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



A modern, safe, resilient, and reliable communication system is a key component of any confined space, mine, or tunnel access safety system. Tunnel workers rely on regular contact with their ... More Information

Results of the Purple Line Extension Section 3 TBM art and naming contest

Metro has selected the winners of its art and naming contest for its third and final set of tunnel boring machines that will dig twin Purple Line Extension subway tunnels between Westwood and ... More Information

Melbourne Metro Tunnel Project Updates

TBM Joan - On the 20/10/20 TBM  Joan began its 1 km journey from the Parkville Station site to the new State Library Station site of the Melbourne metro. Named after Victoria’s ... More Information

BBT - Isarco river underpass tunnelling begins

BBT - Isarco river underpass tunnelling begins

After months of preparation on the Isarco River Underpass construction site, the excavation of the first few metres of the tunnel has begun.   The excavation works in this southernmost ... More Information

Designs for HS2 Canterbury Works vent shaft and headhouse revealed

On 27/10/2020 HS2 revealed updated designs for the Canterbury Works vent shaft headhouse and compound, in South Kilburn, London.  It will be one of four structures that will be built to provide ... More Information

Super sewer drives its way through London passing underneath 21 bridges

Super sewer drives its way through London passing underneath 21 bridges

Super sewer drives its way through London passing underneath 21 bridges   A giant tunnel has this week been dug under the final bridge in London before completion.   On 26/10/2020 ... More Information

Modified TBM to construct the diversion tunnel for the Mularroya dam

In March 2008 the ACCIONA and Sacyr consortium were awarded the contract to design and construct the Mularroya dam in La Almunia de Doña Godina, Chodes and Ricla (Zaragoza). The contract ... More Information

Factory Acceptance Testing for the Ship Canal Water Quality Tunnel Storage Project’s TBM

Factory Acceptance Testing for the Ship Canal Water Quality Tunnel Storage Project’s TBM

A TBM EPB-Shield (diameter 6.57 m) has been assembled for the Seattle Public Utilities and King County Wastewater Treatment Division's Ship Canal Water Quality Tunnel Storage Project. The TBM is ... More Information

ITA Tunnelling Awards 6th edition - List of finalists

ITA Tunnelling Awards 6th edition - List of finalists

Online Conference and Ceremony - The international competition launched in 2015 by International Tunnelling and Underground Association (ITA) returns in 2020 for a promising 6th edition. For 5 ... More Information

HAGERBACH NXT 50 WEBINAR – Moving beyond the obvious

HAGERBACH NXT 50 WEBINAR – Moving beyond the obvious

Taking part in the HAGERBACH NXT 50 series of webinars will broaden your understanding on the role of underground spaces in helping humankind sustainably develop on this planet and eventually future ... More Information

Clearwater Project’s TBM arrives

On the 22/10/2020 the Mixshield TBM (diameter 6.54 m)  for the Los Angeles Outfall Tunnel project arrived at its destination.   The Los Angeles County Sanitation Districts invited Los ... More Information

City Rail Link’s TBM arrives in Auckland

 City Rail Link’s TBM  arrives in Auckland

Last week a TBM, named Dame Whina Cooper in honour of the Maori rights champion, arrived in Auckland after a voyage of more than 9000 km  from its factory in southern China.   The ... More Information

InnoTrans postponed until 2022

Due to the constantly changing situation regarding the coronavirus pandemic and the resultant lack of planning certainty, InnoTrans is to be postponed until 2022. After consulting with international ... More Information

Cross River Rail Update

Work is progressing well, across Cross River Rail’s eight worksites in Brisbane. The project will help transform South East Queensland by unlocking the bottleneck at the core of ... More Information

Sydney’s newest motorway, NorthConnex, will be open to traffic on Saturday 31st October

Sydney’s newest motorway, NorthConnex, will be open to traffic on Saturday 31st October

NorthConnex, the dual 9 km tunnel which will link the M1 Pacific Motorway at Wahroonga to the Hills M2 Motorway at West Pennant Hills, will open to traffic on the 31/10/2020,  taking ... More Information

MMRC completes 33rd breakthrough from Churchgate to Hutatma Chowk

MMRC completes 33rd breakthrough from Churchgate to Hutatma Chowk

On 16/10/2020 MMRC  achieved a 33rd breakthrough with the 653-m long tunnel from Churchgate to Hutatma Chowk station for the metro Line 3 in Mumbai.  It is the first TBM breakthrough ... More Information

Agreement reached on the Somport railway tunnel

Mitma  (Ministerio de Transportes, Movilidad y Agenda Urbana) and Nueva Aquitania signed an agreement  for the contracting and execution of a study to look at the re-opening of the Somport ... More Information

Robbins Main Beam carves out a win in Louisville

Robbins Main Beam carves out a win in Louisville

Tried and Tested TBM and conveyor complete Ohio River Tunnel  - A 6.5 km (4 mi) long tunnel for wastewater storage below Louisville, Kentucky, USA has more to it than meets the eye.  ... More Information

