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World Tunnel Congress 2023: “The underground space is often undervalued as an asset”

A conversation between Arnold Dix, President of ITA and Nikolaos Roussos, President of GTS As the new edition of the WTC in Athens from 12 to 18 May approaches, Arnold Dix, President of the ... More Information

Chennai Metro Update

Marina Beach to Kodambakkam Flyover - The underground section of this corridor is split into two packages (UG-01 & UG-02) each of which contains 4 km of twin tunnels. In order to complete ... More Information

TERRATEC TBMs launched for Surat Metro

TERRATEC Tunnel Boring Machines keep on advancing on Surat Metro Rail project in India. TERRATEC is pleased to announce the launch of another EPB TBM for Surat Metro in India. This unit is a ... More Information

BBT - TBM Virginia has reached the border with Austria

On 28/03/2023 an important milestone was reached for the Brenner Base Tunnel, on the Italian side, at the Mules (BZ) construction site. After 14 km of excavation and almost 4 years of ... More Information

HS2 tunnelling team celebrate milestone TBM breakthrough in Warwickshire

Press release - Today [Thursday 30 March] HS2’s tunnelling team in Warwickshire celebrated the milestone breakthrough of tunnel boring machine ‘Dorothy’ as the giant cutterhead ... More Information

Robbins TBM Miss Briella will drive the Lower Meramec Tunnel Phase 2 project

AFFHOLDER (formerly known as SAK Construction, LLC tunneling) will use the TBM named Miss Briella for the Lower Meramec Tunnel Phase 2 project, part of the Metropolitan St. Louis Sewer District. ... More Information

Tunnel segments arrive for HRBT Expansion Project

Last week the HRBT Expansion Project hit a major milestone as the first set of tunnel segments arrived by barge to the South Island from the precast plant in Cape Charles, VA. Nine (9) tunnel ... More Information

High Speed Two: Euston

Press release - The government should use the two-year pause on new construction work at HS2 Euston to develop a design that is affordable, deliverable and value for money, according to a new ... More Information

Two 15.01m Slurry TBMs for CRCHI Break through on Two Projects

Press Release - Xiangya Road river-crossing tunnel in Changsha City - On March 12th 2023, the largest slurry TBM in China’s Hunan Province broke through, which marks the completion ... More Information

Market dialogue is ongoing about how a fixed €5bn HH connection can be implemented - Denmark - Sweden

Press Release - In autumn 2022, the city of Helsingborg went out to the market with an international RFI (Request for Information) to collect proposals on how a fixed connection between Helsingborg ... More Information

WTC2024 - Call for abstracts

The 2024 World Tunnel Congress (WTC2024), the world's major tunnel and underground engineering industry congress, will be held in Shenzhen, China from 19th to 25th April 2024 with the ... More Information

Press Release - HS2 reveals final design for last of seven key Chiltern Tunnel structures

HS2 have revealed the final designs for the North Portal of the Chiltern Tunnel – the last of seven key structures for the high speed rail project’s longest tunnels. Once construction ... More Information

Second tunnel-boring machine arrives at Mount Pleasant

Press Release - Phyllis, the second of two tunnel-boring machines (TBMs) that are constructing twin tunnels for the Broadway Subway Project, broke through to the future Mount Pleasant Station early ... More Information

TELT on track for next tender phase!

On April 20 in Brussels , TELT will outline what it needs for the last operational phase (rail and technological equipment) for the Mont Cenis base tunnel, which is an essential part of the ... More Information

4th Tunnel Breakthrough in Meerut

4th Tunnel Breakthrough in Meerut The Delhi-Ghaziabad-Meerut RRTS corridor witnessed its fourth successful tunnel breakthrough in Meerut. On the 17th March 2023 the TBM Sudarshan 8.3 ... More Information

World Tunnel Congress 2023: Tunnelling in Greece, a culture of underground activities across history

Tunnelling illustrates the progress of a society and, in particular, the great technical and economic power of certain civilisations. The host country of the WTC, Greece, is a prime example with ... More Information

What's new at Geofluid 2023?

