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Italy/Liguria - Services Conference on the final design for the doubling of the Genoa-Ventimiglia railway line: Finale Ligure – Andora section

On 8 September 2025 at 3 p.m, a Services Conference will be held for the purpose of examining the final design for the doubling of the Genoa-Ventimiglia railway line: Finale Ligure – Andora ... More Information

NYMTA Awards $1.97 Billion Contract for Second Avenue Subway Phase 2 Tunnelling Works

The New York Metropolitan Transportation Authority (NYMTA) has awarded a $1.972 billion contract to Connect Plus Partners—a joint venture of Halmar International and FCC Construction—to ... More Information

TERRATEC TBM commences excavation on Bangkok MRT Purple Line

TERRATEC TBM commences excavation on Bangkok MRT Purple Line

TERRATEC is pleased to announce that its Earth Pressure Balance Tunnel Boring Machine (EPBM), TERRATEC S114, has commenced excavation on Contract 3 of the MRT Purple Line (Tao Poon – Rat ... More Information

Heathrow’s Expansion Hinges on M25 Tunnel Engineering

The expansion of Heathrow Airport has once again brought the spotlight onto one of the most complex tunnelling proposals ever considered in the UK: the realignment of the M25 motorway through a ... More Information

Breakthrough for the Lower Olentangy Tunnel Project in USA

Breakthrough for the Lower Olentangy Tunnel Project in USA

The Herrenknecht TBM EPB named “The Mighty Quinn” arrived at its destination in early August after boring a total of 5.64km under the city of Columbus, Ohio, USA. For the Lower Olentangy ... More Information

The fourth Snowy 2.0 TBM shipped to Snowy Mountains

Snowy Hydro is now preparing for the arrival of its fourth TBM to join Snowy 2.0 – Australia’s largest renewable energy project.  The new TBM - 178-m length and 11.86 m diameter - ... More Information

Canada - Breaking ground on second Ontario Line tunnel launch shaft

Canada - Breaking ground on second Ontario Line tunnel launch shaft

Metrolinx is creating a second tunnel launch shaft near Gerrard Street and Carlaw Avenue which is now under construction. This will serve as the starting point for the second underground section of ... More Information

Veidekke Secures Final Tunnel Contract for Gothenburg’s West Link Project

Scandinavian construction powerhouse Veidekke ASA has officially been awarded the contract section of Gothenburg's ambitious West Link (Västlänken) rail project. Project Overview Scope: ... More Information

Central Romania: Cluj-Napoca Metro Project Moves into Underground Construction Phase

Work on Romania’s second metro network, in Cluj-Napoca, has entered a key new stage with the start of excavation for the tunnel boring machine (TBM) launch shaft.  Turkish general ... More Information

Underground Engineering in the Spotlight 1-3 October, Belgrade, Serbia

Serbian Association for Tunnels and Underground Structures in collaboration with the International Tunnelling and Underground Space Association will  host the Southeastern ... More Information

North End Connectors Awarded C$1.4B Contract for Yonge North Subway Extension Tunnelling

On August 6, 2025, Infrastructure Ontario (IO) and Metrolinx awarded North End Connectors a fixed-price C$1.4 billion contract to design, build, and finance the advance tunnelling phase of the Yonge ... More Information

Canyon Tunnel Project: A New Lifeline in the Central Valley

Overview & Purpose - The Canyon Tunnel Project is a major $84 million regional water infrastructure initiative carried out by the South San Joaquin Irrigation District (SSJID) in partnership ... More Information

Vietnam - Breakthrough of TBM Than Toc for Hanoi's Pilot Light Metro Line

Vietnam - Breakthrough of TBM Than Toc for Hanoi's Pilot Light Metro Line

On July 28, 2025 at 10h20 a.m.,  TBM n.1 named Than Toc (Lightning speed) - designed and manufactured by Herrenknecht, over 100 m length and 850 t weight -  successfully completed its ... More Information

Australia - New Sydney Metro West Updates

Australia - New Sydney Metro West Updates

TBMs Dorothy and Betty power into Parramatta Tunnelling for the Sydney Metro West project is nearly 90% complete, with the arrival of two TBMs at Parramatta’s metro station site. This marks a ... More Information

France – Breakthrough of the Marguerite de Catellan TBM at the Cote Pavee station on Toulouse Line C!

France – Breakthrough of the Marguerite de Catellan TBM at the Cote Pavee station on Toulouse Line C!