Press release - HS2 awards contract for first two London tunnelling machines

Press release - HS2 awards contract for first two London tunnelling machines

Press release - HS2 awards contract for first two London tunnelling machines This month the contract for the first two giant tunnel boring machines for London’s HS2 tunnels was signed with ... More Information

Atal Tunnel Inaugurated in Rohtang, Himachal Pradesh

On 03/10/2020 Prime Minister Shri Narendra Modi inaugurated the 9.02 km Atal tunnel in Rohtang, in the Pir Panjal range of Himalayas at an altitude of 3000 m (10,000 Feet) from the Mean Sea ... More Information

Sarwat Mountain tunnel completed

On 16/09/2020 the Saudi Arabia’s Saline Water Conversion Corporation (SWCC) completed the longest water pipeline tunnel project in the world. Its length is 12.445 km driven with a TBM, ... More Information

Light at the end of the tunnel: Balfour Beatty breaks through its final onshore tunnel at Hinkley Point C

Light at the end of the tunnel: Balfour Beatty breaks through its final onshore tunnel at Hinkley Point C

Balfour Beatty, alongside EDF, has celebrated a major milestone on its Hinkley Point C tunnelling and marine project, as the team successfully completed the breakthrough of the longest and final ... More Information

TBM Rachel breaks through after 7km journey from Fulham to Acton

TBM Rachel breaks through after 7km journey from Fulham to Acton

Press release - A giant tunnel boring machine (TBM) building part of London’s new super sewer has today completed its journey, marking another crucial step toward a cleaner, healthier River ... More Information

Martina TBM launched for the HS/HC railway line Brescia Est - Verona

Martina TBM launched for the HS/HC railway line Brescia Est - Verona

On the 05/10/2020 at the Lonato del Garda (BS) shipyard, the Cepav Due consortium, made up of Saipem (59%), Pizzarotti (27.27%) and Icm, the former Maltauro (13.64%), started work on the HS/HC ... More Information

Warsaw metro Line 2 progress report

Warsaw metro Line 2 progress report

By the 9th October 2020 TBM shield work for the construction tunnels for the second line of the Warsaw metro reached 2239/ 2908m for TBM Maria and 921/2,878m for TBM Anna in the East section; ... More Information


Geofluid will take place from the 15th to the 18th of September 2021 in the Piacenza exhibition center in Italy.  This international trade fair is for the drilling & ... More Information

Eurock2021 – Call for abstracts

The Organizing Committee of the Eurock 2021 invites all interested geotechnical professionals and academics to submit abstracts for the conference, deadline: October 31st 2020. Abstracts must be ... More Information

Italy - Castelbello-Colsano Ring Road

The construction of the new 3.36 km ring road between Castelbello and Colsano is ongoing. So far 1260 m of the 2494 m long Castelbello tunnel has been completed. The excavation has been carried out ... More Information

Aucklands City Link Update

Aucklands City Link Update

The first cuts have been made underground to build the Karangahape Station on the City Rail Link.  At 32 m below street level the Karangahape Station will be New Zealand’s deepest ... More Information

World Tunnel Congress in Copenhagen Postponed to 2022

The World Tunnel Congress in Copenhagen, Denmark, originally scheduled for May 2021, has been postponed to April 2022, due to the COVID 19 pandemic. The decision was taken by a vote of the 78 member ... More Information

TERRATEC Open TBM delivered for Mumbai’s Water Tunnel Project

TERRATEC Open TBM delivered for Mumbai’s Water Tunnel Project

TERRATEC’s Open TBM for the Municipal Corporation of Greater Mumbai’s (MCGM) Amar  Mahal II Tunnel Project in Maharashtra, has passed the Factory Acceptance Test (FAT),making it ... More Information

Systemair fans used in European infrastructure works

Systemair fans used in European infrastructure works

The European TEN-R (Trans Europe Netwok-Rail) programme also provides for a corridor between Amsterdam (NL) and Genoa (IT), which involves crossing Switzerland. The aim is to reduce greenhouse gas ... More Information

Milestone for Watercare’s Central Interceptor project

Milestone for Watercare’s Central Interceptor project

After ten months, the Central Interceptor TBM has passed its official Factory Acceptance Test (FAT). The TBM, which has been named ‘Hiwa-i-te-Rangi’ after a Mataariki star, has been ... More Information

Ontario Line

Ontario Line

Metrolinx has been  sharing improved plans for the Ontario Line in Toronto, as teams learn more about the geography and infrastructure, both above ground and below the surface as well as ... More Information

Grand Paris Express Line 14 South updates

Grand Paris Express Line 14 South updates

TBM Koumba breakthrough at the Pont de Rungis station   On 17/09/2020 the GIE NGE GC / Impregilo Joint Venture with the TBM Koumba achieved another milestone for the Grand Paris Express ... More Information

Tunnel cross passages near completion

Tunnel cross passages near completion

Work is nearing completion on the cross passages which connect the new metro railway tunnels between Chatswood and Sydenham. Cross passages are an important safety feature of the Sydney ... More Information

