-received by both ... More Information

Sandvik Tamrock Wins Order for Tunnelling Jumbos - cn/61

Sandvik Tamrock Wins Order for Tunnelling Jumbos - cn/61Sandvik Tamrock has signed a supply contract with the Leighton-Kumagai JV to deliver five new Tamrock Axera tunnelling jumbos for Route 8 ... More Information

Four Cat 330C HD Special Application Excavators on the World's Longest Tunnelling Project

Four Cat 330C HD Special Application Excavators on the World's Longest Tunnelling ProjectThe Sedrun intermediate adit is one of the most spectacular sections of the 2 x 57 km Gotthard base tunnel in ... More Information

France and Italy Sign Lyon-Turin High Speed Rail Link Agreement

France and Italy Sign Lyon-Turin High Speed Rail Link AgreementFrance and Italy on 5th May signed an agreement on the financing of a EUR12 billion transalpine high speed rail link between the cities ... More Information

Austria and Italy Sign Agreement on Brenner Base Tunnel

Austria and Italy Sign Agreement on Brenner Base TunnelHubert Gorbach, the Austrian deputy chancellor and minister for transport, innovation and technology, and Pietro Lunardi, Italy's minister for ... More Information

EU Welcomes New TEN Guidelines

EU Welcomes New TEN GuidelinesThe European Parliament and Council adopted 30 priority projects of the Trans-European transport Network (TEN) on 21st April, a few days before the enlargement of the ... More Information

Lovat Launches TBM in Singapore

Lovat Launches TBM in SingaporeDowner Engineering has launched a refurbished 6.15 m-diameter Lovat TBM, model RMP242SE Series 18500, for the Singapore cable tunnel contract C302, section from West ... More Information

Annual Tunnel Test Results Disclosed as EU Adopts New Directive on Safety

Annual Tunnel Test Results Disclosed as EU Adopts New Directive on SafetyADAC, the German motoring club, has presented the results of its sixth annual tunnel test survey since 1999. This year's ... More Information

Three Killed, One Missing at Singapore Metro Collapse

Three Killed, One Missing at Singapore Metro CollapseThree workers, one Malaysian, one Chinese and one Singaporean, have been killed on 20th April at a metro collapse on a Circle Line worksite in ... More Information

Eurotunnel Sells TBM as French Board is Appointed

Eurotunnel Sells TBM as French Board is AppointedAn Howden TBM used to build the Channel tunnel that links the south of England and France has been sold by online auction site eBay. The 580t machine ... More Information

Safer European Road Tunnels

Safer European Road TunnelsThe European Parliament will vote on 20th April a second reading recommendation on proposals to improve the safety of tunnels on the trans-European road network. The ... More Information

Berlusconi Attends Groundbreaking Ceremony of Base Tunnel on Bologna-Florence Motorway - it/21

Berlusconi Attends Groundbreaking Ceremony of Base Tunnel on Bologna-Florence Motorway - it/21Italian Premier Silvio Berlusconi and minister for infrastructure and transport Pietro Lunardi ... More Information

Kranji Tunnel Breaks Through in Singapore

Kranji Tunnel Breaks Through in SingaporeA Herrenknecht 4.88 m-diameter EPB TBM, machine S-171, has successfully completed the 4.8 km south drive of the Kranji tunnel as part of Contract T-05 for ... More Information

Atlas Copco Launches Super-fast 30 kW Hydraulic Rock Drill COP 3038

Atlas Copco Launches Super-fast 30 kW Hydraulic Rock Drill COP 3038Atlas Copco took Bauma by storm with the unexpected announcement of the launch of its super-fast COP 3038 hydraulic rock drill. ... More Information

Bauma Mining Reflects Dynamism of Mining and Tunnelling Sectors

Bauma Mining Reflects Dynamism of Mining and Tunnelling SectorsFrom 29th March to 4th April 2004, 514 manufacturers out of a total of over 2,740 companies from 48 countries exhibited their mining ... More Information

Improved TBM Guidance System

Improved TBM Guidance Systemtacs gmbh, specialist manufacturer of TBM guidance systems, has extended its acs guidance system software to integrate the geological profile and plan view of the ... More Information

First TBM Being Assembled for SMART Scheme in KL

First TBM Being Assembled for SMART Scheme in KLThe Stormwater Management and Road Tunnel (SMART) project is a flood mitigation project being implemented by the government of Malaysia. During ... More Information

Hybrid from Swellex

Hybrid from SwellexThe newly- announced Swellex Hybrid rockbolt combines the pre-tensioning capabilities of Swellex with the grouting convenience of MAI SDA to provide immediate, long-term support. ... More Information

Hsuehshan Tunnel Breaks Through

Hsuehshan Tunnel Breaks ThroughTaiwan's minister of transportation and communications Lin Ling-san pushed a button to detonate explosives, clearing away the final 2.8m of rock of the westbound tube ... More Information

AUA Awards for 2004

AUA Awards for 2004The American Underground Construction Association will present the following awards during its NAT 2004 conference in Atlanta, GA from 17th to 21st April:Outstanding Individual in ... More Information

