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Sydney Metro tunnelling to create thousands of jobs

On the 07/04/2020 Minister for Transport Andrew Constance announced the start of the tender process to build almost 50km of new metro railway tunnels between Greater Parramatta and the Sydney CBD on ... More Information

First blast at Sodermalm

First blast at Sodermalm

On the 03/04/2010 the first blast took place to start the first tunnel for the Blue metro Line's extension under Saltsjon and Sodermalm  in Stockholm: click here to view the video.  The ... More Information

Swiss Tunnel Congress 2020 to be held online

Due to the current worldwide conditions in regards to COVID-19, the Executive Committee of the STS has decided to cancel all events relating to the Swiss Tunnel Congress scheduled to take place in ... More Information

Purple Line Extension in Los Angeles

Purple Line Extension in Los Angeles

The Purple Line Extension Transit Project will be welcoming the last two TBMs which will join the Section 1 TBMs Elsie and Soyeon and the Section 2 TBMs Harriet and Ruth in Los Angeles. The ... More Information

Stockholm Metro update

Stockholm Metro update

Stockholm Metro to Alvsjo - Planning for the Metro between Fridhmsplan and Alvsjo, via Liljeholmen, has begun this year after an agreement was reached between the Municipality of Stockholm and ... More Information

The ITA tunnelling awards 2020 - Call for entries

The 6th edition of the ITA Tunnelling Awards will take place at the end of the year (exact place and date will be confirmed soon). For this edition, some changes are proposed in the categories with ... More Information

Normet Technologies for Sprayed Concrete Animation

Normet Technologies for Sprayed Concrete Animation

Normet Oy brings you an animation to show how to optimise the cost and quality of sprayed concrete, showing its delicate combination of different factors. See how Normet can help you improve your ... More Information

The GuardIAN Intelligence Network from MineArc

The GuardIAN Intelligence Network from MineArc

What is a GuardIAN? It is a protector. A defender. A guide. In response to industry requirements, the GuardIAN Intelligence Network has been designed to improve personnel safety, increase ... More Information

Liafjell- Olvikvatnet finished next year

Liafjell- Olvikvatnet finished next year

The Nordland County Council Bent-Joacim Bentzen assured the Liafjell - Olvikvatnet project will be completed  for autumn 2021. Construction of the new 5.5km-long stretch of the Liafjellet - ... More Information

Construction on Moscow Subways to continue

Construction on Moscow Subways to continue

Despite the set of measures to prevent the spread of coronavirus, the pace and scope of work on the construction of the Moscow's subway will not decrease. Today, active tunnelling in Moscow involves ... More Information

Press release - Forrestfield Airport Link project update

In late July 2017, TBM Grace set off from Forrestfield to Bayswater, building the tunnel that will house the Forrestfield-bound trains. On February 18 tunnel boring machine (TBM) Grace arrived at ... More Information

4 tunnelling shows postponed

NASTT’s No-Dig Show - Postponed Due to the COVID-19 response situation going on throughout the United States and Canada, the 2020 NASTT’s No-Dig Show, originally scheduled for April 5-9 ... More Information

Tunnelbuilder turns 21!

Tunnelbuilder turns 21!

Today Tunnelbuilder celebrated 21 years of providing the tunnelling community with up to date, daily information on tenders, awards and news from throughout the world. 21 years ago tunnelling ... More Information

City Rail Link tunnels - Names Shortlisted for TBM

Georgina, Margaret and Whina: these are the 3 possible names of the TBMs that will burrow under Auckland to complete the dig of the City Rail Link tunnels. The names were shortlisted from thousands ... More Information

Government decides to re-tender the remainder of the Zuidasdok project

The administrative principals (the Ministery of Infrastructure & Water Management and the municipality of Amsterdam) have decided on a different approach for the further implementation of the ... More Information

A message from MineArc

A message from MineArc

Friends of MineARC - Health and safety is what we do. Each day, over 50,000 people around the world rely on us and our products to keep them safe.  We don’t take this responsibility ... More Information

TERRATEC marks major milestone in Bangkok

TERRATEC marks major milestone in Bangkok

TERRATEC marks its latest milestone on the Orange Line metro project, in Bangkok, Thailand, with the breakthrough of the Westbound running tunnel on Contract E3 .   Recently, TERRATEC joined ... More Information

Save-the-Date: 2020 Breakthroughs in Tunnelling Short Course

The Breakthroughs in Tunnelling Short Course, the longest-running and most-attended course of its kind, marks its 13th year in 2020. The 2020 course returns to the University of Denver in Denver, ... More Information

