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

Manufacturing of First Pair of Tunnel Boring Machines for Hudson Tunnel Project Completed

The Gateway Development Commission (GDC) has reached a major milestone in the Hudson Tunnel Project (HTP) with the completion of manufacturing and factory acceptance testing of the first two tunnel ... More Information

California’s Delta Tunnel: Still Central to Water Debates in 2025

The Delta Conveyance Project — often called the Delta Tunnel — remains one of California’s most hotly debated infrastructure proposals. Though not yet under construction, it looms ... More Information

International heavyweights step in as Shetland fixed-link project advances

The Shetland Islands Council (SIC) has taken a decisive step forward in its ambition to improve inter-island connectivity by appointing three major international tunnelling and civil-engineering ... More Information

BART Silicon Valley Phase II: Tunnel Work On Track, On Budget

Construction of the second phase of the BART Silicon Valley Extension — the six-mile leg running from San Jose’s West Portal through downtown toward Berryessa — remains “on ... More Information

NCE - 2025 Tunnelling Awards

The tunnelling community gathered in London last week to celebrate another year of technical excellence, creative problem-solving and sector-wide collaboration at the NCE Tunnelling Awards ... More Information

Shetland Tunnel link

The Shetland tunnel link project is currently in the modelling and feasibility stage, with three international tunnelling companies appointed in early December 2025 to assess the potential for fixed ... More Information

Lower Thames Crossing update

The Lower Thames Crossing (LTC) is a major new road and tunnel project that will create a new road link beneath the River Thames, connecting Kent in the south with Essex and Thurrock in the north. ... More Information

Breakthrough for the Toulouse metro Line C in France

On Wednesday, November 26, at 10:00 a.m., the TBM Lise Enjalbert, after travelling 920 m from the shaft of the future Ponts Jumeaux station, where it began in December 2024, broke through the ... More Information

TERRATEC TBM Achieves Outstanding Progress on CIDCO Water Tunnel Project in Mumbai

TERRATEC TBM Achieves Outstanding Progress on CIDCO Water Tunnel Project in Mumbai

TERRATEC’s T83B Open TBM is delivering strong and consistent results on the CIDCO Long Treated Water Tunnel Project in Mumbai, India. Since its launch, the machine has maintained steady ... More Information

Budget 2025 confirms DLR extension to Thamesmead

The UK government welcomes confirmation that London will deliver the Docklands Light Railway (DLR) extension to Thamesmead. The GBP1.7 bn project will be funded through Transport for London (TfL) ... More Information

STM participated in STUVA Conference & Expo 2025

STM participated in the STUVA Conference & Expo 2025, an international benchmark event for underground infrastructure and major construction projects. More Information

TBM excavation for the Bisagno Flood relief tunnel in Italy begins

The TBM Dalia (110-meter-long and 1,280-ton weight)  arrived from China a few months ago and has been assembled in the launch chamber and began excavatiosn for the Bisagno flood diversion ... More Information

India/Kerala - Fort Kochi-Vypeen undersea tunnel

India/Kerala - Fort Kochi-Vypeen undersea tunnel

The Kerala state government is expected to soon invite expressions of interest (EOI) for the construction of the Vypeen-Fort Kochi undersea tunnel connecting Vypeen and Fort Kochi as part of the 48 ... More Information

Supplier Industry Day for the (DLR Thamesmead Extension Programme (TEX) in the UK

Transport for London (TfL) has published a Preliminary Market Engagement (PME) notice for the Docklands Light Railway (DLR) Thamesmead Extension Programme (TEX). The intention is to establish ... More Information

Sweden - Invitation to Procurement Strategy Conference for the Lindholm Connection project, Gothenburg

Background - The Lindholm Connection project, which is part of the Tram and city bus Brunnsbo - Linné via Lindholmen program, is part of the strategic plan to build an inner ring road for ... More Information

First kilometre of the Turin Middle Collector completed

On 13 November, the Mix Shield TBM Gaia (4.08 m diameter, 163 m long) reached its first kilometre for the construction of the main tunnel of the Turin Middle Collector, a strategic infrastructure ... More Information