VMT Celebrates 10th Anniversary at Bauma

VMT Celebrates 10th Anniversary at BaumaWhile Bauma celebrates its 5th decade, VMT is entering its 2nd decade, having been formed in April, 1994. The company started in survey technology, supplying ... More Information

New TBM Record at Amsteg

New TBM Record at AmstegAt end February, 2004 about 25% of all the 153 km of shafts, cross passages and tunnels have already been excavated at the Alptransit Gotthard tunnel in Switzerland.At ... More Information

Guadarrama Tunnels are 50% Complete

Guadarrama Tunnels are 50% CompleteThe four TBMs have bored half of the twin tunnels under Sierra de Guadarrama on the high speed line from Madrid to Valladolid via Segovia. At end-January 2004, ... More Information

Technical Seminar on TBMs

Technical Seminar on TBMsIIR Spain organises a technical seminar on the necessary steps in the selection of a TBM to get a maximum return on investment, estimate with a 100% accuracy the project ... More Information

Hunter Personnel - More positions on tunnelbuilder.com

Hunter Personnel - More positions on tunnelbuilder.comJoining a growing list of human resources specialists to be seen on the tunnebuilder web-site, Hunter Personnel was established in 1976, and ... More Information

Häny Grouting Systems - Simple and Reliable

Häny Grouting Systems - Simple and ReliableSwiss-based Häny is one of the best-known names in grouting, having researched and developed equipment suited to many of the current techniques. The ... More Information

Stonehenge Tunnel Inquiry Opens amid Claims for Longer Project

Stonehenge Tunnel Inquiry Opens amid Claims for Longer ProjectA public inquiry has opened on 17th February into a plan to build a road tunnel under Stonehenge, the famous circle of megalithic ... More Information

Swiss Reject Second Gotthard Road Tunnel

Swiss Reject Second Gotthard Road TunnelSwiss voters rejected on 8th February a proposal to expand roads to ease Alpine bottlenecks, including the addition of a second tunnel under the Gotthard ... More Information

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Tunnelling News

Scarborough Subway Extension tunnelling progresses following maintenance stop

The remaining portion of the tunnel will be delivered by Scarborough Transit Connect, the development partner for the project's stations, rail and ... More Information

World's Deepest Underwater Tunnel to Have Cars Drive 16 Miles Under the Sea

Norway is building what is to become the longest and deepest road tunnel under the sea. The Rogfast project, measuring 26.7 kilometers (about 16.5 ... More Information

Tunnelling underway for National Grid’s 3.4km power tunnel in Snowdonia

The tunnel boring machine (TBM) Buddug has commenced excavation of National Grid’s 3.4km power tunnel in Wales’ Eryri National Park, otherwise known as Snowdonia. The tunnel is part of ... More Information

CPK signs contract for construction of HSR tunnel in Łódź

The contract for the construction of a 4.6 km long, 14-metre wide High-Speed Rail (HSR) tunnel will be carried out by construction company PORR. The project is valued at approximately PLN ... More Information

Underneath the busy Baltimore streets, the Howard Street Tunnel gets its makeover

A squad of construction workers descend daily under the streets of Baltimore. They labour deep down, in the semi-secret and highly restricted ... More Information

London Power Tunnels Milestone

We're thrilled to announce that our second 2.5km high-voltage circuit between Hurst and Crayford is now live. This £1 billion project is rewiring London, strengthening energy supply, and ... More Information

U.S. Tunneling Professionals Convene in Dallas at RETC 2025

The event drew approximately 1,400 people. Another highlight of the conference was the presentation of the now annual Underground Construction ... More Information

Construction of NY and NJ GatewayTunnel hits halfway mark

People are looking down at the ground from the Highline on Manhattan's West Side. Some parts of the new train tunnel structure ... More Information

Silicon Valley BART extension seeks new tunneling contractor

Silicon Valley BART extension seeks new tunneling contractor for construction. Maguire told reporters during a briefing Monday morning. He noted that VTA is trying to fill a $1.2 billion ... More Information

Tunneling In The Digital Age: Rethinking Subsurface Infrastructure

But successful construction is just the start of the journey. Underground infrastructure is a long-term investment—just look at the London Underground ... More Information

Sydney Moves Forward with Final Tunnelling for Harbour Project

Sydney prepares for the arrival of the largest TBMs in the Southern Hemisphere as the Western Harbour Tunnel project enters its final tunnelling ... More Information

Metrolinx seeks help to name 2 of its massive Ontario Line tunnel digging machines

Metrolinx is now accepting names for two of its giant tunnel boring machines (TBMs), which will be used for twin 16-metre-deep and six-kilometre-long ... More Information

Deutsche Bahn awards contract for Munich S-Bahn project

The contract involves structural works for the expansion, including the construction of tunnels and an underground station. The Tunnel Ostbahnhof JV, ... More Information

Excavation completed on Italian side of Brenner Base Tunnel

The tunnel boring machine (TBM) named “Flavia” successfully bored through the Alps beneath the Mules 2–3 section, reaching the Austrian border. More Information

Giant tunnel borer set for Shantou Bay project

A giant tunnel boring machine has been installed for tunnelling under Shantou Bay in Shantou, South China's Guangdong province. [Photo provided to ... More Information