Blog - On the Move: Robbins TBMs Around the World

Blog - On the Move: Robbins TBMs Around the World

At any given time Robbins TBMs are operating in dozens of countries around the world at all project stages. Thus far, 2020 has been no exception to the rule: From an icy visit to the world’s ... More Information

New dates for SaMoTer

New dates for the trade fairs SaMoTer and Asphaltica that are to be held in Verona Italy have been announced. The two shows are being held at Veronafiere are for the construction equipment and the ... More Information

WTC 2021 - Call for Abstracts

WTC 2021 - Call for Abstracts

The World Tunnel Conference 2021 and associated events will be held between the 14th and 20th of May 2021 at the Bella Congress Center Copenhagen. Denmark and Scandinavia will present some of the ... More Information

History made as metro tunnelling complete under Sydney Harbour

New twin metro railway tunnels deep under Sydney Harbour are complete in a historic milestone – with all tunnelling now finished on the Sydney Metro City & Southwest project. Mega boring ... More Information

A3 Kerenzerberg tunnel update

A3 Kerenzerberg tunnel update

The A3 motorway section at the Kerenzerberg tunnel in the direction of Sargans has been in operation for over 30 years. In order to ensure road safety for the coming years and long-term operation, ... More Information

RFQs Issued for Tunnelling Works on Scarborough Subway Extension and Eglinton Crosstown West Extension

Infrastructure Ontario (IO) and Metrolinx have issued two Requests for Qualifications (RFQs) for advance tunnelling work on the Scarborough Subway Extension and the Eglinton Crosstown West Extension ... More Information

Update - Kommunarskaya Line in Moscow

On the 16/03/2020 construction of the tunnel between the Mamyri and Slavic World stations began for the new Kommunarskaya metro line. Mosinzhproekt JSC is the general designer and general contractor ... More Information

Robbins webinar

If you missed the Robbins webinar, No need to worry, you can watch an on-demand recording of their event on Big Data: Technology for Efficient TBM Tunneling please click here for further ... More Information

MineArc - Custom Refuge Chamber Strengthens Safety on Small TBM

Designing a refuge chamber to fit a 4.4m diameter tunnel boring machine with limited gantry space. Learn about the custom engineering that went into building two 10-person, 24-hour TunnelSAFE refuge ... More Information

Moscow - Western Section, Big Circle Line (BCL) launches TBMs

Moscow - Western Section, Big Circle Line (BCL) launches TBMs

On 25/02/2020  two TBMs (10 m diameter)  were simultaneously launched on the western part of the Big Circle Line (BCL) in Moscow. The TBMs will be driving two double track tunnels, TBM ... More Information

First TBM reaches De Amicis Station in Milan

On the 04/03/2020 the first TBM, involved in the construction of the tunnel for the central section of the M4 line in Milan arrived at the De Amicis station. The TBM averaged 25m/day and has now ... More Information

Events postponed

The following events have been postponed -  1. The Fehmarn Link Business Conference, which should have been held at Lalandia in Rodbyhavn on March 12, has been postponed to a later date. ... More Information

LA Regional Connector Transit Project Updates

LA Regional Connector Transit Project Updates

When the Regional Connector project is completed, three Metro light rail lines — the A (Blue), E (Expo) and L (Gold) — will finally be joined together via two 1.9-mile twin tunnels ... More Information

Robbins Main Beam overcomes Obstacles in Guangxi Province

Robbins Main Beam overcomes Obstacles in Guangxi Province

Tough TBM breaks through after navigating Faults, Karst, and More - In January 2020, a Robbins 5.97 m (19.6 ft) diameter Main Beam TBM cleared its final hurdle when it broke through in Guangxi ... More Information

City Rail Link project - Tunnelling starts in 2021

The TBM for the City Rail Link project awarded to Link Alliance, a group of 7 companies ,  is due to arrive in Auckland next spring. It will bore twin tunnels under the city centre. The $13 ... More Information

TERRATEC EPBMs gear up for new Istanbul Metro line

TERRATEC EPBMs gear up for new Istanbul Metro line

Gulermak, Nurol & Makyol JV is currently completing TBM testing on-site for the new Ümraniye-Ataşehir-Göztepe line, the latest addition to Istanbul’s metro ... More Information

Breakthrough on Halkali-Istanbul Airport Metro Line

On the 29/02/2020 the TBM EPB S50 built by Terratec broke through at Arnavutkoy-1 station after excavating 1551 metres. The work is part of the new Halkali-Istanbul Airport Metro Line. The 31km-long ... More Information

Samoter 2020 Postponed until May

SaMoTer, the international construction equipment trade fair, scheduled for the  21-25 March will now be held between the 16-20 May 2020. Asphaltica, the road infrastructure event to be held ... More Information

Tunnelling News

What happens to our metro tunnel boring machines when they hit the end of the line?

