Tunnelbuilder Promoting the world's tunnelling industry to a huge qualified audience

View the Spanish Tunnelbuilder website View the Italian Tunnelbuilder website

Archive - News

Featured News

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

Switzerland - construction update for Isla Bella tunnel on A13 

Press release - On January 26, 2023 the patron saint Santa Barbara blessing was given so construction could begin for the safety tunnel for the Isla Bella tunnel. The tunnelling works will be ... More Information

CRCHI Showcases the overall solution for underground engineering equipment at bauma CONEXPO INDIA 2023

The 6th International Trade Fair for Construction Machinery, Building Material Machines, Mining Machines and Construction Vehicles (bauma CONEXPO INDIA 2023) kicked off on January 31, 2023. China ... More Information

Cross River Rail Project - January/February updates

Cross River Rail Project  - January/February updates

Teams have now completed Woolloongabba - Albert Street and Boggo Road - Woolloongabba sections in both directions, Roma Street to the Northern Portal 1.2 km in the upline and 750 m in the ... More Information

HS2 celebrates as longest tunnels reach halfway point under the Chilterns

On 01 February HS2 Ltd confirmed that Florence and Cecilia, the two giant TBMs driving the HS2 high speed rail project’s longest tunnels, have passed the halfway point of the 16 km (10 ... More Information

State of California Awards EUR344 (USD375 million) for VTA’s BART Project 

On 31/01/2023 the State of California awarded EUR344 million (USD375 million) to the Santa Clara Valley Transportation Authority (VTA) for its BART extension into Downtown San Jose and Santa ... More Information

Cross River Rail Project  - January/February updates 

Teams have now completed Woolloongabba - Albert Street and Boggo Road - Woolloongabba sections in both directions, Roma Street to the Northern Portal 1.2 km in the upline and 750 m in the ... More Information

WTC 2023 - Early Registration Fees deadline extended! 

After many requests, the Early Registration for WTC2023 to be held at Megaron Athens International Conference Centre (MAICC) on 12 – 18 May 2023 has been extended. The new early bird deadline is ... More Information

TERRATEC TBMs - Chennai Metro Rail update

In December, TERRATEC celebrated the assembly of the third of five ordered 6.61m diameter Earth Pressure Balance Tunnel Boring Machines (EPBMs) for the Chennai Metro Rail project in India. ... More Information

City Rail Link Press Release

Press release - Ngā mihi o te Tau Hou (happy New Year) from the team at City Rail Link! We’re back and ready for a busy year working on the next phase of works – fitting out the tunnels and stations ... More Information

Waterproof shotcrete with self-healing properties to repair and protect the vault of  the tunnel Paradiso 

Waterproof shotcrete with self-healing properties to repair and protect the vault of  the tunnel Paradiso  Press Release - The phenomenon of self-healing of cracks in concrete structures is a ... More Information

First blast for the Hovik tunnel on E18

Skanska Norge AS and the Norwegian Public Roads Administration started  the drill&blast excavation works of the Hovik tunnel on the Strand-Ramstadsletta section of the E18 Lysaker-Ramstadsletta. In ... More Information

Works begin on the Perca bypass ready for Winter Olympics 2026

This month the construction site for the 3 km Perca ring road on the SS 49 in Val Pusteria began preparatory works. The Perca ring road will improve the viability and quality of life of the ... More Information

Tunnelling begins on Scarborough Subway Extension

Tunnelling begins on Scarborough Subway Extension

TBM Diggy Scardust has officially started tunnelling for the Scarborough’s 7.8-km subway extension that will bring subway service farther north into Scarborough and accommodate as many as ... More Information

Kanpur Metro - Second breakthrough on Moti Jheel-Nayaganj underground section

Kanpur Metro - Second breakthrough on Moti Jheel-Nayaganj underground section

On the 17/01/2023 the Joint Venture Gulermak-Sam India reached an important milestone with the breakthrough of the Terratec TBM S92. The breakthrough happened at Nayaganj Station on the 3.62 km Moti ... More Information

Sepulveda Transit Corridor project

Sepulveda Transit Corridor project

Metro will host three community open houses - one of which will be virtual - on January 21, 24, and 26 - for the Sepulveda Transit Corridor Project, which will build a heavy rail line or monorail ... More Information