On Thursday 24 July, the TBM Marguerite de Catellan broke through at the future Côte Pavée station, Lot 4 of Toulouse Line C: click here for the video. The TBM - launched in ... More Information

HS2 lifts third giant TBM in London after 5.47 km (3.4-mile) underground journey

On Saturday 26th July, the team working on the HS2 project lifted the TBM Emily's 9.11m diameter cutterhead, front and middle shield, weighing 880 t, using a large gantry crane, at the Green Park ... More Information

Production of segments completed in Ahrental for the Austrian H41 construction site of the Brenner Base Tunnel

Production of segments completed in Ahrental for the Austrian H41 construction site of the Brenner Base Tunnel

On Saturday 19 July, production of the precast concrete segments used by the TBMs for the final lining of the line tunnels were completed at the Ahrental plant located  near the Austrian H41 ... More Information

Delhi Metro Rail Project update

The Delhi Metro Rail Project marked another significant milestone as Afcons Infrastructure’s Tunnel Boring Machine (TBM) Disha (1264B) achieved a breakthrough at the Tughlakabad Railway Colony ... More Information

Ontario Line - Name the first two TBMs

Be part of transit history! Here’s your chance to make your mark on Toronto’s newest subway line. The first two TBMs have arrived in Canada. They will dig the tunnels in the southern ... More Information

ITA Awards 2025 Finalists Announced

After rigorous adjudication by the Panel of Judges, the Finalists of the 2025 series of the ITA Tunnelling Awards has been announced. From a short list of 51 entries from 27 ... More Information

TBM replaced by traditional method on a 500 m section on the south side of Second Gotthard tunnel

In February 2025, excavation work began on the construction of the second tube of the Gotthard motorway tunnel. While the TBM on the north side is progressing steadily, on 23 June 2025 it was ... More Information

Italy - Gran Sasso Tunnel: measures to accelerate upgrading activities

The green light has been given for work on the Gran Sasso Tunnel to begin. They had needed to comply with current technical regulations on the tunnels safety in the trans-European road network ... More Information

Construction Begins on Cross Island Line Phase 2

The Land Transport Authority (LTA) has commenced civil construction works for Phase 2 of the Cross Island Line (CRL). Acting Minister for Transport Jeffrey Siow officiated the ground-breaking ... More Information

First Scheldetunnel Element Successfully Immersed in Antwerp

DEME Group has announced a major milestone in the construction of the Scheldetunnel, part of the Oosterweel Link in Antwerp. The first of eight prefabricated tunnel elements has now been ... More Information

Underground Breakthrough for €114M Athlone Drainage Project

The €114 million Athlone Main Drainage Scheme has recorded a successful breakthrough on its second underwater tunnel beneath the River Shannon—marking a significant milestone in the ... More Information

Torrens to Darlington Project Update

ADELAIDE, SA — July 2025: The Torrens to Darlington (T2D) Project continues to gain momentum, with June marking a month of significant progress across several key construction sites. As South ... More Information

Bhopal Metro Rail Project

The Bhopal Metro Rail Project has marked a significant milestone with the successful completion of the Factory Acceptance Test (FAT) for its first tunnel boring machine (TBM), designated TBM 427. ... More Information

Europe’s Largest Road Tunnel: The Lower Thames Crossing

Preparatory work for the Lower Thames Crossing—the future title-holder of Europe’s largest road tunnel—is slated to begin in late 2025 Project Overview Tunnel length: 2.6 ... More Information

Rome metro line C - Executive design of section T2 gets underway

With Ordinance N. 10 from the 27 June 2025, the Special Commissioner approved the final design for the 4km section T2 of Line C, involving the construction of four new stations (Chiesa Nuova, San ... More Information

Last Chance Grade Project - California

Caltrans District 1 announced a USD 40 million allocation toward the design phase of the Last Chance Grade Project along U.S. Highway 101 south of Crescent City in Del Norte County. This funding ... More Information

HS2 completes excavation of the Norton tunnel under London

HS2 completes excavation of the Norton tunnel under London

Excavation of the  twin-bore Northolt tunnel between West Ruislip at the outer edge of the capital and the new Old Oak Common super-hub station in west London has been completed. On 26th June ... More Information

ITEC 2025 - Highlighting Advanced Trenchless Technologies for Saudi Arabia’s Infrastructure Transformation

The International Trenchless Exhibition & Conference (ITEC) 2025 officially commenced on 23 june at the Jeddah Hilton. More Information

TBMs resume digging North East Link tunnels in Australia

Gillian and Zelda, the two massive TBMs building Victoria’s longest road tunnels are back in action, relaunching from Lower Plenty Road to continue their journey towards Bulleen as part of the ... More Information

