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Sofia metro extension underway

Sofia metro extension underway

On 25.04.2013 construction started on Stage III of Line 1 Metro extension Mladost 1-Business Park-Mladost 4 in Sofia, Bulgaria. More Information

Poltinger sponsors tunnelbuilder.com

Poltinger sponsors tunnelbuilder.com

It is always a great day at tunnelbuilder when one of its established clients steps up to sponsor our flagship website. More Information

Robbins holes at Pahang Selangor

Robbins holes at Pahang Selangor

The first of three 5.23 m-diameter Robbins Main Beam TBMs has holed on the 44.6 km-long Pahang Selangor water transfer tunnel in Malaysia More Information

Blue Plains Tunnel TBM

On 09.04.2013 the District of Columbia Water and Sewer Authority (DC Water) named its massive Blue Plains Tunnel TBM Lady Bird, More Information

Meditunnel 2013 in Croatia

The symposium on tunnelling in the Mediterranean region takes place 7-8th May, 2013 in Porec on the Adriatic coast of Croatia More Information

ISTSS 2014 calling

Call for papers for the 6th International Symposium on Tunnel Safety and Security, ISTSS 2014, to be held at World Trade Centre (WTC) in Marseille, France, 12-14th March, 2014. More Information

Coatzacoalcos elements immersed

Coatzacoalcos elements immersed

On 11.03.2013 and 21.03.2013 the first and second elements of the 1.6 km-long Coatzacoalcos River tunnel in Veracruz, Mexico were successfully immersed. More Information

Phyllis reaches Bond Street

On 25.03.2013 TBM Phyllis reached the south end of the new Crossrail Bond Street western ticket hall at Davies Street, having constructed 2,000 tunnel rings and completed 3.2 km of new tunnels. More Information

More safety of the Frejus trans-European tunnel

The European Investment Bank (EIB) has made a tangible commitment to the cross-border Frejus Tunnel project in the form of a EUR120 million loan. It will enable a second tube to be built alongside the existing tunnel connecting Piedmont to Savoie. More Information

Gotthard Base Tunnel test runs

From April, 2013 rail tracks in both tubes of Gotthard Base Tunnel, for 20 km between Erstfeld and Sedrun, will be fully installed. More Information

EIB funds Warsaw Metro

The European Investment Bank (EIB) is lending EUR238 million towards the construction of the 6.7 km-long central section of Warsaw’s new metro line. More Information

ES Rubber in Gdansk

Twin 1.1 km-long, 12.2 m-diameter TBM-driven tunnels under the Vistula River in Gdansk, More Information

Metrorail kicks off in Madrid

The three-day Metrorail conference opens at Hilton Madrid Airport Hotel on Tuesday, 9th April More Information

Important visitors to Bauma

Some very important people will be attending Bauma in Muenchen later this month from 15-21 April. More Information

Devil’s Slide tunnels open

Devil’s Slide tunnels open

On 26.03.2013 the California Department of Transportation (Caltrans) officially opened the northbound and southbound Highway 1-Devil’s Slide Tunnels to traffic overnight. More Information

Follo Line from Oslo to Ski

The new 22 km-long double track Oslo-Ski line is part of the Follo project, which comprises 64 km of rail track. Preliminary works will start in 2013, and the contract for the 19.5 km-long twin tunnel will be tendered soon afterwards. More Information

The Northgate Link Extension

The Northgate Link Extension construction began in late-2012 with demolition of the Roosevelt Station site. More Information

SR 99 TBM docks in Seattle

The 41 parts that comprise the world’s largest EPB, with a 17.45 m diameter and weighing 7,000 t, arrived in Seattle, US from Osaka, Japan on 02.04.2013. More Information

Milan metro double

Milan metro double

On 26.03.2013 twin Herrenknecht EPBs owned by Astaldi simultaneously reached Pozzo Parco in the CityLife area having started from San Siro Harar–Dessie in April, 2012. This completed the 3 ... More Information

Saverne second tube complete

On 25.02.2013, TBM Charlotte, diameter 10 m, length 110 m, weight 2,220 tons, broke through the second tube of the 4,020m Saverne tunnel driving east-west. More Information

Rome Line C construction

Construction of the 3 km-long T3 section, San Giovanni - Fori Imperiali/Colosseo, Line C of the Rome metro will start in April, 2013. More Information

Pir Panjal tunnel opening

Pir Panjal tunnel opening

The 10.96 km-long, 8.40 m-wide, 7.39 m-high Pir Panjal railway tunnel on the Banihal-Qazigund section of J & K railway line is the India’s longest and Asia’s second largest. More Information

EasyJoint from G&G

EasyJoint from G&G

G&G Partners is a modern and dynamic company located in northern Italy, established and run by qualified managers in the ventilation field for tunnelling and mining applications. More Information

Meet iPS at Bauma

Meet iPS at Bauma

The iPS tunnelling team will be at Bauma, Muenchen from April 15-21 in Hall C, booth 529 to advise visitors on current and future employment More Information

Call for papers ISTSS 2014

Call for Papers for the 6th International Symposium on Tunnel Safety and Security (ISTSS 2014), to be held at World Trade Centre (WTC) in Marseille, France, 12-14th March, 2014. More Information