These mechanical behemoths were Betty and Dorothy, the tunnel boring machines tasked with digging the Sydney Metro West tunnels. Loading. The ... More Information

The incredible £2.8bn underwater tunnel connecting Europe and Asia

A huge new tunnel will connect Europe and Asia - and construction has already started. The Great Istanbul Tunnel is a major project. It will carry ... More Information

China develops "smart brain" for tunnel boring machines to boost underground construction

A team from Hunan University in central China has collaboratively developed an intelligent operating system for tunnel boring machines, giving these massive underground giants a "smart ... More Information

How China rescued highway project under Yangtze River

The incident occurred in February 2023 during construction of the 6.4-kilometer Jiangyin–Jingjiang Yangtze River Tunnel. Midway through excavation, at ... More Information

HS2 final tunnel drive to Euston starts next week

A team from SCS will drive a 4.5-mile twin-bore tunnel linking Old Oak Common to Euston using two tunnel boring machines, Karen and Madeleine. More Information

Work begins on £48M Knutsford sewer upgrade featuring 1.8km stormwater tunnel

Sean Reid, United Utilities county business lead for wastewater in Cheshire said: “This project highlights our ongoing commitment to improving water ... More Information

$14.6M boost moves Gering–Fort Laramie Canal Tunnel project forward

After nearly six years of planning, construction is moving forward on the Gering–Fort Laramie Canal tunnels... More Information

Webuild: second breakthrough at Trebisacce Tunnel along Jonica State Road 106

Project will help transform Jonica State Road 106 into a strategic corridor linking Ionian coasts of Calabria, Basilicata and Puglia... More Information

Ground preparation for Lower Thames Crossing tunnelling

Work is ongoing to overcome sub-optimal ground conditions in preparation for the start of tunnelling on the Lower Thames Crossing in late 2028, according to the project’s tunnels director... More Information

LA Metro approves massive $25B underground rail line to bypass 405 Freeway

The LA Metro Board unanimously approved an underground heavy rail line to connect the San Fernando Valley and the Westside, bypassing the congested 405 Freeway. The nearly 13-mile route, ... More Information

TUNNEL VISION Mega £7.4bn undersea tunnel connecting two CONTINENTS just got one step closer

A MAJOR £7.4 billion underwater tunnel connecting two continents has taken a step closer to construction. Experts have said the 24-mile tunnel is “technically viable”, paving the way for ... More Information

TBM breakthrough in Sydney

Tunnel boring machine (TBM) Jane Starkey successfully completed her 1.2km underground journey through challenging Sydney sandstone... More Information

Hochul announces $25 million for Harlem crosstown subway tunnel design

At E. 120th St., a pair of tunnel-boring machines — currently under construction in Germany — will bore new, 8,400-foot tunnels north from the end ... More Information

Tunnelling under the Yarra River

Our two Tunnel Boring Machines (TBMs) will soon be travelling underneath the Yarra River... Approximately 300 metres of the 6.5 kilometre North East Link will be under the Yarra ... More Information

The Boring Company says its tunneling machine is 'ready to mine in Nashville'

The Music City Loop project is aimed at transporting people from Nashville International Airport to Lower Broadway in roughly 10 minutes. By Li ... More Information

Norway Is Building the World's Longest and Deepest Tunnel Beneath the Sea

The Rogfast project, short for Rogaland Fixed Link, is an underwater road tunnel being built beneath Norway's fjords as part of the E39 coastal ... More Information

Future engineers become 'TBM Captains' for Suburban Rail Loop

Tunnel Boring Machines (TBMs) that will begin work this year. The tour of the eastern tunnel entrance was part of a long-term initiative, with ... More Information

Image gallery: Civil works completed on HS2's longest tunnel

Main construction on the Buckinghamshire structure began in May 2021 with the launch of two 2,000-tonne tunnel boring machines (TBMs), named Florence ... More Information

The Boring Company Launches Free Tunnel Contest: AI Applications for Smart Infrastructure