Swiss Tunnel Day 2025

Starting in 2024, the Swiss Tunnel Congress (STC)—Switzerland’s premier event for underground construction—will be held exclusively in even-numbered years. To maintain momentum in ... More Information

Turin/Lyon - Open days on the construction site to discover the TBM Viviana

Less than a year after the previous open day organised at the entrance to the base tunnel on the French side, TELT once again welcomed the public on the 14 and 15 June 2025, this time at the ... More Information

Government Injects £590 Million into Lower Thames Crossing

A Crucial Boost to Britain’s Largest Road Tunnel Project -  On 16 June 2025, Chancellor Rachel Reeves confirmed an additional £590 million funding boost for the Lower Thames ... More Information

Tunnelling News

$676 million underwater tunnel for India

The project is expected to cost around $676 million, with a Detailed Project Report (DPR) having now been completed. India's road transport network is ... More Information

€1.4 billion Belgian tunnel project approved

The first phase of the €1.4 billion project for Belgium’s new Limburg Noord-Zuid link has been approved. Construction should commence in 2027 on the project, which will form a section of ... More Information

Tunnel boring machine S-639B achieves breakthrough under Kanpur Metro Phase I Project

The package KNPCC-06 involves design and construction of a tunnel through TBM, cut and cover tunnel, underground ramp from Kanpur Central end of ... More Information

Lawmakers propose construction of undersea tunnel to link Luzon and Visayas

Several lawmakers from the Visayas region are proposing the construction of an underground tunnel that will serve as a permanent land connection ... More Information

Oman-UAE rail project hits major milestone with start of tunnel excavation

Tunnel excavation has begun in Oman's Al Hajar Mountains, marking a major milestone for the cross-border Oman-UAE Railway... More Information

Engineering the depths: innovative tunnelling for hydropower projects

Major schemes in Austria, China, and Germany are applying advanced underground construction techniques for hydropower projects. More Information

New tunnel, new standard: Silvertown project showcases innovation in surface protection

Originally approved in 2018, construction of the tunnel began in March 2021. In September 2023, following the completion of tunnelling works, ... More Information

Metro Manila Subway Project: DOTr launches third tunnel boring machine

Dubai: The Department of Transportation (DOTr) has launched a third tunnel boring machine (TBM) for the Metro Manila Subway Project (MMSP), ... More Information

Skanska JV wraps up $450M Baltimore tunnel nearly 2 years early

A joint venture has reached substantial completion on the $450 million Howard Street Tunnel Project in Baltimore nearly two years ahead of the original completion date, according to a ... More Information

Work continues on NYC megaprojects, despite $18B federal funding pause

Contractors on two of New York City’s largest infrastructure projects will keep digging, but they might glance over their shoulders toward Washington... More Information

HS2 Chipping Warden tunnel project moves step forward

HS2 Ltd An aerial view of the HS2 tunnel construction at Chipping Warden. A road HS2 Ltd. The 1.55 mile (2.5km) Chipping Warden tunnel will be ... More Information

First of three Tunnel boring machines on way to SA as beams go up for tram overpass

The first of three tunnel boring machines that will be used to complete the northern and southern tunnels project is on its way to SA as part of a ... More Information

Chennai Metro Rail's TBMs to begin tunneling between Thiruvanmiyur and Indira Nagar

Chennai Metro Rail begins tunnelling work in challenging stretch for phase II project, facing obstacles due to hard rock... More Information

Custom lifting gantry aids TBM removal - Construction Briefing

The four TBMs excavated the 8.4 mile (14 km) Northolt Tunnel section. Two went in each way, digging a pair of tunnels from both ends towards each ... More Information

Tunnel construction begins on Barskoon — Bedel road in Issyk-Kul region

According to the project, two tunnels, 5,340 and 3,840 meters long, respectively, will be built at Sook and Ashuu-Suu passes. They will be among the ... More Information

China debuts world's mightiest centrifuge, unleashing ultra-intense gravity

China leads the way in shield tunnelling machine development · Shield machine of south line of Yellow River tunnel starts boring in Jinan · A close ... More Information

Boring Company Launches Global Operations Control Center in Bastrop, Texas

The Boring Company has officially opened its new Global Operations Control Centre in Bastrop, Texas, the tunnelling start-up announced on X... More Information

Port of Longview Lands $35.9MM Federal Loan for Rail Expansion

Active Construction on New Hudson Tunnel Project Supporting Domestic Jobs and Economic Output ... Bridges/Tunnels, Class 1, Freight, Ports, Track ... More Information

