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Ground consolidation at TBM passage in Girona

Ground consolidation at TBM passage in GironaInstallation of 178 sheet piles has been completed between Girona I tunnel and adjacent buildings to consolidate the structures before the Gerunda TBM ... More Information

Elche railway tunnel underway in Alicante

Elche railway tunnel underway in AlicanteOn 15.02.2010, excavation of the 1,288 m-long, 86 sq m twin-track Elche tunnel started on the El Carrús-Elche section of the Madrid-Castilla La ... More Information

Mammoth Genoa underground motorway agreed

Mammoth Genoa underground motorway agreed A memorandum of understanding was signed in Genoa on 08.02.2010 for the construction of a 23 km underground motorway, including the Gronda di Ponente and ... More Information

First news from tunnelbuilder, daily!

First news from tunnelbuilder, daily!Only one tunnelling website on earth updates every day of the week, including weekends! Whenever there is important news for our readers, it is uploaded at ... More Information

Reboredo railway tunnel excavation completed

Reboredo railway tunnel excavation completedExcavation of the 790 m-long, 110 sq m twin-track Reboredo tunnel was completed, including two cut/cover sections. Reboredo tunnel is on the Silleda, ... More Information

Atlas Copco and Rio Tinto to go mechanical tunnelling

Atlas Copco and Rio Tinto to go mechanical tunnellingAtlas Copco will develop one of two rapid tunnelling concepts for Rio Tinto, which will enable fast and cost-effective construction of mine ... More Information

Major collapse at Gilgel-Gibe hydro

Major collapse at Gilgel-Gibe hydro Gilgel-Gibe hydroelectric power plant is located in the Great African Rift Valley region of Ethiopia. It’s 26 km-long headrace tunnel cuts through heterogeneous ... More Information

Pedemontana Lombarda startup

Pedemontana Lombarda startup Work on the Pedemontana Lombarda officially started on 06.02.2010. The Pedemontana will link the five provinces of Bergamo, Monza & Brianza, Milan, Como and Varese ... More Information

Three Robbins TBMs enroute to Mexico city

Three Robbins TBMs enroute to Mexico cityOn 02.02.2010, the ceremony to mark the assembly of three Robbins EPBs was held in Corpus Christi, Texas, US. The machines are headed to Mexico City's Emisor ... More Information

Normet International appoints Kleven

Normet International appoints KlevenThe new Director, Tunnelling and Special Projects at Normet International is Odd-Bjorn Kleven, who will work out of the company's offices in Baar, Switzerland and ... More Information

Atlantic Ocean tunnel opens in Norway

Atlantic Ocean tunnel opens in NorwayOn 19.12.2009, the 5.37 km-long Atlantic Ocean tunnel between Kristiansund and Bremnes on National Road 64 was opened. For construction history visit ... More Information

Spanish symposium on tunnels

Spanish symposium on tunnelsThe fifth symposium on tunnels entitled Security for tunnels in the 21st century will be held in Bilbao, Spain later this month from 24.02.2010 to 26.02.2010 at the ... More Information

Stuttgart 21 project starts in Germany

Stuttgart 21 project starts in GermanyWork on the Stuttgart 21 project finally started on 02.02.2010. Initially, the existing Stuttgart main station will be replaced with a subsurface station 12m ... More Information

Castellanza railway tunnels open in Italy

Castellanza railway tunnels open in ItalyThe Castellanza tunnels on the Milan Cadorna-Saronno-Busto Arsizio-Malpensa line operated by Ferrovie Nord Milano opened on 30.01.2010. The two parallel ... More Information

Aker Wirth TBM for Switzerland

Aker Wirth TBM for Switzerland Aker Wirth has been commissioned to construct and deliver a gripper tunnel boring machine (TBM) by ARGE Zugangsstollen Limmern (AZL). The order has a total value of ... More Information

Elasto Plastic Concrete in Atlantic Ocean tunnel

Elasto Plastic Concrete in Atlantic Ocean tunnelMore than ten major tunnelling projects in Norway are benefiting from the use of Barchip structural synthetic fibre to reinforce their shotcrete ... More Information

Ravnehei tunnel commissioned in Norway

Ravnehei tunnel commissioned in NorwayOn 24.11.2009 the 7 km Hanesund-Sande section on road Rv 465 opened, including the 3.3 km-long Ravnehei tunnel between Kjorrefjord and Ulland in Farsund ... More Information

