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Normet Group appoints new CFO

Normet Group appoints new CFOFinnish national Riku Makinen has joined Normet Group as chief financial officer, a position he will take up on 1st October, 2011. He will be based in Switzerland and ... More Information

International section of Lyon-Turin approved

International section of Lyon-Turin approvedOn 03.08.2011 Cipe approved the preliminary design of the common French-Italian section of the Lyon-Turin railway system with construction in two ... More Information

Record 40 live bids at tunnelbuilder

Record 40 live bids at tunnelbuilder0n 11.08.2011 some 40 bids were open at tunnelbuilder Live Bids. Review at your leisure. 32/11. More Information

Breakthrough for Sants-La Sagrera tunnel in Barcelona

Breakthrough for Sants-La Sagrera tunnel in BarcelonaOn the Madrid-Barcelona-French border high-speed railway line, the 11.5 m-diameter Herrenknecht TBM Barcino reached the exit shaft on 26.07.2011 ... More Information

Spanish rail tunnels start

Spanish rail tunnels startOn 13.07.2011 NATM excavation of Callosa De Segura tunnel commenced as part of the 9.8 km-long San Isidro-Orihuela section of the Madrid-Castilla La Mancha-Valencia-Murcia ... More Information

Albertia tunnels excavated using NATM

Albertia tunnels excavated using NATMOn 29.07.2011 breakthrough was achieved in the bi-tube railway tunnel Albertia (4,777 m, 4,786 m) on the Legutiano-Escoriatza section of the ... More Information

Sparvo underway on Variante di Valico in Italy

Sparvo underway on Variante di Valico in ItalyThursday 28.07.2011 saw the launch of the world's largest TBM, the Sparvo machine built by Herrenknecht. Sparvo tunnel (2,564 m northbound, 2,600 m ... More Information

Robbins TBMs progress longest direct tunnel

Robbins TBMs progress longest direct tunnelAt India's remote AMR water tunnel, on 18.06.2011, the 10.0 m-diameter Double Shield Robbins TBM at the inlet end was launched. Launch was severely delayed ... More Information

Terzo Valico high-speed line restarts

Terzo Valico high-speed line restartsA contract agreement, value EUR500 million, has been reached between RFI and Consortium COCIV, headed by Impregilo, to restart work on lot 1 of the Terzo Valico ... More Information

Robbins EPB launch at Emisor Oriente

Robbins EPB launch at Emisor Oriente Mexico City's torrential rains and their ensuing floods have fast-tracked commissioning of one Robbins EPB at the country's most critical infrastructure ... More Information

BASF seals Clem 7 tunnel

BASF seals Clem 7 tunnelBrisbane's Clem 7 tunnel is 4.8 km long with a deepest point 70 m below sea level. To save time on waterproofing, contractor LBB JV selected a spray-applied polymer membrane ... More Information

Breakthroughs at Marche-Umbria quadrilateral

Breakthroughs at Marche-Umbria quadrilateralOn 20.07.2011 breakthrough was achieved in Genga municipality on the SS76 tunnels Valtreara (846 m with 388 m in cut/cover) and Gattuccio (294.50 m with ... More Information

Rome Metro Line C section completed

Rome Metro Line C section completedOn 08.06.2011, excavation and lining of the second tube of the Giardinetti-San Giovanni section of Metro Line C in Rome was completed by Herrenknecht EPB TBM No 2 ... More Information

Girona II tunnel excavation completed

Girona II tunnel excavation completed On 07.07.2011 the TBM Gerunda completed excavation of Girona II tunnel on the Madrid-Barcelona-French border high-speed line. For more click here and es/20. ... More Information

GIA Haggloader produces zero carbon dioxide emission

GIA Haggloader produces zero carbon dioxide emissionNorwegian tunnelling contractor Haehre Entreprenor is making fast progress with reduced carbon footprint at Holsbru Kraftwerk power project near ... More Information

Winning combination of skills at SBT

Winning combination of skills at SBTThe SBT consortium was formed in 2001 to provide rental TBMs and all required support and assistance to projects throughout the world. It brought together ... More Information

Innovation rewarded at Aker Wirth

Innovation rewarded at Aker WirthCreative businesses with vision and an appreciation of pioneering ideas sometimes make it into the list of the top 100 most innovative midsize companies in Germany. ... More Information