TBM Parvati Achieves Breakthrough At Kakadeo Station Of Kanpur Metro Line 2

Brief Scope: Design and Construction of TBM Tunnel, Cut and Cover Tunnel, ramp after Double Pullia, ramps in Agriculture Depot for main line and ... More Information

Howard Street tunnel reopens ahead of schedule, boosting Baltimore's freight capacity

The Howard Street Tunnel has been reopened after being out of service since February 2025.The nearly 130-year-old tunnel extends north from Camden Yards to the Mount Royal Station and is ... More Information

Progress update on the Tunnel Boring Machine for National Grid

Following its launch in May this year, Buddug, the Eryri VIP tunnel boring machine (TBM) is making good progress digging the tunnel which will ... More Information

Mumbai-Ahmedabad Bullet Train Project Clears Major Hurdle

After months of delay, the tunnel-boring machine stuck in China is being shipped to India, clearing the path for underground construction of the ... More Information

Bright lights: This Las Vegas tunnel is getting a major upgrade

Construction is underway on Desert Inn Road between Paradise Road and Joe W Brown Drive as part of a $9.2 million improvement project on Friday, ... More Information

Panama Canal Tunnel Boring Machine Crosses Under the Canal, Marking a Milestone

Panama Canal Tunnel Boring Machine Crosses Under the Canal, Marking a Milestone on Metro Line 3. Auto-dubbed. 398 views · 6 hours ago ...more ... More Information

Major breakthrough achieved in Mumbai-Ahmedabad bullet train tunnel construction

Mumbai: A breakthrough was achieved for a 4.88 km-long tunnel between Shilphata and Ghansoli for the... More Information

New Austrian tunnelling method achieves milestone breakthrough in BKC-Shillphata undersea tunnel project

In a significant milestone for the ambitious undersea tunnel project between BKC and Shillphata, g Method (NATM) has ... More Information

World's Longest Railway Connection Makes Construction Breakthrough

The Brenner Base Tunnel, built deep beneath the Alps, is set to reshape freight and passenger transport across Europe... More Information

New game-changing tunnel boring, reef cutting 'meeting and beating' all expectations

UG2 reef at Bokoni is the target of the twin mobile tunnel boring and narrow reef cutter. Tunnelling will be done with the mobile tunnel borer for ... More Information

Mota-Engil CEO confirms winning bid for Santos-Guaruja tunnel

The company's subsidiary, Mota-Engil, has won the tender for the construction and operation of Brazil's first underwater tunnel, connecting the ... More Information

Metro Vancouver Utility Nearing Finish of $288M Annacis Water Tunnel

“Resilience is at the heart of this project,” said Nedim Alca, COWI's North America market director. “What makes this milestone so significant is not ... More Information

Fehmarnbelt: Danish tunnel portal nears completion

The work on the entrance to the Fehmarnbelt tunnel at Rødbyhavn on Lolland is almost complete. photo courtesy of The Fehmarnbelt Project. More Information

Final decision on airport tunnel 'now or never'

Alderman Jim Stevenson and City administrators are making a dramatic last push for the airport tunnel before construction on the new north/south ... More Information

Athens Metro Line 4 works to finish by 2029

The construction of Athens Metro Line 4 is progressing steadily, with the entire project ... Tunnel mistakenly excavated in Athens metro project. More Information

First trains on track to run through Metro Tunnel within three months

Melbourne's $15.5 billion Metro Tunnel could be switched on in as little as three months as construction wraps up at two CBD stations and trains ... More Information

Petersburg crews to begin tunnel project in response to ongoing flooding, damage - WRIC

As ongoing water issues have caused significant damage to infrastructure around Petersburg, the Old Towne neighborhood ... More Information

Intelligent optimization framework for tunnel construction

Tunnel construction forms the foundation of railway development and is essential for ensuring route continuity and operational efficiency. However, ... More Information

São Paulo positions TBM for next phase of Line 2-Green

A major milestone was reached on Monday (1 September) with the lowering of the cutter head of the tunnel boring machine (TBM) Cora Coralina... More Information

The 700-ton machine that'll dig NYC's Second Avenue subway extension

NYC has a new tunnel boring machine in its toolbox for the expansion of the line under 2nd ave. If you've never seen some BIG earth moving machines, ... More Information

Light at the end of the tunnel showing for Mount Washington transit project

The project is expected to be completed in October. New tracks finally emerge from the Mount Washington Transit Tunnel as a part of Pittsburgh ... More Information