Burata railway tunnel excavation completed

Burata railway tunnel excavation completedOn 26.01.2010 excavation of the 4,068 m-long, 85 sq m twin-track Burata tunnel was completed. Burata is on the 6.4 km Ourense to Amoeiro section of the ... More Information

Innovations at Bauma 2010

Innovations at Bauma 2010The 29th Bauma takes place in three months time at Neue Muenchen Messe, from 19-25 April. The exhibition is sold out, with around 3,000 firms showing their goods. Some ... More Information

SELI opens branch in Hong Kong

SELI opens branch in Hong KongThe new SELI branch office at 28 Canton Road, Unit 408A - Lippo Sun Building, Kowloon, HKSAR will serve as an immediate reference contact for all the company's projects ... More Information

Line B extension of the Lyon metro

Line B extension of the Lyon metroIn July 2009 the JV headed by Chantiers Modernes Rhone-Alpes, a subsidiary of Vinci Group, with the nine companies SPIE Batignolles, TPCI, Dodin Campenon Bernard ... More Information

Salerno-Reggio Calabria motorway A3 design approval

Salerno-Reggio Calabria motorway A3 design approvalOn 28.01.2010, Anas approved the executive design and the start of work on the third mega lot, third part of the Salerno-Reggio Calabria motorway ... More Information

NFM Technologies improves on Spanish record

NFM Technologies improves on Spanish recordWhen TBMs of sizes greater than 9 m-diameter complete more than a kilometre in a month, the talk turns to records. NFM Technologies already held the ... More Information

Telvent tunnel management system for Brazil

Telvent tunnel management system for BrazilSpanish IT firm Telvent will install a tunnel management system on the El Morro Alto tunnels in Brazil to enhance safety and reduce accidents.Under the ... More Information

Work starts on Caldecott fourth tube

Work starts on Caldecott fourth tubeCaldecott tunnel is on Route 24 between Oakland and Orinda in California, US. It handles 160,000 vehicles/day through its three tubes, and is overloaded. Work is ... More Information

Madrid-Castilla La Mancha-Valencia-Murcia high speed line progress

Madrid-Castilla La Mancha-Valencia-Murcia high speed line progressExcavation has been completed at the 2,437 m-long El Regajal rail tunnel on the 4.7 km Aranjuez-Ontígola section of the ... More Information

Robbins EPB assembled at Mexico jobsite

Robbins EPB assembled at Mexico jobsiteMexico City officials have celebrated the erection of the country's largest ever TBM with a cutterhead turning ceremony. Next week, the 10.2 m-diameter Robbins ... More Information

Portugal court suspends Marao tunnel construction

Portugal court suspends Marao tunnel constructionConstruction of the twin-tube 5,655 m-long Marao motorway tunnel on the new Amarante-Vila Real highway in Portugal has been suspended following ... More Information

Padley & Venables worldwide

Padley & Venables worldwidePadley & Venables is one of the largest international manufacturers of a wide range of quality tools and bar steels for use in the mining, tunnelling, quarrying, ... More Information

GIA working well in Hong Kong small diameter drainage tunnels

GIA working well in Hong Kong small diameter drainage tunnelsContractor Dragages-Nishimatsu has taken delivery of a fleet of GIA locomotives, shuttlecars and Haggloaders to assist in small diameter ... More Information

Devil's Slide improvement

Devil's Slide improvementOwned and operated by Caltrans, the Devil's Slide project is located on State Route 1 in San Mateo County between the City of Pacifica and the town of Montara, California. ... More Information

Terratec sponsors tunnelbuilder.com

Terratec sponsors tunnelbuilder.comTerratec, our old friends from Tasmania, are starting 2010 with a bang, sponsors of tunnelbuilder.com! For 20 years Terratec has been manufacturing Total ... More Information

Singapore Downtown Line progressing

Singapore Downtown Line progressingContractor Soletanche Bachy is excavating trenches for the slurry walls that will contain the important Bugis interchange station on the new 40 km-long, 33 ... More Information

New guidelines for safety in Italian road tunnels design

New guidelines for safety in Italian road tunnels designANAS has published updated guidelines for safety in Italian road tunnels design, with more information about Italian Risk Analysis Method and ... More Information