Zogno bypass start in Lombardy

Zogno bypass start in Lombardy Construction of Zogno bypass along the ex SS 470 in Bergamo province of Italy commenced in early-July. The new single carriageway road will be 4.3 km-long and will ... More Information

El Muron tunnel excavation complete

El Muron tunnel excavation completeBreakthrough of the 1,730 m El Muron tunnel on the 3.5 km Aspe-El Carrus section on the high-speed line to the east coast in Spain's Alicante province was achieved ... More Information

Galdakao tunnel excavation underway

Galdakao tunnel excavation underwayExcavation of the 1,830 m Galdakao tunnel on the 5.4 km section Lemoa-Galdakao of Vitoria/Gasteiz-Bilbao-Donostia/San Sebastian high-speed railway along the north ... More Information

Robbins TBMs score at Qinling railway tunnel

Robbins TBMs score at Qinling railway tunnelTwo 10.2 m-diameter Robbins main beam TBMs are returning record advances in predominantly phyllite and limestone on a remote railway tunnel beneath ... More Information

Advertisers of the year

Advertisers of the yearWhile tunnelbuilder is free to web and readership driven, somebody has to pay the tab. Our advertisers, who are readers themselves, are the people to thank. Amongst these, ... More Information

ES Rubber to supply Israel high speed tunnels

ES Rubber to supply Israel high speed tunnelsThe Tel Aviv-Jerusalem high speed railway tunnel project will be built by two joint venture contractors. One comprises Pizzarotti of Italy with Shapir of ... More Information

Newsfeed keeps you up to date

Newsfeed keeps you up to dateGet your daily tunnelling news fix from tunnelbuilder by clicking on the newsfeed main menu button. Updated continuously by Google in real time, the 10 most recent TBM ... More Information

New CEO for NFM Technologies

New CEO for NFM TechnologiesAlain Deleard is the new CEO of NFM Technologies, replacing Luc Devaux. NFM Technologies, which exports 75% of its products, exceeded EUR100 million turnover in 2010. The ... More Information

Putzmeister increases worldwide customer support

Putzmeister increases worldwide customer supportPutzmeister Iberica in Madrid has set up a 24/7 technical service hotline for emergencies. A qualified technician will be available to provide ... More Information

Rabat Tunnel des Oudayas open to traffic

Rabat Tunnel des Oudayas open to trafficOudayas tunnel is part of the Bouregreg valley development project in Rabat, capital of Morocco. The new route connects the river shore and the ocean coast, ... More Information

Salvador Injections solving sealing problems

Salvador Injections solving sealing problemsFor more than 30 years Italian company Salvador Injections has been working at strengthening, consolidation and waterproofing of wall structures. Over the ... More Information

RETC underway in San Francisco

RETC underway in San FranciscoThe much-anticipated RETC biennial tunnelling event starts at the Marriott Marquis in San Francisco on Sunday 19th June, 2011. The exhibition in the Yerba Ballroom is a ... More Information

GIA Swedvent fans for China

GIA Swedvent fans for ChinaThe new generation of Swedvent fans features improved silencers filled with processed mineral wool to reduce high frequency sounds. The results are dramatic over the whole ... More Information

Saint-Oyen bypass approved

Saint-Oyen bypass approvedAnas has approved the design for the 4,403 m Etroubles and Saint-Oyen bypass on road SS 27 to the Gran San Bernardo pass in Valle d'Aosta. The project includes the ... More Information

Palude excavation holes with difficulty

Palude excavation holes with difficultyOn 18.05.2011 CMC (Ravenna) broke through the south bore of the 1,166 m Palude tunnel, Maxi lot 1 of the Quadrilatero-Marche-Umbria. Several difficulties were ... More Information

TBM progress on Barcelona drives

TBM progress on Barcelona drives On the Madrid-Barcelona-French border high-speed railway line, Herrenknecht TBM Gerunda reached the Parc de la Devesa shaft on 17.05.2011, after boring 885 m of the ... More Information

World's highest road tunnel

World's highest road tunnelOn 25.05.2011 work began on the 7 km-long Trola tunnel in south-western Sichuan province on the 2,415 km-long Sichuan-Tibet highway in China. At a maximum altitude of ... More Information

Big Robbins breaks out at Niagara

Big Robbins breaks out at Niagara The 14.4 m-diameter Robbins Main Beam TBM, the largest of its type ever produced and affectionately known as Big Becky, has broken through at Niagara. The 10.143 ... More Information