According to Sawyer Merritt on Twitter, The Boring Company has announced a contest to build a one-mile tunnel for free, inviting proposals for ... More Information

Out of sight: spectacular HS2 tunnels offer glimmer of hope for stalling project

Despite much soul-searching over UK’s inability to build infrastructure, two sections of HS2 under Chilterns are being hailed for their engineering... More Information

HS2 January 2026 update

We’re making progress building the main infrastructure for the new line. We’ve completed 80% of tunnelling and are working on major bridges, viaducts and embankments, and HS2’s new ... More Information

Implenia Secures EUR 350 Mln Projects For Bridges, Tunnel Works In Germany

Tunnel to join motorway sections and connecting roads. The Swiss construction and real estate company said the Peene Bridge project in Wolgast, ... More Information

Incredible new $7.9bn mega rail and road tunnel to be the world's longest

The safety of our workers is of utmost importance during the construction of the Fehmarn Belt Tunnel. We will await the findings of the ... More Information

TBM launch from Rukanpura soon as metro work gains pace

The tunnel boring machine (TBM) for the underground network is likely to be launched from Rukanpura on Bailey Road, which falls under Corridor I ... More Information

World's largest-diameter boring machine used for Yangtze River railway tunnel

China's domestically developed, world's largest-diameter vertical shaft boring machine 'Qiming' was officially put into operation in Taicang City ... More Information

HCMC approves sea-crossing route with undersea tunnel between Can Gio and Vung Tau

Ho Chi Minh City has approved a strategic proposal by Vingroup to construct a direct sea-crossing road connecting the Can Gio coastal urban area with Vung Tau beach town, cutting travel ... More Information

Changi Airport’s new underground link to take passengers from future T5 to T2 in 4 minutes

SINGAPORE – Passengers at the future Changi Airport Terminal 5 can expect to reach Terminal 2 in four minutes via the airport’s new underground link... More Information

SRL inspires TBM Captains - Victoria's Big Build

Tunnel Boring Machine (TBM) Captains. When SRL East opens in 2035 ... Construction of SRL East is powering ahead, with more than 3000 people ... More Information

Beneath winter's fjords: 17 miles of rock, 1300 ft deep

Rogfast tunnel construction beneath Norway's winter fjords, 17 miles long and 1,300 feet deep,. Credits: Ground Engineering. For years, the E39 ... More Information

Massive Sinkhole Opens Near $26 Billion Tunnel Project in Melbourne

A massive sinkhole has suddenly opened up in Melbourne near a major highway tunnel construction site, sparking safety fears and halting ... More Information

The world's longest expressway tunnel: China's Tianshan Shengli Tunnel

At the same time, the project also implemented China's first 'three-tunnel parallel construction' plan, which increased the number of workfaces. At ... More Information

'Not really where you want to be': Ground preparation for Lower Thames Crossing tunnelling

The Lower Thames Crossing is a major new road and tunnel project in the UK, intended to alleviate congestion at the Dartford Crossing and enhance. More Information

Funding problems affect metro line extensions

In the Athens metropolitan area, construction of Line 4 is continuing, with the Avax-Ghella-Alstom consortium saying the two tunnel-boring machines ... More Information

Transport Minister inspects progress on Cairo Metro Line 4 phase one

Four tunnel boring machines (TBMs) are in operation—two in each direction. According to the project timeline, the first TBM has reached the Grand ... More Information

Here's what happened with Toronto's Scarborough Subway Extension in 2025

SSE tunnelling, which began in January 2023, is being carried out with the largest tunnel boring machine (TBM) ever used on a Canadian transit project ... More Information

NHAI connects Tunnel No. 4 on Shimla bypass

NHAI PIU Shimla Project Director Anand Kumar, Bharat Construction ... The tunnel was constructed using the New Austrian Tunnelling Method (NATM) ... More Information

Mumbai-Ahmedabad Bullet Train Update: Palghar Tunnel Breakthrough Achieved

NHSRCL Bullet Train Project | India First Bullet Train Update: Last year, the Ministry of Railways achieved a breakthrough in the construction of ... More Information

Main tunnel works connecting future Changi Airport T5 to existing T2 completed

Main tunnel works connecting the future Terminal 5 to the existing Terminal 2 are completed, as the Changi East development gathers pace... More Information

Testing completed on Hudson River Tunnel boring machines

The project calls for construction of 9 miles of passenger-rail track between New York ... More Information