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Putzmeister worldwide market presence

Putzmeister worldwide market presencePutzmeister supplies the construction, mining and tunnelling industries with concrete, mortar and solids pumps and high-pressure cleaners in systems developed, ... More Information

Toronto opts for foot tunnel to airport

Toronto opts for foot tunnel to airportToronto Port Authority will start work in 2011 on the EUR33.5 million pedestrian tunnel beneath the Western Channel linking the Western Gap ferry docks at the ... More Information

New Robbins support system working at Qinling

New Robbins support system working at QinlingThe 16.6 km-long West Qinling rail tunnels will pass nearly 1.5 km beneath the mountain peaks, necessitating a complete rethink of the TBM support ... More Information

Happy holidays to all our readers!

Happy holidays to all our readers!All at tunnelbuilder wish you a great holiday! This year, more than ever, you have earned it! The industry has survived the recession in great shape, a tribute to ... More Information

Swedvent introduces new quiet fans

Swedvent introduces new quiet fansA new generation of Swedvent ventilation fans and ducting for tunnel construction has been announced by the Swedish manufacturer. Design changes have resulted in ... More Information

Lucerne bypass in design

Lucerne bypass in designThe Federal Council recently added the Lucerne bypass project to Module 3 of its programme to improve capacity on the road network. The design will be studied in depth and ... More Information

Work starts on India's longest road tunnel

Work starts on India's longest road tunnelWork on India's 8.8 km-long Rohtang tunnel began end-June, 2010 with completion scheduled in 2015, a duration of 63 months. Ms/SMEC International Pvt Ltd ... More Information

Ourense-Vigo AV line project approved

Ourense-Vigo AV line project approvedOption 3 of the feasibility study for the 54.6 km Ourense-Vigo high-speed line has been approved in which an 18 km-long central tunnel will be required from the ... More Information

Sarria tunnel excavation completed

Sarria tunnel excavation completedThe 3,118 m-long Sarria tunnel on the 4.96 km Sarria de Ter-Sant Julia de Ramis subsection of the Madrid-Barcelona-French border high-speed railway was completed on ... More Information

East Side Access moves ahead

East Side Access moves aheadA milestone on the long awaited East Side Access beneath the East River between Manhattan and Queens boroughs in New York was reached when a Robbins main beam TBM ... More Information

Specialized treatment plants from Fraccaroli & Balzan

Specialized treatment plants from Fraccaroli & Balzan For more than 40 years Italian manufacturer Fraccaroli & Balzan has been a world leader in providing wastewater treatment plants and mud ... More Information

New credit facility for Athens Metro extension

New credit facility for Athens Metro extensionOn 17.06.2010 Attiko Metro S.A. and European Investment Bank (EIB) signed an agreement covering a new credit facility of EUR150 million for design, ... More Information

Mühlhäuser launches customer-friendly website

Mühlhäuser launches customer-friendly websiteLong-time tunnelbuilder client Mühlhäuser has a new home page designed to provide information needed by customers in their project planning. Product ... More Information

NZ Transport Agency seeks registrants for Auckland job

NZ Transport Agency seeks registrants for Auckland jobRegistrations of interest are sought, at the latest by 21st July 2010, from suitably qualified and experienced consortia to deliver the design ... More Information

Book early for Hong Kong Tunnel Design & Construction conference!

Book early for Hong Kong Tunnel Design & Construction conference!Tunnel Design & Construction Northeast Asia takes place at Harbour Grand, Hong Kong 24-25 November, 2010. Register before 13 ... More Information

New video detection management system from Traficon

New video detection management system from TraficonTraficon Flux collects traffic data, alarms and video images generated by video detectors in tunnels and on the open road, providing an interface ... More Information

First section of Gautrain Rapid Rail Link opens for World Cup

First section of Gautrain Rapid Rail Link opens for World Cup The first section of the 160 km/h Gautrain Rapid Rail Link, between Sandton Station and the OR Tambo International Airport in ... More Information

New heavy duty rock drills from Atlas Copco

New heavy duty rock drills from Atlas CopcoAtlas Copco has launched three heavy duty versions of its popular 1800-series hydraulic rock drill intended for face drilling in tough underground mining ... More Information