WTC2023 - Early Registration

WTC2023 - Early Registration

WTC 2023 will be held in a hybrid format. It will mainly be a congress with physical attendance combined with its digital side. Physical participation is encouraged so that this congress marks the ... More Information

Norway - Stad Ship Tunnel supplier conference

To date, in relation to the Stad ship tunnel construction project, about 50 contractors and suppliers have registered for the Supplier Conference. The conference will be held in Gardermoen on the ... More Information

Update for the Lonato tunnel on the HS/HC railway line Brescia East - Verona

On Saturday 7 January 2023, the TBM Martina - diameter 10.03 m, length 150 m and weight 1,750 t - began excavation from the Campagna di Lonato site  of the 4782 m second tube of the Lonato rock ... More Information

The Cairo Metro Line 4 Project

The Cairo Metro Line 4 Project

In December 2022 Eng. Sayed Farouk - CEO & Chairman of the Arab Contractors Company, visited the Cairo Metro Line 4 project to follow up on the work progress. First, there was a meeting to ... More Information

UYAK2023 Deadline Extended

On the request from authors, the full paper submission date of UYAK2023 Symposium has been extended up to January 15, 2023. The full papers of the accepted abstracts should be uploaded to the ... More Information

Normet acquires Finland-based boom systems manufacturer Rambooms and hydraulic attachments supplier Marakon

Press release - Normet has agreed to acquire Rambooms Oy, a manufacturer and supplier of rock breaker boom systems, and Marakon Oy, a supplier of hydraulic hammers and excavator attachments for the ... More Information

Undergraduates offered paid summer placements on HS2

University students who live, or study, in the Midlands are being offered the chance to join HS2’s construction partner Balfour Beatty VINCI (BBV) on an eight-week paid work placement this ... More Information

TBM named for the S19 Rzeszów Południe - Babica expressway

TBM named for the S19 Rzeszów Południe - Babica expressway

The name of the TBM that will drill the 2.2 km long tunnel on the S19 Rzeszów Południe - Babica expressway was recently announced as Karpatka.   A selection of names were chosen by ... More Information

Romania - Last breakthrough for the Batuta tunnel 

In January the excavation of the Batuta railway tunnel was completed. It is part of upgrading of the Frontiera-Curtici-Simeria railway line for trains with a maximum speed of 160 km/h. This ... More Information

Two TERRATEC EPBMS ready for Bangkok flood prevention project

Two TERRATEC EPBMS ready for Bangkok flood prevention project

Two new TERRATEC TBMs will take part in the Khlong Prem Prachakorn Drainage Tunnel Project for the Department of Drainage and Sewage Bangkok Metropolitan Administration (BMA) in Thailand. ... More Information

The Double Shield Hard Rock TBM Jasmine starts drive

On December 7th the first double shield hard rock TBM - named Jasmine after the Philippines’ national flower ‘’sampaguita’’ and imported from China - has started to ... More Information

Chengdu-Zigong High-speed Railway project - Breakthrough in the Jinxiu tunnel

Chengdu-Zigong High-speed Railway project - Breakthrough in the Jinxiu tunnel

Press release - On December 12th - after 14 months of boring - Jinxiu, the China’s largest EPB TBM, developed by CRCHI marked its first major breakthrough in ... More Information

TBM Lilia for Brenner Base Tunnel passes acceptance test

TBM Lilia for Brenner Base Tunnel passes acceptance test

The first of the two TBMs for the H41 Sill Gorge-Pfons construction lot of the Brenner Base Tunnel has formally passed its acceptance test at Herrenknecht AG in Schwanau, Germany. The ... More Information

Switzerland - PoLuMe: given green light from the Federal Council

In its meeting on the 16th December 2022, the Federal Council approved the general project for the upgrading of the A2 motorway from Lugano to Mendrisio (PoLuMe). The total investment amounts to ... More Information

The HRBT Expansion Project - TBM Main Drive Installation update

The HRBT Expansion Project - TBM Main Drive Installation update

Work is progressing on the reassembly and placement within cell 1 of the South Island Launch Pit of TBM Mary with her shield section already to set in place. In the next few days the team will lift ... More Information

This is how Augmented Reality digitalizes Machinery and Plant Engineering at Häny

From article by AUGMENT IT - With Augmented Reality, companies increase efficiency and quality in the inspection processes of Plants and Machines, as the case of Häny AG impressively ... More Information

