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TBM Hiwa-i-te-Rangi breakthrough for Central Interceptor tunnel NZ

On 17th December, the Ghella Abergeldie Joint Venture (GAJV) celebrated the arrival of the massive Hiwa-i-te-Rangi TBM in the Tawariki Street shaft in Grey Lynn as part of the construction of ... More Information

HS2 - TBM Sushila completes its 8.04 km excavation of Northolt tunnel

On 19th December 2024, TBM Sushila - which is 160-m in length, with a cutterhead of 9.84 m in diameters and a weight of 2,050 t, reached Green Park Way vent shaft in Ealing, breaking through ... More Information

Tenders for the construction of the Szczecin bypass with a tunnel under the Oder begin in Poland

Press Release - The Szczecin Western Bypass (ZOS) on the S6 expressway will be nearly 50 km long, including a 5 km tunnel under the Oder River in the Police area - the longest road tunnel in ... More Information

North portal completed for BBT

As of December 2024, the Sill Gorge construction lot, which houses the north portal of the Brenner Base Tunnel, is officially completed. There are already numerous infrastructures in the ... More Information

Ontario Line - First downtown subway tunnel work in more than 60 years

Excavation is now underway near Exhibition Station for the Ontario Line’s TBM launch site. A 16-m deep shaft will become the starting point for two TBMs that will dig a roughly 6 km pair of ... More Information

Final Stretch of TBM Flavia’s Journey: Last Kilometre of Excavation in the Western Main Tunnel

TBM Flavia, a colossal tunnel boring machine measuring 200 meters in length, weighing 2,750 tons, and powered by 4,200 kW, is nearing the completion of its excavation journey. Launched in April 2019 ... More Information

Breakthrough at Maa Anandmayee Marg Station for DMRC in Delhi Metro Phase-IV

On December 5, 2024 the Delhi Metro Rail Corporation (DMRC) achieved a significant construction milestone in Delhi Metro Phase IV, Package DC-07, with the completion of the longest tunnel ... More Information

India - Namma/Bangalore Metro’s Phase 3A Approved by Karnataka Government

After a cabinet meeting held on 6th December, 2024, Karnataka Minister of Law and Parliamentary Affairs, HK Patil, announced that Bangalore Metro Phase 3A project’s Detailed Project Report ... More Information

WTC 2026 - May 15-21, Montréal, Canada

On behalf of the Canadian Tunnelling Association and the 2026 World Tunnel Congress Organizing Committee, I’m pleased to extend my warmest greetings and invite you to take part in this ... More Information

TERRATEC Tunnel Conveyors drive progress for Metro Manila Subway Project in the Philippines

The Metro Manila Subway Project is thriving with the implementation of TERRATEC’s Continuously Advancing Tunnel Conveyors. TERRATEC Continuously Advancing Tunnel Conveyors are currently ... More Information

India - realignment approved for twin tunnels

Brihanmumbai Municipal Corporation (BMC) authorities earlier this week gave its approval to shift 600 m towards the eastern side the twin tunnels of the Goregaon Mulund Link Road (GMLR) project, ... More Information

TBMs nearly ready to dig Victoria's longest road tunnels

The 2 TBMs that will dig the North East Link road tunnels are a step closer to starting digging. The TBM cutterheads have been lowered into place in Watsonia. Next, the TBMs will be tested and ... More Information

10th edition of ITA Tunnelling Awards – Winners announced

The 10th edition of the ITA Tunnelling and Underground Space Awards took place on 28th November 2024 in Genoa at the Magazzini del Cotone, Porto Antico , and was opened by Arnold Dix, the ITA ... More Information

STUVA-Expo and STUVA Conference 2025

One of the world's leading and largest events in the tunnelling sector - 113 companies have already booked their trade fair participation. The current demand to exhibit at STUVA-Expo 2025 in Hamburg ... More Information

Progress Update: Over 50% of Tunnel Boring Completed on Hanoi Metro Line 3

As of July 30, 2024, the Hanoi Metropolitan Railway Management Board (MRB) has made significant progress in excavating tunnels for the Hanoi Pilot Light Metro Line 3, connecting Nhon and Hanoi ... More Information

ITA Awards day is almost here - Reserve your ticket and join the party!