€0.4bn road and tunnel project in Georgia

Work is proceeding on the Kvesheti-Kobi road and tunnel scheme in Georgia. The scheme is part of a larger project, being carried out with Chinese ... More Information

Lahore to transform with Rs49 billion tunnel boring project

Pakistan, April 27 -- The federal government has approved Lahore's Rs49 billion Tunnel Boring Project, marking a major development for the city... More Information

Construction at Cleveland Hopkins International Airport

The 2,100-foot-long tunnel connects the terminal to parking facilities and the tramway leading to the RTA public rail line. During the project, two of ... More Information

AFFHOLDER AND J.F. SHEA TEAM UP ON $700 MILLION CONTRACT

The tunneling subsidiary, Affholder LLC, will lead a joint venture with J.F. Shea Construction, Inc., to build the I-35 Capital Express Central ... More Information

Factory Testing Complete on DC Water's first tunnel boring machine for the Potomac River

Mary passed all the necessary requirements and is one of two TBM's on the project. The tunnel is part of DC Water's Clean Rivers Project, to ... More Information

Work on Chennai Metro tunnel racing to a finish

The machine Flamingo, which started boring in 2023 for the tunnel linking Light House with Thirumayilai, is expected to reach the other end in ... More Information

CPK awards contract to build high-speed rail tunnel in Lodz, Poland

The tunnel, to be constructed using a tunnel boring machine (TBM), will have a ... More Information

Inside HS2: Meet London's miners working on the Northolt tunnels

We are on a tunnel boring machine (TBM) inside High Speed Two's huge Northolt tunnels. These tunnel boring machines are part of a tunnelling ... More Information

Ontario Begins Construction Of Last Tunnel Segment Of The Eglinton Crosstown West Extension

The remaining eastern portion of tunnel construction (500-meter twin tunnels) will use the sequential excavation method, with daily progress of ... More Information

Norway is building the world's longest and deepest subsea road beneath its fjords

We have subsea road tunnels which have that construction. And the new tunnel between Germany and Denmark, there they are laying down cases and put ... More Information

CERN releases report on the feasibility of a possible Future Circular Collider

The estimated cost of construction of the FCC electron–positron stage, including the tunnel and all the infrastructure, is 15 billion Swiss francs... More Information

TBM break through on Auckland's £915M wastewater megaproject completes 16.2km tunnel

Auckland's major wastewater infrastructure project, the Central Interceptor, has reached a significant milestone with the final breakthrough of ... More Information

In pics: construction site of Chongming-Taicang tunnel

A smart assembling vehicle works at "Linghang" large diameter shield tunneling machine at the construction site of the Chongming-Taicang tunnel, part of the Shanghai-Chongqing-Chengdu ... More Information

IN PICTURES: Spectacular images of the removal of HS2's huge tunnelling machine

TBM Sushila was used to construct part of the Northolt Tunnel – an 8.4-mile tunnel ... construction/london-tunnels/progress-3/northolt-tunnel/tbm- ... More Information

Historic tunnels uncovered beneath Salisbury station during £5.3M upgrade project

Engineers from Network Rail and South Western Railway have uncovered a network of tunnels and rooms beneath Salisbury station during ongoing £5.3M upgrades to the station’s forecourt... More Information

Massive $450m road project connecting Russia and Georgia with six bridges & five tunnels

Massive $450m road project connecting Russia and Georgia with six bridges & five tunnels. The new road will pass through Georgia along a trade route ... More Information

Buca Metro Tunnel Excavations Reached 50 Percent Level

Important progress is being made in the construction of the line, where four tunnel boring machines (TBMs), each 100 meters long, 7 meters wide and ... More Information

'Very promising' narrow-reef boring technology nearing rollout stage

A novel tunnel boring machine (TBM) will open up Bokoni's narrow tabular dipping PGM orebody to allow narrow-reef boring to take place, so that ... More Information

A vast undersea tunnel is being built

The 7.4 billion-euro ($7.7 billion) project is a huge undertaking, in every sense. Each section of the tunnel is colossal. These concrete structures ... More Information

National Grid gets planning permission for Grain to Tilbury upgrade with new Thames tunnel

National Grid has secured full planning approval for the Grain to Tilbury project, which includes a new power tunnel under the River Thames... More Information

Right track tunnel of Huangjialing Tunnel in NW China's Gansu drilled through

A staff member works on the construction site of the right track tunnel of the Huangjialing Tunnel in Linxia Hui Autonomous Prefecture, northwest ... More Information

Shetland Islands tunnels plan takes 'huge step forward' with sonar investigations

This phase will further inform the project's development and feasibility. The tunnel project, seen by locals as pivotal for improving ... More Information

Construction of the Tarande tunnel begins next week

On March 17th, in Vilnius district Construction of a tunnel and other related infrastructure will begin at Taranda and Bukiškis. This project aims ... More Information

Delhi Metro's Golden Line achieves major tunnel breakthrough;

The construction of Delhi Metro's Golden Line achieved a major milestone on Thursday as the Tunnel Boring Machine (TBM) broke through at the ... More Information