Sydney Metro West tunnel borers dig deep under Darling Harbour

TBMs Jessie and Ruby have passed the deepest point below Darling Harbour, located about 35-m beneath the water’s surface, as they continue to carve out the Sydney Metro West line that once ... More Information

Austria – The Feldkirch Urban Tunnel Project

Austria – The Feldkirch Urban Tunnel Project

The Feldkirch urban tunnel will consist of four branches – Felsenau (893 m), Tisis (1,598 m), Tosters (903 m) and Altstadt (289 m) – connected by a central underground roundabout with a ... More Information

United States – Scenario 1 for Phase II of the BART Silicon Valley Extension

At the special meeting held on October 17, 2025, the Board of Directors of the Santa Clara Valley Transportation Authority (VTA) - after hearing the presentation of the peer review conducted by ... More Information

Leucosia and Ligea: the names chosen for the new TBMs on the Salerno–Reggio Calabria High-Speed Line

The contest launched to choose the names of the two new TBMs that will excavate Lot 1A Battipaglia–Romagnano of the new Salerno–Reggio Calabria High-Speed Line concluded on November 7. ... More Information

New progress on works between Apice and Hirpinia in Italy

Work continues on the new Naples–Bari High-Speed/High-Capacity (HS/HC) railway line, part of the Trans-European Transport Network (TEN-T) Scandinavian–Mediterranean Corridor. The future ... More Information

Celebrations for the completion of the main tunnel excavations in Lot H41 Gola del Sill–Pfons

On November 11, a celebration was held at the segment factory of the BBT Gola del Sill–Pfons construction site to mark the completion of the main tunnel excavation works for the Austrian Lot ... More Information

Italy - Public contest launched to name two TBMs for Lot 1A of the new AV/AC Salerno-Reggio Calabria line

Now open a public contest to choose the names of the two TBMs that will soon start excavating two tunnels on Lot 1A of the Salerno-Reggio Calabria high-speed railway. The project is being carried ... More Information

Renovation of the Engelberg Tunnel update

The Autobahn GmbH’s Southwest branch is undertaking a major structural and operational renovation of the Engelberg Tunnel on the A81 motorway near Leonberg in Baden-Württemberg, Germany. ... More Information

Italy - Breakthrough in the La Rossa tunnel on the Orte-Falconara line

Italy - Breakthrough in the La Rossa tunnel on the Orte-Falconara line

On 30 October 2025, excavators demolished the diaphragm of the 1196 m-long La Rossa tunnel in Genga (Ancona), part of the underway upgrading of the Orte-Falconara line, lot 2 Genga-Serra San ... More Information

Romania - TERRATEC TBM EPB Advances on Bucharest Metro Line 6 – South Section

Romania - TERRATEC TBM EPB Advances on Bucharest Metro Line 6 – South Section

TERRATEC reports steady progress on the Magistrala 6 Metro Project (M6) in Bucharest, where TERRATEC S67 TBM EPB is advancing through challenging sandy ground as part of the South Section: 1 Mai ... More Information

Major milestones with mega machine on the move to deliver non-stop South Road

Major milestones with mega machine on the move to deliver non-stop South Road

The River Torrens to Darlington (T2D) Project is celebrating two giant milestones in the $15.4 billion delivery of a non-stop South Road, with the successful transfer of the largest individual ... More Information

Norway - Tender procedure continues for the Stad Ship Tunnel

On 10 October, as part of the national budget proposal for 2026, the Norwegian government announced that works on the Stad Ship Tunnel would be suspended, but following the debate on 14 October the Norwegian Parliament asked the government to allow the Norwegian Coastal Administration to continue negotiations with the three bidders. More Information

TBM Emily Passes Key Factory Test for DC Water Potomac River Tunnel Project

Emily, the Potomac River Tunnel Project's final TBM, has successfully completed its factory acceptance testing. More Information

Major works underway at SRL Burwood, Australia

Contractor Laing O’Rourke recently completed site preparation works, which included moving underground services to make way for the twin tunnels and new Burwood underground station and ... More Information

Brazil - Progress on São Paulo’s metro line 2-Green

Brazil - Progress on São Paulo’s metro line 2-Green

Southern section of the Consolação tunnel excavation completed - the Conexão Paulista/Consolação CTS consortium - formed by Constran, Telar, and Sprail - has ... More Information

Switzerland - FOT Approves Expansion of the Zurich -Winterthur Railway Corridor

Switzerland - FOT Approves Expansion of the Zurich -Winterthur Railway Corridor

The Federal Office of Transport (FOT) has granted planning approval for the construction of additional infrastructure between Zurich and Winterthur. As the current Zurich - Winterthur line via ... More Information

France - Two breakthroughs for the Toulouse metro Line C!

