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

British Tunnelling Society Conference & Exhibition 2026 Returns to London

British Tunnelling Society Conference & Exhibition 2026 Returns to London

The British Tunnelling Society Conference & Exhibition 2026 will take place on 6–7 October 2026 at the QEII Conference Centre in Westminster, London. Recognised as the UK tunnelling ... More Information

Switzerland - N02 Belchen Tunnel – Second Rehabilitation

The Belchen Tunnel system forms part of the N02 motorway, one of Switzerland’s most strategically important north–south transport corridors. The original eastbound and westbound ... More Information

China Deploys “Underwater Space Station” to Overcome Hyperbaric TBM Challenge on Jintang Subsea Tunnel

China has reported a significant technical breakthrough during construction of the Jintang Subsea Tunnel, part of the Yongzhou high-speed railway, with the successful deployment of a domestically ... More Information

Momentum Builds Underground at the Ellicott City North Tunnel Project

Work on the Ellicott City North Tunnel Project in Howard County, Maryland is advancing toward a key transition point as the team prepares for tunnel boring machine (TBM) assembly following recent ... More Information

Investing in the Future of Tunnelling at NAT 2026

The North American Tunnelling Conference (NAT 2026), hosted by the Underground Construction Association (UCA), will take place in Anaheim, California, from 15–18 June 2026. In addition to its ... More Information

Project Status Update – Europe–Africa Undersea Rail Tunnel

Overview - A long-discussed fixed-link rail tunnel beneath the Strait of Gibraltar—intended to connect southern Spain with northern Morocco—has made recent progress toward ... More Information

Major Tunnelling Projects Involving Tutor Perini: Status Update for Tunnelbuilder readers

Tutor Perini, working through its subsidiary Frontier-Kemper Constructors and in joint venture with Frontier-Kemper, is playing key roles in two significant tunnelling projects in the United States: ... More Information

TERRATEC TBMs complete Bangkok Water Transmission Tunnel Drives

TERRATEC TBMs complete Bangkok Water Transmission Tunnel Drives

Two TERRATEC EPB TBMs complete over 5km of challenging urban tunnelling beneath Bangkok to advance the city’s major water transmission upgrade. TERRATEC earth pressure balance TBMs have ... More Information

Libby’s Cutterhead Arrives: Ontario Line Tunnelling Enters Its Next Phase

Libby’s Cutterhead Arrives: Ontario Line Tunnelling Enters Its Next Phase

TBM Libby’s cutterhead has officially arrived on site, marking a decisive step toward launching tunnelling beneath downtown Toronto. The cutterhead—Libby’s most recognisable and ... More Information

EUR 190 Million Consultancy Contract Awarded for Norway’s Arna–Stanghelle Mega‑Project

The Norwegian Public Roads Administration (Statens vegvesen) and Bane NOR have awarded what is described as the largest consultancy framework agreement in Norway’s history to the Norconsult ... More Information

Update - Mixshield TBM arrives at Tilbury for National Grid’s Grain to Tilbury Thames Cable Tunnel

The Herrenknecht Mixshield TBM built in Schwanau, Germany for National Grid’s Grain to Tilbury project has arrived in Tilbury, UK—marking the transition from factory readiness to site ... More Information

Project Overview — Southampton Link Main (SLM)

Southern Water is delivering the Southampton Link Main, a major new underground drinking water pipeline project in Hampshire, UK, to reinforce regional water supply resilience. The scheme ... More Information

TfL Launches Market Engagement for DLR Thamesmead Extension Project

Transport for London (TfL) has formally begun Preliminary Market Engagement (PME) for the proposed Docklands Light Railway (DLR) Thamesmead Extension (TEX), a major infrastructure initiative aimed ... More Information

ITA Tunnelling Awards 2026

Event Overview -  The 12th edition of the ITA Tunnelling and Underground Space Awards will take place on 4 November 2026 in Lisbon, Portugal, with activities extending through 6 November 2026 ... More Information

Metro Line 4 milestone: TBM “Athena” arrives at Evangelismos

Athens Metro Line 4 has reached a defining construction milestone with the arrival of tunnel boring machine (TBM) “Athena” at the Evangelismos worksite. The breakthrough marks the ... More Information

ISAVET 2026 – Call for papers

21st International Symposium on Aerodynamics, Ventilation and Fire in Tunnels (ISAVET 2026) – Call for Papers | Abstracts close 17 February. The ATS is proud to support ISAVFT 2026, the ... More Information

Potomac River Tunnel Project: Tunnelling Activity Advances Near West Potomac Park

Washington, D.C. -  Work on the Potomac River Tunnel, a key component of DC Water’s Clean Rivers Project to drastically reduce combined sewer overflows (CSOs) into the Potomac River, ... More Information

TBM Completes Historic Breakthrough Beneath the Panama Canal

Panama City, Panama — The tunnel boring machine (TBM excavating the underground section of Panama Metro Line 3 has successfully broken through at the Balboa reception shaft after completing ... More Information