Excitement is building towards the 2024 ITA Tunnelling Awards celebration in Genoa, Italy, on Thursday 28 November 2024 The day-long event will celebrate the 25 Finalists of ... More Information

HS2 reaches halfway point on key ‘green tunnel’

Press Release - Construction of the 700-metre-long HS2 Burton Green ‘green tunnel’ is now 50% complete, with 150 people supporting the build process The last year has seen completion of ... More Information

Norway - Stad ship tunnel out for tender on December 1st

The Norwegian Coastal Administration (NCA) plans to announce the tender for the Stad ship tunnel construction on December 1st 2024. The regulatory plans were completed at the end of October. NCA ... More Information

First TBM Debohra breakthrough for the U2 metro line in Vienna

On 6th November TBM Debohra - length 127 m and weight 1,300 t - has reached an important milestone for the U2 metro line in Vienna: after 240 m of underground work from Matzleinsdorfer Platz, ... More Information

Public comment period on Ballard Link Extension in United States, deadline December 9

Sound Transit has started the National Environmental Policy Act (NEPA) scoping process for the Ballard Link Extension. The extension will add 12.39 km (7.7 miles) of light rail service with ... More Information

Final breakthrough for the Rante tunnel on the Ourense LAV bypass

On November 8, 2024, Adif AV celebrated the completion of the Rante tunnel excavation on the new Tabodela-Seixalbo route, part of Spain's high-speed rail (LAV) network. This 3.4-km tunnel, built ... More Information

Snowy 2.0 Project – New milestone for TBM Lady Eileen Hudson

The Snowy 2.0 pumped-hydro megaproject has marked a significant milestone, with one of three TBMs, Lady Eileen Hudson, now two-thirds of the way through its second tunnel excavation. The TBM is ... More Information

Record Rewritten! Largest-Diameter Shield Machine "Jianghai" comes off production line in China

On October 31, a ground breaking shield machine with an excavation diameter of 16.64 meters—the largest Chinese made —rolled off the production line in Changsha, Hunan. This machine will ... More Information

A New Generation of ECO Soil Conditioning Products Reduces Water Use in EPB-TBM Tunnelling

Tunnel excavation using EPB-TBMs has achieved remarkable productivity due to advancements in TBM design, highly effective soil conditioning products, improved backfilling grout techniques, and more. ... More Information

TERRATEC EPBM advances Bangkok Water Supply Project

In early October, a TERRATEC 4.8m diameter Earth Pressure Balance Tunnel Boring Machine (EPBM) was lowered into place for the Metropolitan Waterworks Authority’s Ninth Bangkok Water Supply ... More Information

Renewed funding for HS2 project

Press release - In the latest 2024 UK budget, Chancellor Rachel Reeves has allocated renewed funding for the HS2 project, specifically prioritizing the development of its tunnel network. This ... More Information

Spain – Consideration of Reopening the Somport Railway Tunnel in Huesca

On September 26th , the Spanish Ministry of Transport and Sustainable Mobility initiated the public consultation process for the Information Study on reopening the Somport railway tunnel in Huesca, ... More Information

Norway - Completion of the Bjonnas Twin-Tube Tunnel

On October 4, the final excavation phase of the Bjonnas Tunnel using the NATM (New Austrian Tunneling Method) was successfully completed! Crews excavated nearly 450,000 cubic meters of rock, some of ... More Information

Spain - Grant for Expansion and Upgrades to the Belate and Almandoz Tunnels on the N-121-A

On October 22, the Spanish Council of Ministers, following a proposal from the Ministry of Transport and Sustainable Mobility, approved a Royal Decree authorizing a direct grant of EUR 40 million to ... More Information

Tutor Perini Subsidiary Secures $1.1 Billion Contract for New York's Vital Water Tunnel Project

Frontier-Kemper Constructors, an Indiana-based construction company and subsidiary of Tutor Perini, has been awarded a $1.1 billion contract by the New York City Department of Environmental ... More Information

Snowy 2.0 Project – tunnel breakthrough!