Tunnelling News

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

World's Longest Twin-Lane Tunnel Inaugurated In Arunachal Pradesh

Constructed by the Border Roads Organisation (BRO) for INR 825 crore, the tunnel is strategically vital due to its proximity to the Line of Actual ... More Information

The £13.3bn tunnel 8.5 miles long that could transform one of the world's biggest cities

The Second Avenue Subway's per-mile construction cost is higher than that of other projects in similar cities like London's Crossrail and Paris's ... More Information

First look inside Silvertown tunnel as TfL confirms summer 2025 opening

... tunnel construction in the face of environmental concerns. Construction is costing about £1bn – with a further £1.2bn due in annual repayments ... More Information

Consortium of Aecom and Arcadis appointed to tunnel and station design contract for Ontario metro

The scope of work for the PTUS contract includes construction of 3km of twin tunnels underneath Pape Avenue between the Gerrard tunnel portal and ... More Information

Snowy Hydro is inching towards powering the nation

... tunnelling progress of one of its critical boring machines ... Some 80 metres underground in temperatures well in excess of 30C, tunnel boring machine ... More Information

Judge rejects challenge to £1.7bn Stonehenge Tunnel

The High Court has thrown out a case brought by campaigners against the £1.7bn Stonehenge Tunnel project. Mr Justice Holgate said most of the ... More Information

9 of the longest underwater tunnels in the world

These stations are the first railway stations constructed under the sea and serve as emergency escape points in case of a disaster. Today, the Seikan ... More Information

EPC contractors sought for Dubai's £17bn sewer tunnels project

The strategic sewerage tunnels project by Dubai Municipality known as the Deep Tunnels Portfolio will involve the construction of wastewater assets ... More Information

The $7BN Mega-Tunnels You've Never Heard Of

But thanks to some incredible underground construction methods, Antwerp is now on course to complete a massive piece of infrastructure it's been ... More Information

3 listed & 2 Unlisted get LOA to build Mumbai Coastal Road Ext

The underground tunnel will run below Malad and Kandivali through the Mangrove creeks and a tunnel boring machine (TBM) will be used for this phase. More Information

New tunnel planned to under the Thames at Tilbury and Gravesend

ianVisits ... tunnel (c) National Grid. Construction will be done by a conventional tunnel boring machine (TBM), which will launch from a 41-metre deep shaft dug ... More Information

Third tunnel breakthrough on Guildford sewage works

A micro-TBM recently broke through on a new tunnel being built for Thames Water's project to relocate sewage treatment works in Guildford. More Information

Japan maglev train project being derailed by Shizuoka stalemate

Opposition in Shizuoka Prefecture emerged from fears the planned tunnel construction for the line could adversely affect the overall volume of water ... More Information

World's most expensive tunnel that ended up costing a whopping £2.3m a day to build

Over 5000 construction workers were employed to complete the Central Artery/Tunnel Project in the United States. More Information

Underground or Elevated Metro Rail – Which One is Better for India?

The cost of tunnel boring machines (TBM) is another significant component. The tunneling cost can be reduced by making longer tunnel contract ... More Information

From Undersea Tunnel To Station Redevelopment

The NHSRCL will construct an adjoining tunnel location as part of the package. To construct this tunnel, the Tunnel Boring Machines (TBMs) with a ... More Information

Second tunnel boring machine for Broadway Subway reaches South Granville Station

The tunnel boring machines will end their journey just before Arbutus Station, which spans two city blocks, with the west block used as the footprint ... More Information

BESIX-MTH awards Nordhavn work to Bravida

... construction of the Nordhavn Tunnel. By & Havn is tasked with developing Ørestad and the port of Copenhagen and runs the daily operations of the ... More Information

After India's first undersea tunnel, Mumbai to get its longest intra-city underground road

... construction with viaducts and modern safety measures. The Coastal Road tunnel is India's first undersea tunnel, constructed using a 12-metre ... More Information

3,200 tonne TBM delivered to France-Italy rail tunnel project

A tunnel boring machine (TBM) manufactured by German tunnelling and mining firm Herrenknecht has been delivered to the Lyon-Turin Mont Cenis base ... More Information

FPT Industrial engines power the construction of the longest immersed tunnel in the world

The construction of the Fehmarnbelt tunnel is an important addition to Europe's sustainable transport network of the future. It will offer the ... More Information

Work resumes at Silkyara tunnel after 2 months

On the instructions of the Union Ministry of Road Transport and Highways, construction work of protective nature has begun from both Barkot and ... More Information

Webuild Joint Venture awarded Pape Tunnel and Underground Stations Progressive DB contract

Webuild will lead a joint venture to develop the project for the "Pape Tunnel and Underground Stations (PTUS)" section of the Ontario Line, the new rapid transit line that will run through ... More Information

Third Tunnel Boring Machine Lowered at Panagal Park

In a significant milestone for the Chennai Metro Phase 2 project, the third Tunnel Boring Machine (TBM) has been successfully lowered at the ... More Information