TBM Ready for Grand Paris Express Line 15 West, Lot 2

The Grand Paris Express continues to move forward with the Tunnel Boring Machine (TBM) designated to excavate the 7 km of tunnel for Line 15 West, Lot 2 which has successfully passed factory ... More Information

TBM Excavation Completed on Turkeys Sarıyer–Kilyos Tunnel

Excavation works on the Sarıyer–Kilyos Tunnel in Istanbul have reached a major landmark with the completion of TBM-driven tunnelling, marking one of the most significant achievements to date ... More Information

Mumbai–Ahmedabad Bullet Train: Undersea Tunnel Progress Dependent on Delayed Chinese TBMs

Work on India’s first high‑speed rail corridor continues to advance across multiple sections, but the most technically challenging component—the 21‑km underground tunnel in Mumbai, ... More Information

Tunnel Boring Machine ‘Noyyal’ Completes Breakthrough at Mandaveli on Chennai Metro Phase 2

Chennai Metro Rail Limited (CMRL) has achieved a significant milestone on Phase 2, Corridor‑3, with the downline Tunnel Boring Machine (TBM) Noyyal completing its breakthrough at the Mandaveli ... More Information

ISAVFT 2026 Call for Papers

Two weeks to go for the abstract submission deadline on 17th February! As the leading international forum for researchers, engineers and industry professionals, ISAVFT offers a unique platform to ... More Information

ITA WTC2026 EARLY BIRD RATE EXTENDED

ITA WTC2026 EARLY BIRD RATE EXTENDED

We’re excited to announce that Early Bird registration for ITA WTC2026 has been extended to 6 February 2026! Please note: the extended deadline applies only to participants and does not ... More Information

ELENG d.o.o. for advanced technical solutions

ELENG d.o.o. for advanced technical solutions

ELENG d.o.o. is a Croatian engineering and automation company based in Vinkovci, founded in 2018 to deliver advanced technical solutions across industrial sectors, including tunnelling ... More Information

TERRATEC TBM achieves breakthrough on Mumbai Sewer Tunnel Project

TERRATEC TBM achieves breakthrough on Mumbai Sewer Tunnel Project

TERRATEC’s 3.85m diameter Rock Slurry TBM achieves a key breakthrough on Mumbai’s MSDP Stage II Priority Sewer Tunnel 1. TERRATEC’s 3.85m diameter Rock Slurry TBM has achieved a ... More Information

Second Breakthrough Achieved at Trebisacce Tunnel

A major milestone has been reached on the Trebisacce Tunnel, the longest tunnel on the Third Mega Lot of the Jonica State Road (SS106) in Calabria. Webuild confirmed the second breakthrough, a key ... More Information

TfL Unveils Business Plan with Major Rail, Tunnel and Infrastructure Upgrades

Transport for London (TfL) has released its draft 2029/30 Business Plan, setting out a multi‑year investment programme aimed at modernising London’s transport network and accelerating delivery ... More Information

Next stop Euston. HS2 begins tunnelling to central London

Press release - In a crucial moment for the high-speed rail project, the Rail Minister, Lord Peter Hendy, and Chief Secretary to the Prime Minister, Darren Jones, turned on the 1,624-tonne machine ... More Information

Thames Water Opens £5.7bn White Horse Reservoir Procurement, includes Tunnelling Works

Thames Water has launched the search for a main works contractor to deliver the £5.7 billion White Horse Reservoir in Oxfordshire — a nationally significant scheme set to transform water ... More Information

TBM for National Grid’s Grain–Tilbury Thames Cable Tunnel Passes Factory Acceptance Testing

The Tunnel Boring Machine (TBM) that will excavate the new electricity cable tunnel beneath the River Thames for National Grid’s Grain to Tilbury project has successfully completed Factory ... More Information

2026 TAC Achievement Awards: Submissions Now OPEN!

2026 TAC Achievement Awards: Submissions Now OPEN!

TAC is proud to launch the call for submissions for its 2026 Achievement Awards, celebrating excellence in Canada’s tunnelling and underground construction industry, and beyond. Whether ... More Information

Robbins celebrates TBM acceptance for Ellicott City North Tunnel

Veteran TBM rebuild for major flood mitigation project - Robbins marked a major project milestone in October 2025 with the substantial completion of the factory acceptance test (FAT) for a ... More Information

Wilma TBM achieves breakthrough on Brenner Base Tunnel’s Pfons–Brenner section

The tunnel boring machine (TBM) Wilma has reached a major construction milestone on the H53 Pfons–Brenner section of the Brenner Base Tunnel (BBT), completing approximately 5 km of excavation ... More Information

HS2 completes civil works on Chiltern Tunnel

Civil engineering works have been completed on HS2’s Chiltern Tunnel, the longest tunnel on the UK high-speed rail project, marking a major milestone in the construction of the ... More Information

Safety: What We'll Do Differently In 2026

As we head into 2026, one thing is clear: Doing more of the same will not deliver different safety outcomes. Across the past year, the signals have been consistent — from incident ... More Information