Korea Mould for precasting equipment

Korea Mould for precasting equipmentKorea Mould supplies high quality segment lining products for the world's tunnelling industry and a range of similar products for railway, pipejacking, spun ... More Information

Normet increases investment in tunnelling market

Normet increases investment in tunnelling market2009 proved to be a good year for Normet, promoting the decision to invest another EUR1 million at their plant in Iisalmi, Finland. 2010 has started ... More Information

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Tunnelling News

Deutsche Bahn awards contract for Munich S-Bahn project

The contract involves structural works for the expansion, including the construction of tunnels and an underground station. The Tunnel Ostbahnhof JV, ... More Information

Excavation completed on Italian side of Brenner Base Tunnel

The tunnel boring machine (TBM) named “Flavia” successfully bored through the Alps beneath the Mules 2–3 section, reaching the Austrian border. More Information

Giant tunnel borer set for Shantou Bay project

A giant tunnel boring machine has been installed for tunnelling under Shantou Bay in Shantou, South China's Guangdong province. [Photo provided to ... More Information

€0.4bn road and tunnel project in Georgia

Work is proceeding on the Kvesheti-Kobi road and tunnel scheme in Georgia. The scheme is part of a larger project, being carried out with Chinese ... More Information

Lahore to transform with Rs49 billion tunnel boring project

Pakistan, April 27 -- The federal government has approved Lahore's Rs49 billion Tunnel Boring Project, marking a major development for the city... More Information

Construction at Cleveland Hopkins International Airport

The 2,100-foot-long tunnel connects the terminal to parking facilities and the tramway leading to the RTA public rail line. During the project, two of ... More Information

AFFHOLDER AND J.F. SHEA TEAM UP ON $700 MILLION CONTRACT

The tunneling subsidiary, Affholder LLC, will lead a joint venture with J.F. Shea Construction, Inc., to build the I-35 Capital Express Central ... More Information

Factory Testing Complete on DC Water's first tunnel boring machine for the Potomac River

Mary passed all the necessary requirements and is one of two TBM's on the project. The tunnel is part of DC Water's Clean Rivers Project, to ... More Information

Work on Chennai Metro tunnel racing to a finish

The machine Flamingo, which started boring in 2023 for the tunnel linking Light House with Thirumayilai, is expected to reach the other end in ... More Information

CPK awards contract to build high-speed rail tunnel in Lodz, Poland

The tunnel, to be constructed using a tunnel boring machine (TBM), will have a ... More Information

Inside HS2: Meet London's miners working on the Northolt tunnels

We are on a tunnel boring machine (TBM) inside High Speed Two's huge Northolt tunnels. These tunnel boring machines are part of a tunnelling ... More Information

Ontario Begins Construction Of Last Tunnel Segment Of The Eglinton Crosstown West Extension

The remaining eastern portion of tunnel construction (500-meter twin tunnels) will use the sequential excavation method, with daily progress of ... More Information

Norway is building the world's longest and deepest subsea road beneath its fjords

We have subsea road tunnels which have that construction. And the new tunnel between Germany and Denmark, there they are laying down cases and put ... More Information

CERN releases report on the feasibility of a possible Future Circular Collider

The estimated cost of construction of the FCC electron–positron stage, including the tunnel and all the infrastructure, is 15 billion Swiss francs... More Information

TBM break through on Auckland's £915M wastewater megaproject completes 16.2km tunnel

Auckland's major wastewater infrastructure project, the Central Interceptor, has reached a significant milestone with the final breakthrough of ... More Information

In pics: construction site of Chongming-Taicang tunnel

A smart assembling vehicle works at "Linghang" large diameter shield tunneling machine at the construction site of the Chongming-Taicang tunnel, part of the Shanghai-Chongqing-Chengdu ... More Information

IN PICTURES: Spectacular images of the removal of HS2's huge tunnelling machine

TBM Sushila was used to construct part of the Northolt Tunnel – an 8.4-mile tunnel ... construction/london-tunnels/progress-3/northolt-tunnel/tbm- ... More Information

Historic tunnels uncovered beneath Salisbury station during £5.3M upgrade project

Engineers from Network Rail and South Western Railway have uncovered a network of tunnels and rooms beneath Salisbury station during ongoing £5.3M upgrades to the station’s forecourt... More Information

Massive $450m road project connecting Russia and Georgia with six bridges & five tunnels