On October 14th, a significant achievement was made in the Snowy 2.0 project with the breakthrough of the 216-meter tunnel connecting the water intake at the upper Tantangara reservoir to the gate ... More Information

Gates open on London's New super sewer heralding new era for the Thames

Press release - London’s super sewer, designed to protect the River Thames from sewage pollution well into the future, has now been turned on. In May 2024, the new 25km super sewer was ... More Information

Final Tunnel Boring Machine Launches as Sydney Metro West Reaches Major Milestones

On October 16, 2024, tunnel boring machine (TBM) Ruby began its journey to carve out the final section of the Sydney Metro West project, marking a significant step for this city-shaping ... More Information

First Train Enters Cross River Rail Tunnel for Critical Testing

On October 18, 2024, a significant milestone was reached for the Cross River Rail project as a test train entered one of the project’s twin tunnels and arrived at a new underground station ... More Information

United States - TBM Mary restarted for HRBT project

The TBM - six months to the day since it broke through the headwall at HRBT North Island - is on the move again. Mary began boring a twin eastbound towards Norfolk shortly after 17th October ... More Information

Turin/Lyon – Updates October

RFI - Turin-Lyon: legality protocol signed for the construction of the Italian section On 18 October 2024, the Legality Protocol was signed between the Prefecture of Turin, Rete Ferroviaria ... More Information

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Tunnelling News

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

World's longest motorway tunnel finally opens in £3BILLION project

The Tianshan Shengli (Victory) Tunnel, located in the Tianshan Mountains of Xinjiang, China, measures some 22 kilometres – roughly 13.75 miles – and ... More Information

Cross-river tunnel of Nanjing Metro Line 4 Phase II completes tunneling

This photo taken on Dec. 27, 2025 shows the rear of the "Xinzhengcheng" tunnel boring machine at the construction site of Nanjing Metro Line 4 ... More Information

Tunnels Design and Construction Market is Going to Boom

HTF Market Intelligence projects that the global Tunnels Design and Construction market will expand at a compound annual growth rate (CAGR) of 6.80% from 2025 to 2032, from 72 Billion in ... More Information

Longest tunnel in the world costing £7billion will connect 3 European cities

The Brenner Base Tunnel is currently under construction and will connect the countries of Austria and Italy. The impressive tunnel, which is set ... More Information

Georgian Officials Mark Completion of Railway Modernization, Hoping to Boost Transit

The works also included the construction of the 8,300-meter dual-tube tunnel near Kvishkheti, 10 bridges, six tunnels, and around 100 engineering ... More Information

Israeli municipality approves budget for new tunnel project south of Jerusalem

The Jerusalem Governorate said that the project aims to connect the Har Homa settlement, built on Jabal Abu Ghneim land, to the Begin bypass road near ... More Information

Megaprojects Under Construction Around World In 2026

Described as the largest road tunnel in the U.K., the Lower Thames Crossing will link Tilbury in Essex via a tunnel underneath the Thames with ... More Information

Delhi Metro expansion: Cabinet approved Rs 12,015 crore project

The project, planned over a construction timeline of three years, will be executed largely underground using tunnel boring machines to minimise ... More Information

World's Longest Expressway Tunnel to Open, Linking North and South Xinjiang

Engineers used innovative methods and specially designed machines called tunnel boring machines (TBMs) to dig through hard rock faster and safer than ... More Information

The huge £21bn mega-tunnel that goes right through the middle of a mountain

Huge boring machines will create a 57.5km (35.7mile) tunnel through the Alps to connect French and Italian high-speed rail networks and link Lyon ... More Information

Rome digs deep for railway that burrows beneath the Colosseum

Tunnellers used lasers to check whether ancient columns at the nearby Forum were not wobbling as their 300ft long tunnel boring machine churned ... More Information

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