Tunnelling News

Bengaluru: Four infrastructure firms bid for Hebbal short tunnel

Bengaluru infrastructure: Four firms, including Dilip Buildcon and Max Infra, bid for BDA's Rs 1086 crore Hebbal short tunnel project... More Information

TBM readied for Montreal's Blue Line extension

A custom-made 9.7m-diameter tunnel boring machine (TBM) has been assembled and lowered ready to excavate the tube from the future Vertières stop to ... More Information

$11.5B Brenner Base Tunnel Nears End of TBM Excavation

With TBMs Olga and Wilma closing in, the 55-km rail project shifts from excavation to systems integration ahead of its planned 2028 opening beneath ... More Information

$6.75 Billion Unlocked for Turkey's Bosphorus Rail Project

Multiple Earth Pressure Balance (EPB) Tunnel Boring Machines (TBMs) will need to be mobilized to carve out the subterranean corridors leading up to ... More Information

Tunneling for Nashville's underground Tesla project has begun

The Boring Company said that the first three weeks of the project will consist of the Prufrock-MB1, a machine that will help carve out the tunnel, ... More Information

Hudson Tunnel Project construction resumes

I look forward to celebrating the launch of our tunnel boring machines through the Palisades once GDC has assurance it will receive the steady flow ... More Information

Lower Thames Crossing

British suppliers could meet 90% of low carbon steel requirements. The proposed machine would be 16.4m in diameter, large enough to create a three‑lane tunnel bore, and is intended to dig ... More Information

Inside the Tunnel Boring Machine, Southampton Link Main project

A six-tonne tunnel boring machine is digging deep below the ground in Hampshire to help keep the county's taps and rivers flowing... More Information

TBM maestro inspects sites ahead of massive tunnel drive

The first machine components have arrived for the tunnel boring machines (TBMs) to be deployed on the Suburban Connect sites in Melbourne. More Information

Metrolinx provides major updates on subway and LRT projects across the GTA

Tunnel boring is advancing on multiple projects, with Scarborough's TBM ... Metrolinx says “Diggy Scardust,” the project's tunnel boring machine, is now ... More Information

Work in Progress: High-tech TBMs ready to carve underground corridor

The Bhopal Metro Rail Project is transitioning into its most challenging and sophisticated phase as two state-of-the-art Tunnel Boring Machines (TBMs) ... More Information

Sarens helps extract TBM at BC water supply project

The Annacis Water Supply Tunnel Project aims to increase the reliability and capacity of the water supply system in New Westminster, British Columbia. When complete, the tunnel will ... More Information

Judge rules in favor of New York and New Jersey for now in $16B tunnel fight with Trump

A federal judge ruled Friday to temporarily block the Trump administration from suspending federal disbursements for the Gateway Tunnel Project... More Information

Webuild: award for Sustainability Report for commitment to decarbonise through innovation

This includes the large tunnel-boring machines deployed on some of Europe's most complex projects: from the Salerno-Reggio Calabria ... More Information

Clearwater update reports initial entry area is 'stable and intact'

The tunnel boring machine being used in the project remains trapped underground just ahead of where the breach occurred. The ambitious, $630 ... More Information

Tunnel Boring Machine Market Size estimated at USD 7.08 Billion

The Tunnel Boring Machine (TBM) market is experiencing significant growth, driven by increasing urbanization, infrastructure development, ... More Information

Completing the First Section of Line 3: Tunnel Boring Machine Roars as it Emerges at Balboa

The Panama tunnel boring machine emerged and completed its first major task: the first section of the Line 3 Metro tunnel. More Information

Twin tunnel-boring titans prepare to dig new road under Sydney Harbour

Twin tunnel-boring titans are preparing to launch under Sydney Harbour to dig out a new road crossing from Birchgrove to Waverton... More Information

Monica Breaks Ground on Snowy 2.0

Monica the tunnel boring machine, with the renewable energy mega-project now more. TBM Monica is among the world's most advanced tunnel boring machines... More Information

Snowy 2.0 sets new tunnel boring machine to work, completes 46 underground concrete pours

Snowy 2.0 has set to work a fourth tunnel boring machine, a $75 million piece of drilling equipment purpose built to complete excavation of the huge pumped hydro project’s “geologically ... More Information

World's 'largest' underground assembly of tunnelling machines happening beneath Sydney

Workers are craning into place about 167 major pieces that will form the first of two giant boring machines. Once assembled like giant Meccano sets, ... More Information

Tunneling Begins on Major Water Pipeline for South Hillsborough

TAMPA, Fla. — Tampa Bay Water has begun construction on a major underground pipeline project aimed at meeting rising water demand in southern Hillsborough County, where population growth ... More Information

The massive £3billion tunnel designed to connect two continents under the sea

The construction of a huge underwater multi-tiered tunnel is underway in Turkey, that will create a direct route from Asia to Europe - and is expected to carry 1.3 million passengers a ... More Information

Riederwald Tunnel in Frankfurt is further delayed

Traffic was supposed to start flowing through the controversial Riederwald Tunnel in Frankfurt in 2033. But that's unlikely to happen. The €1.5 billion project is facing further delays – ... More Information

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