Terratec TBM S88 Breaks through in Meerut

Terratec TBM S88 Breaks through in Meerut

On the 15/12/2022 Sudarshan 8.1, the Terratec TBM EPB S88, reached the Meerut Central RRTS Station completing the 1823.39 m long tunnel between Bhainsali to Meerut Central Stations (Package 8). ... More Information

Tunnelling News

Utilities tunnel dug through 'challenging' ground conditions under River Tees

Main contractor Farrans Construction worked with specialist contractor Joseph Gallagher to construct the tunnel. During its five weeks of tunnelling ... More Information

China develops world's first boring and blasting machine

In a groundbreaking development, the world's first boring and blasting machine, jointly developed by Tsinghua University and China Railway Science and Industry Group, has successfully ... More Information

Tunnel boring machine wedged in hard rock, leaving Snowy 2.0 hydropower project with new issues

Tunnelling problems are plaguing the $12 billion Snowy 2.0 hydropower project, with a boring machine previously bogged in soft ground now wedged in ... More Information

Construction Complete On New High-Speed Rail Tunnel

Inside the completed Desheng Tunnel, and inset, a Chinese high-speed train. Work on the project is now complete. © China ... More Information

DC Water Breaks Ground on Potomac River Tunnel Project

The Project consists of a large-diameter deep sewer tunnel, diversion facilities, drop shafts, and support structures to capture flows from existing ... More Information

Morocco’s proposed $13 billion underwater tunnel to connect Europe to Africa by 2030s

An historic intercontinental rail link is aiming to link Europe to Morocco with an ambitious underwater tunnel. The Moroccan National Company for Strait Studies (SNED) announced last ... More Information

Government set to fund £1bn final HS2 London tunnel drive

The project was halted as part of Prime Minister Rishi Sunak’s £6.5bn cost-cutting plan announced last October. This involved axing phase 2 to Manchester and finding a private investor ... More Information

HS2 Project Update, May 2024

Our Victorian railways have carried us successfully through history, but with passenger numbers continuing to rise, investing in new, modern railway lines like HS2 is the key to meet the ... More Information

PM inaugurates breakthrough of Sunkoshi Marin Diversion tunnel

A breakthrough of the Sunkoshi Marin Diversion Multi-purpose Project tunnel has been made... More Information

Toronto's Eglinton Crosstown extension moves closer to tunnelling completion

The project is being delivered by Infrastructure Ontario and Metrolinx. West End Connectors was awarded the C$729M (£425M) contract to design, build ... More Information

_Fehmarnbelt tunnel program hits major milestone

DEME Group said that the Fehmarnbelt tunnel project, one of Europe's largest infrastructure projects, has achieved a significant milestone with ... More Information

The incredbile new £12bn mega-tunnel that could end traffic chaos in world famous city

Construction on the £12.63 billion mega-tunnel has already begun and it is expected to be open in 2035. · Animation for The Hudson River Tunnel project. More Information

Great Lakes Tunnel Project makes progress

Ready to move forward. Enbridge is preparing to begin tunnel construction as soon as possible, following receipt of environmental permits ... More Information

Hudson Tunnel Project is expected to create 95,000 jobs

The report is based on research done on behalf of the Gateway Development Commission. “The Hudson Tunnel Project is the most pressing infrastructure ... More Information

The $2.8BN Megaproject Dividing London

London is building a controversial new tunnel under the River Thames. Head to https://brilliant.org/TheB1M/ for a 30-day free trial + the first 200 people will receive 20% off their ... More Information

Namma Metro: Underground tunnel work on Pink Line 95% complete

This underground portion includes the ambitious task of constructing 20.992 km of twin tunnels. Progress is also underway on the construction of 18 ... More Information

How an ancient water tunnel design is cooling 21st-century streets

In Seville, 3,000-year-old underground technology is being transformed in modern day air-conditioning. An aqueduct at the unopened CartujaQanat pilot ... More Information

Frederick Douglass Tunnel Program B&P Tunnel Replacement Project

Project Description: Proposed utility and roadway relocations include civil work to support the construction of Amtrak's Frederick Douglass Tunnel. More Information

Fehmarnbelt | Purpose-built vessel arrives to line tunnel trench with gravel 'cushion'

The Fehmarnbelt Fixed Link is a new road and rail tunnel being constructed between Denmark and Germany. It will comprise 89 precast concrete ... More Information