Massive $450m road project connecting Russia and Georgia with six bridges & five tunnels. The new road will pass through Georgia along a trade route ... More Information

Buca Metro Tunnel Excavations Reached 50 Percent Level

Important progress is being made in the construction of the line, where four tunnel boring machines (TBMs), each 100 meters long, 7 meters wide and ... More Information

'Very promising' narrow-reef boring technology nearing rollout stage

A novel tunnel boring machine (TBM) will open up Bokoni's narrow tabular dipping PGM orebody to allow narrow-reef boring to take place, so that ... More Information

A vast undersea tunnel is being built

The 7.4 billion-euro ($7.7 billion) project is a huge undertaking, in every sense. Each section of the tunnel is colossal. These concrete structures ... More Information

National Grid gets planning permission for Grain to Tilbury upgrade with new Thames tunnel

National Grid has secured full planning approval for the Grain to Tilbury project, which includes a new power tunnel under the River Thames... More Information

Right track tunnel of Huangjialing Tunnel in NW China's Gansu drilled through

A staff member works on the construction site of the right track tunnel of the Huangjialing Tunnel in Linxia Hui Autonomous Prefecture, northwest ... More Information

Shetland Islands tunnels plan takes 'huge step forward' with sonar investigations

This phase will further inform the project's development and feasibility. The tunnel project, seen by locals as pivotal for improving ... More Information

Construction of the Tarande tunnel begins next week

On March 17th, in Vilnius district Construction of a tunnel and other related infrastructure will begin at Taranda and Bukiškis. This project aims ... More Information

Delhi Metro's Golden Line achieves major tunnel breakthrough;

The construction of Delhi Metro's Golden Line achieved a major milestone on Thursday as the Tunnel Boring Machine (TBM) broke through at the ... More Information

RiverRenew Tunnel Project Nearing Completion

The RiverRenew Tunnel System Project, the largest infrastructure investment in Alexandria's history, is nearing completion. More Information

Sydney Metro West tunnels enter final stretch after big breakthrough

Two tunnel boring machines (TBMs) constructing the huge Sydney Metro West tunnels have made a smashing entrance 24 metres below the surface. More Information

Chennai Metro Rail launches first tunnel boring machine for underground tunnelling in Kolathur

Corridor 5 begins at Madhavaram Milk Colony and connects through Koyambedu, Porur, Alandur and other residential/commercial areas of the city to ... More Information

Element Six, Master Drilling Announce Tunnel Development Partnership

Element Six and Master Drilling will deliver a diamond-enabled solution designed to increase tunneling development speed, reducing costs and minimize the environmental impact of tunnel ... More Information

Gateway Project Tunnel Connecting NY and NJ Moves Forward

Five Gateway contracts have been awarded so far, including one on Predergast's first day for construction on the Manhattan side of the tunnel... More Information

HSR Xi'an – Yan'an: Completion of All Tunnels in the Project

The HSR Xi'an – Yan'an has completed the excavation of all tunnels, including the Tongchuan Tunnel. This is a key milestone in the construction ... More Information

Brazil's US$1bn underwater tunnel project making waves among potential bidders

The first underwater road tunnel project in Brazil is attracting interest from multiple potential bidders, an official familiar with the matter ... More Information

Element Six and Master Drilling Announce Strategic Partnership for Advanced Tunnel

Achieving high quality, nonexplosive tunnel construction with various aspects of value generated compared to traditional rock excavation methods is a ... More Information

Tutor Perini Wins a $1.2 Billion NYC Contract

A joint venture of Sylmar-based civil construction firm Tutor Perini Corp. and its subsidiary Frontier-Kemper Constructors has won a $1.18 billion contract to construct a pair of rail ... More Information

Milestone reached for $1.6b Auckland wastewater tunne

Watercare's Central Interceptor project has passed an historic milestone with the southern half of the 16.2 kilometre tunnel – Blockhouse Bay ... More Information

Elon Musk's 'Wormhole' Tunnel Promises To Carry 20,000 People Per Hour In Dubai

It’s been more than eight years since Elon Musk decided he was fed up with traffic and declared he’d start digging tunnels to revolutionize public transport across the United States. So ... More Information

First tender for Dubai’s $22bn tunnels due within days

Dubai Municipality is expected to tender the first two packages of the $22bn Dubai Strategic Sewerage Tunnels (DSST) project imminently... More Information