Senior engineers required for Toronto Transit expansion

Senior engineers required for Toronto Transit expansionThe Toronto Transit Commission (TTC) keeps Toronto moving with a dedication to service, safety and convenience that is unparalleled in the ... More Information

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Tunnelling News

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

World’s largest-diameter high-speed railway shield tunneling machine reaches milestone

The world's largest-diameter high-speed railway shield tunneling machine independently developed by China, “Linghang,” for the Chongming-Taizhou ... More Information

Third circuit on £1bn London Power Tunnels 2 project energised

Electricity has begun flowing through a new section of National Grid's London Power Tunnels 2 (LPT2) project after the energisation of a ... More Information

Westmead metro station cavern formwork the biggest in the southern hemisphere

Crews are now retrieving the 1,200-tonne Tunnel Boring Machines (TBMs) that arrived beneath Westmead in September and October, lifting each machine ... More Information

Webuild: excavation begins on three tunnels for Salerno-Reggio Calabria HS/HC Railway

All four TBMs planned for Lot 1A Battipaglia–Romagnano section are operational with launch of latest three Joining TBM Partenope, already active, are Leucosia and Ligea, whose names were ... More Information

SELI Overseas: 75 Years of Tunneling with TBMs

From Channel Tunnel to the Brenner Tunnel: When Tunneling Is Synonymous with Innovation ... SELI TBM at work on the construction site... More Information

Road realignment is major step for HS2, says firm

HS2 Ltd A view of the realigned B4525 on an overcast day. · HS2 Ltd An aerial view of the construction of Greatworth tunnel showing major earthworks ... More Information

Amtrak has made real progress in East River Tunnel rehabilitation

The tunnel has been stripped down to the concrete liner. Westbrook was told the project isn't just about modernizing and replacing what was, but also ... More Information

Madrid invests EUR 123 million in new metro stations on Line 11

TBM Mayrit enters into action in 2026 · November 2025 – February 2026: assembly of the tunnel boring machine in Comillas Park (Carabanchel district) ... Facebook Twitter Flag as ... More Information

Jerusalem Light Rail Construction Advances Ahead of Major Tunnel Work

Local reporting on city project materials notes that “the plan calls for a 2-km underground tunnel to be built beneath the city center, including ... More Information

Why and how the Civil Works Alliance changed Sizewell C tunnel designs from Hinkley Point C

Ground conditions around Sizewell C have required intense collaboration between the project’s contractors alliance to come up with new outfall and intake tunnel design solutions... More Information

AI planning of the first railway tunnel through challenging terrain

AI plans first rail tunnel through tough terrain. Artificial Intelligence China Uses AI for the Construction of Railway Tunnels. 2025-12-08 ... More Information

Will Tunneling Projects Be The Next Big Thing For Mumbai's Public Transport?

During the interview, she also called tunnel boring machines the safest and one of the most efficient ways of doing tunelling. "Only the place of the ... More Information

Chipolbrok vessels deliver tunnel boring machines to Sydney and mineral bulk to Peru

Chipolbrok delivers TBMs for Sydney Metro on Chipolbrok Star and loads 29000t minerals in Peru on Taixing, showcasing fleet versatility... More Information

How Seequent's software solutions help to manage tunnelling data

The second phase of Singapore's Cross Island Line (CRL) metro project is under way, assisted by a suite of software from Seequent. Singapore's CRL is ... More Information

Muography to Transform Tunnel Safety Monitoring

Underwater bridge tunnels have become vital arteries for cities, enabling smooth vehicular passage beneath rivers, bays, and inland waterways. More than 200 of these structures operate ... More Information

10 longest tunnels in the world that reshaped global transportation

Modern tunnel construction involves sophisticated techniques, including tunnel boring machines and advanced geological surveying. The project ... More Information

Čučković: Construction of the tunnel boring machine for the Belgrade Metro in final phase

It is a good thing that we, for example, acquired these tunnel boring machines at a lower price than other countries... More Information

Serbia plans to borrow 2.5 billion EUR in 2026 for the construction of the Belgrade metro

It is also stated that two TBMs (tunnel boring machines), the so-called moles, have already been ordered and are expected to be delivered to ... More Information

VSM starts operation at Tilbury

The pioneering Vertical Shaft Sinking Machine (VSM) from Herrenknecht, named “Verena”, after Verena Holmes, a pioneering British mechanical ... More Information