Successful Breakthrough of Gudauri Tunnel in Georgia's North-South Corridor KK Highway Project

KAZBEGI, Georgia, April 23, 2024--The 10-kilometer LOT1 Section is constructed by China Railway Tunnel Group Co., Ltd., of which the Gudauri ... More Information

Construction of Shinku La Tunnel to bolster all-weather connectivity in Ladakh Rising Kashmir

Leh, Apr 21: Member of Parliament from Ladakh, Jamyang Tsering Namgyal, announced that work on the strategically vital Shinku La Tunnel is set to ... More Information

Tunneling works for key Davao bypass road seen completed this year

The Davao City Bypass Construction Project is among the 14 foreign-assisted infrastructure projects approved by the National Economic Development ... More Information

Hamptons Subway Cuts Ribbon on New Foxwoods Tunnel

Hamptons Subway, with U.S. Transportation Secretary Pete Buttigieg, cut the ribbon to begin construction of the new tunnel from Sag Harbor to ... More Information

_TBM quartet tackles differing geology on twin bore tunnel under London

All four tunnel boring machines are now working on HS2's Northholt tunnel, which is divided into two geologically differing sections. More Information

CRCHI video

New CRCHI video for world leading underground equipment - Technology innovates the world... More Information

Deer Creek update

Exciting update from the Deer Creek project team! The Wasatch Worm is almost in the ground and will be ready to start tunneling this week. Over the next few months, it will be devouring a ... More Information

Stonehenge tunnel: Underground cabling installed, while other enabling works paused

The scheme, which involves the construction of a new 12.8km two-lane dual carriageway with a 3.2km tunnel under the Unesco World Heritage Site, was ... More Information

Nepal's first transport tunnel being built with Japanese assistance

Nepal and Japan signed the contract for construction of the tunnel on September 23, 2019, while the commencement started on November 14, 2019. More ... More Information

Cowi selected as technical advisor on world's first ever ship tunnel proposed in Norway

Construction is currently estimated to begin next year. The objective of the Stad Ship Tunnel project is to improve the navigability and safety of ... More Information

How Arnold Dix became a Himalayan hero after rescuing 41 workers from Indian tunnel collapse

Arnold Dix slid his hand into a gap in the rock at the entrance to a tunnel where 41 men were trapped alive, put his back against the cold stone and listened, and felt, and listened some ... More Information

Central Interceptor Tunnel Boring Machine

Watercare Services Limited’s Central Interceptor Tunnel Boring Machine, Hiwa-i-te-Rangi, has achieved a significant milestone, reaching 10,000m (10 kilometres) since leaving Māngere in ... More Information

New tunnelling machine joins three others digging high-speed line under London

Construction of the new HS2 line has hit another major milestone with the launch of the fourth – and final – machine being used to build the giant Northolt Tunnel beneath the capital... More Information

Lower Thames Crossing planning decision moves a step closer

On 21 March, the Planning Inspectorate confirmed that the Examining Authority has sent their recommendation report on the Lower Thames Crossing Development Consent Order (DCO) application ... More Information

AECOM-Jacobs JV signs on to $6B Amtrak tunnel job

Amtrak is gearing up to dig deep in Baltimore. The railroad company selected ADVANCE, a joint venture between Dallas-based infrastructure firms AECOM and Jacobs, to serve as the delivery ... More Information

Lower Thames tunnel boosts new orders data

UK construction contract awards reached their highest level in February 2024 for seven months, according to one of the industry's data monitoring ... More Information

The incredible new £53m tunnel in Spain linking two pretty cities

The work is part of efforts to modernise the railway line between Ourense and Lugo in the autonomous Galicia region. Spanish construction giant ... More Information

ECRL hits new milestone with the completion of three tunnel excavations in Bentong district

The ECRL project features the construction of 41 tunnels with a total length of approximately 69 km along its rail alignment. Section A (Kota Bharu- ... More Information

Boring Co. receives go-ahead to drill more Vegas Loop tunnels

LVCVA President and CEO Steve Hill offered the company access to safety officers after the company was fined $100000 for construction violations ... More Information

Biden-Harris Administration Announces Nearly $4 Billion in Support

The project includes construction of a new two-track heavy rail tunnel along the Northeast Corridor from the Bergen Palisades in New Jersey to ... More Information