On Monday, September 29th, at approximately 4:00 PM, the TBM Berthe de Puybusque achieved its first breakthrough at Fondeyre Station. Having traversed over 1 km from the future La Vache-Le Grand ... More Information

HS2 celebrates final Birmingham tunnel breakthrough

This morning at Washwood Heath the125-m-long TBM Elizabeth - launched in March 2024, near the Warwickshire village of Water Orton - brokethrough the 3.5-mile-long Bromford tunnel marking the completion of major tunnel excavation between London’s Old Oak Common and the West Midlands. More Information

First TBM on its way to Adelaide for the River Torrens - Darlington (T2D) project

First TBM on its way to Adelaide for the River Torrens - Darlington (T2D) project

The River Torrens to Darlington (T2D) Project has achieved a major milestone in its delivery of a non-stop South Road, with the first of three TBMs beginning its journey to Adelaide. The first TBM ... More Information

Inauguration of the Excavated Material Treatment Plant for CO11

Inauguration of the Excavated Material Treatment Plant for CO11

On October 9, 2025, TELT and the consortium GEME LT (Gestion et Emploi des Matériaux d’Excavation LYON TURIN), composed of Eurovia Alpes Agence de Savoie (lead company), ... More Information

Tunnelling News

SRL East TBMs arrive in Burwood

Two more tunnel boring machines (TBMs) have arrived in Melbourne ready for tunnelling of Suburban Rail Loop (SRL) East to start this year. The TBMs ... More Information

$100 Million Allocated for Ft. Laramie Canal Tunnel Project

Laramie Canal Tunnel Project. The Department of the Interior announced the funding Tuesday as part of the $889 million for water infrastructure ... More Information

What are the benefits of using tunnel boring machines in infrastructure projects?

Ask NCE has been updated to Answers 3.0, allowing you to ask civil engineering-focused questions and receive clear, practical responses such as ... More Information

Minsk Metro, together with "Alesya," will start digging with "Mariya."

It was noted on a transport forum that parts of a second tunnel boring machine (TBM) for laying tunnels began to be brought to one of the construction sites of the third metro line... More Information

TBM for Lyon-Turin project unveiled

The first of two tunnel boring machines for the Italian section of the 57.5km Mont Cenis Base Tunnel has been unveiled... More Information

NFR achieves breakthrough in Tunnel No 8 of Sivok–Rangpo railway project

Tunnel No. 8 is one of the major tunnels of the project with a total length of 4.148 km and an additional adit measuring 1.010 km. The excavation and ... More Information

Suburban Rail Loop hits tunnelling milestone as eight TBMs arrive on site

The Suburban Rail Loop has reached a major construction milestone, with eight tunnel boring machines now on site ahead of tunnelling later this year... More Information

$16bn Hudson Tunnel project could pause again 'in two to three months'

Components of the first tunnel boring machine (TBM) that will be used for the Palisades Tunnel Project arrived at ... More Information

Hinkley Point C | TBM readied for 620m long fish return tunnel

The tunnel boring machine (TBM) that will excavate the fish return tunnel has been christened Sarah Guppy by local schoolchildren, in tribute to ... More Information

Bhopal Metro's Orange Line Tunnelling Begins

The Bhopal Metro project has recently reached an important milestone as tunnel boring machines (TBMs) have been positioned to begin digging work on ... More Information

A Chinese team rescued a $50M tunnel machine stuck 177 feet underground

Chinese engineers have pulled off a stunning rescue, saving a tunnel boring machine (TBM) stuck 177 feet underground beneath the Yangtze River. More Information

Fort Smith named finalist in Elon Musk's Boring Company tunnel challenge

The company selected Fort Smith's proposal from 487 applicants. The company says the winning project will receive construction of a one-mile tunnel ... More Information

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