Breakthrough at Sellero tunnel on SS 42 in Brescia

Breakthrough at Sellero tunnel on SS 42 in BresciaSellero tunnel broke through on 18.06.2010 as part of the refurbishment work on the SS 42 Tonale-Mendola for the completion of the ... More Information

Madrid-Barcelona-French border high-speed railway

Madrid-Barcelona-French border high-speed railwayOn 17.06.2010 the TBM Gerundi completed the first 480 m of the 3.6 km-long Girona section on the Madrid-Barcelona-French border high-speed railway. ... More Information

Largest Robbins TBM winning at Niagara

Largest Robbins TBM winning at NiagaraThe 14.4 m-diameter Robbins hardrock TBM is now two-thirds along the challenging alignment at Niagara, having broken a few records in between times. Contractor ... More Information

North American Tunneling show underway in Portland

North American Tunneling show underway in PortlandThe conference and exhibition organized by UCA of SME for Portland, Oregon started today at the Marriott Waterfront and will continue until ... More Information

Tunnel Design & Construction Europe

Tunnel Design & Construction EuropeThe Tunnel Design & Construction Europe conference to be held in Zurich, Switzerland 25th-28th October 2010 will bring together international industry ... More Information

Tunnel Design & Construction Europe

Tunnel Design & Construction EuropeInternational conference scheduled for Zurich, Switzerland 25-28th October 2010. Early birds can register by 25th June 2010 and get up to EUR465 off standard ... More Information

Hits and misses

Hits and missesTen years ago, when Internet advertising was in its infancy and mega-hits were the order of the day, we started to see a variation between hits and visits. In short, hits were running ... More Information

EN12101-3 certification for large Flakt Woods JM axial fans

EN12101-3 certification for large Flakt Woods JM axial fansFlakt Woods has achieved EN12101-3 certification for 400 degrees C for 2 hours (F400) on its range of large axial fans up to 2.8 m-diameter ... More Information

Meet Babendererde Engineers at NAT in Portland

Meet Babendererde Engineers at NAT in Portland Babendererde Engineers is an independent engineering company specializing in underground tunneling. Together with the sister company in ... More Information

Normet increases production capacity in Finland

Normet increases production capacity in FinlandNormet has extended and modernized its factory at Iisalmi, Finland, signalling its recovery from the recent economic downturn in mining and tunnelling ... More Information

Herrenknecht giant EPB for Italy

Herrenknecht giant EPB for ItalyThe largest TBM ever built, a 15.55 m-diameter Herrenknecht EPB, will be used on the extension of the A1 highway between Bologna and Florence in 2011. Read the press ... More Information

Success at Brightwater conveyance tunnel in Seattle, WA

Success at Brightwater conveyance tunnel in Seattle, WAThe JV JCT (Jay Dee Contractors/Frank Coluccio Construction/Taisei Corporation) has announced that their EPB TBM is stopped just short of the ... More Information

Cooling the Tube in London

Cooling the Tube in LondonFlakt Woods has been commissioned to produce a mix of bespoke ventilation products to help improve the airflow on station concourses and in tunnels on the London Tube. For ... More Information

See you at Intertunnel in Torino!

See you at Intertunnel in Torino!The tunnelbuilder team will be at Intertunnel in Torino, Italy on June 8-10 this week, so look out for us! We will be visiting our clients to ensure they are getting ... More Information

Swiss Tunnel Congress 2010

Swiss Tunnel Congress 2010 The Swiss Tunnel Society (STS) is hosting the Swiss Tunnel Congress in the Lucerne Culture and Convention Centre from June 9-11, 2010. With nearly 800 registrations, just ... More Information

Paiesco tunnel on SS337 in Val Vigezzo opens

Paiesco tunnel on SS337 in Val Vigezzo opens The new single-bore 1,431 m-long, 9% gradient Paiesco tunnel opened on ... More Information

Final launch at B1 metro in Rome

Final launch at B1 metro in Rome On 26.05.2010, the 9.8 m-diameter EPB launched on construction of the Conca d'Oro-Jonio section, a single tube tunnel for the B1 metro line in Rome. Preparatory ... More Information

Refurbishment plans for Swiss road tunnels

Refurbishment plans for Swiss road tunnelsIn 2008 a survey by ASTRA, the Federal Roads Office, revealed that 126 of the 220 national road tunnels in Switzerland are not fully compliant with the ... More Information

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Tunnelling News

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

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