Press release - The latest Geofluid show is scheduled for Sept. 13-16, 2023 in Piacenza Italy and will be relaunching an exhibition area dedicated to contaminated site remediation activities and ... More Information

HS2 update

The UK government has announced a two-year delay to the construction of sections of HS2, the high-speed railway connecting London and the West Midlands, citing increased project costs and ... More Information

Switzerland - 2km tunnel for a new train-tram line from Lugano

The Federal Office of Transport (FOT) has issued the building permit for the new tram-train line that will connect Lugano to Ponte Tresa and Manno. This project is the first stage for a modern ... More Information

Press Release - Government commits to Lower Thames Crossing whilst construction slowed down by two years

In a Ministerial Statement, the Government set out its plans for the transport network, to drive growth across the country while managing the pressures of inflation. As part of the Ministerial ... More Information

TBM Ida will drive the west main Brenner Base Tunnel

On the 14/02/2023 the official inspection of the second TBM for the H41 Sill Gorge-Pfons construction lot of the Brenner Base Tunnel took place at Herrenknecht AG in Schwanau (D). The ... More Information

Sweden's largest infrastructure project with €80 billion to be invested over the next 10 years

Press release - Sweden's largest infrastructure project - First trains on Ostlänken in 2033 The eastern link between Södertälje and Linköping is to be completed in 2035. In ... More Information

Tunnelling on the Eglinton Crosstown West Extension reaches halfway mark

Last week the Eglinton Crosstown West Extension reached another milestone: Renny, the first TBM to start tunnelling passed the halfway point, digging over 3 km of the roughly 6 km ... More Information

WTC2023 | Historical Underground Visits - Athens Underground

Join us on Saturday, May 13th for a once-in-a-lifetime opportunity to explore the historical underground constructions of Athens. Discover the hidden secrets of the city as we visit the Memorial ... More Information

Gamuda Wins Major Transport Project in Australia

Press release - Gamuda Australia has been awarded a major transport project by the NSW Government, the Sydney Metro West – Western Tunnelling Package. In a consortium with Laing ... More Information

Press release - First bore of Silvertown Tunnel completes

Jill, the Tunnel Boring Machine (TBM) delivering the Silvertown Tunnel in east London, has reached the rotation chamber in the Greenwich site, completing the tunnelling of the first bore. The ... More Information

UYAK2023 postponed from March to June 2023

Due to the devastating earthquakes in Turkey UYAK2023, the 5th International Underground Excavations Symposium and Exhibition has been postponed to June 5-6-7, 2023. The other key dates that have ... More Information

TBM Vida breaks through on the West Gate Tunnel Project 

The first of two giant TBMs has broken through on the West Gate Tunnel Project, marking the completion of excavation on the 2.8 km first tube of twin tunnels under Yarraville - a Melbourne suburb ... More Information

Press release - Atkins appointed to design €9.5bn Dublin MetroLink project

Atkins has been appointed to the design for the advance works programme of Dublin’s £8.4bn (€9.5bn) MetroLink project. The scheme, given the green light in July of last year, ... More Information

CRCHI - Slurry TBM "Channel Express" Launched for the Construction of Water Supply Tunnels in Singapore

Press Release:- On February 1st, the "Channel Express", a Slurry TBM that was manufactured and shipped by CRCHI to Singapore was launched successfully following a ceremony. The TBM had been ... More Information

Australasian Tunnelling Conference 2023

The 18th Australasian Tunnelling will be hosted by the NZTS in Auckland, Aotearoa New Zealand between the 5th and 8th November 2023. With an overarching focus on Trends and Transitions in ... More Information

CEAR’s R&D updates for its MV Junction boxes

Press Release - Cear’s R&D dept. is always improving the technical performances of its products and specifically for its MV Juction and Distribution boxes. We recently received approval ... More Information

BBT - Segments production started for lot H41 Sill Gorge-Pfons

The main part of tunnels in lot H41 Gola del Sill-Pfons will be driven by two TBMs. The machines - during their tunnelling - will install the rings, composed of prefabricated concrete ... More Information

Strata Worldwide Celebrates 30 Years in Business

The global safety company looks back on accomplishments and looks forward to providing continued support for their industries around the globe. ATLANTA, GEORGIA - January 30, 2023 - Strata ... More Information

Work begins on the Dehesa del Terzuelo tunnel construction on the High Speed Line to Extremadura

Press Release - Adif Alta Velocidad has moved significantly forward in the construction of the 69km second section of the 437km High Speed Line Madrid-Extremadura. This will link Talayuela and ... More Information

Major breakthrough for Broadway Subway Project

A first major milestone has been reached by the Acciona Ghella Joint Venture on the Broadway Subway Project. Elsie, the first of two 150-m-long TBMs that began excavating for the Broadway Subway ... 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

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