Italy tops tunnelbuilder league

This week saw the opening of tunnelbuilder file it/200, a landmark indicating that Italy has started more projects than any other country over the last fifteen years. During the same period, we reported 187 large projects in Norway and 171 in Spain. More Information

Air cushion carrier from Palmieri

Air cushion carrier from Palmieri

The innovative air cushion based carrier system Airmover 3000, conceived, designed and manufactured by Palmieri Group, was used for the first time to shift 3000 t TBM Martina at Sparvo More Information

Caterpillar at Toronto Metro

On 05.03.2013 the 6.12 m-diameter Caterpillar TBM EPB, nicknamed Moley, broke through the headwall of Downsview extraction shaft in the city of Toronto, More Information

Kathmandu-Hetauda postponed

The Nepal Infrastructure Development Company (NIDC) that conducted the detailed project report (DPR) of the Kathmandu-Hetauda tunnel highway couldn’t come up with convincing plans for a concession agreement with the government. More Information

CIPE funds new lines

CIPE funds new lines

On 08.03.2013 CIPE approved the final design for the first phase of technological and infrastructural alignment of the Battipaglia-Reggio Calabria railway in Italy, amount EUR157.4 million. More Information

Sesto-Monza metro extension

The JV Coestra/Bonciani/ACMAR of Florence was awarded the contract for the 1.8 km-long Line 1 metro extension from Sesto FS to Monza, in Italy. More Information

Tunnel safety and fire protection

Conference scheduled 4-5th June, 2013 for Brisbane, Australia will examine risk management, emergency response and fire prevention in tunnels. More Information

Kathmandu-Hetauda Tunnel Highway

Kathmandu-Hetauda Tunnel Highway

The Nepal Ministry of Physical Planning, Works and Transport Management will sign the final agreement with the Nepal Purbadhar Bikas Company (NPBC) More Information

Last chance for ExpoTunnel deal

Last chance for ExpoTunnel deal

ExpoTunnel, scheduled for Bologna, Italy from October 17-20th, 2013 is offering favourable reservation rates until end-February on all applications received by end of business on that day More Information

Strabag and Rio Tinto in partnership

Global mining company Rio Tinto, in cooperation with TBM manufacturers, recently developed two new tunnel boring systems (TBS) and one shaft boring system (SBS). More Information

Breakthrough at El Alto hydro

Breakthrough at El Alto hydro

The main underground structures on the new El Alto hydropower plant in Chiriqui province of Panama, in the district of Renacimiento near the Costa Rica border, More Information

Tunnelling News

Tesla Cybertruck escorts Boring Co's Prufrock-3 tunnel boring machine

The Boring Company's Prufrock-3 tunnel boring machine (TBM) recently completed a tunnel to Giga Texas, and in true Elon Musk fashion, ... More Information

Kazakhstan’s First Automobile Tunnel and Largest Bridge to be Completed this Year

As reported by the Kazakhstan’s Ministry of Transport, Kazakhstan’s first automobile tunnel through the Shakpak Baba Pass and the country’s largest bridge over the Bukhtarma Reservoir ... More Information

HRBT Expansion Project hits big milestone, could be on track for early completion

The tunnel boring machine, known as Mary ... construction of our two new bored tunnels,” said Project Director Ryan Banas... More Information

TBMs Pass Factory Test For Lesotho Highlands Water Project

A team of engineers and tunnel experts from the Lesotho Highlands Development Authority (LHDA) together with consultants and contractors working on the Polihali transfer tunnel recently ... More Information

Royal Cargo opts for Goldhofer heavy transport equipment

It has also been in action moving tunnel boring machines (TBM) for the Metro Manila Subway project ... machine part posed a significant challenge due ... More Information

Tunnel breakthrough on NI Water's £7.8M Portadown wastewater project

The tunnel boring machine excavated roughly 1,000m3 of material, which would have risen to 8,000m3 of spoil with a more traditional open-cut method. More Information

The Boring Company announces Cybertunnel at Tesla Texas HQ

In January, the company's latest tunnel boring machine (TBM), Prufrock 3, was first spotted near Tesla's Giga Texas. Prufrock-3 has ... More Information

How do you build tunnels and bridges underwater?

Underground construction usually uses powerful tunnel-boring machines to excavate soil directly. This machine is often called a mole for a reason. More Information

Five Huge New Construction Projects Coming To The US

A spokesperson for the project told Newsweek: "The Hudson Tunnel Project is a generational investment that is expected to create 95,000 new jobs and ... More Information

Chennai Metro Corridor 3: Adyar River Tunnel Work Hampered By Geological Setbacks

For the stretch between Greenways Road and Adyar, CMRL engaged two TBMs, 'Kauvery' and 'Adyar.' These machines were launched from Greenways Road ... More Information

French and Danish firms to build Valby 'cloudburst tunnel'

The underground tunnel will be 2,380m long and will be constructed as a drilled tunnel with an internal diameter of 3.4m. The tunnel will have the ... More Information

Howard's approved budgets include $44.9M for Ellicott City tunnel

The Howard County Council has approved a $2.4 billion operating budget for fiscal 2025, along with a $413 million capital construction budget that ... More Information

DC Water Breaks Ground On Potomac River Tunnel Project

DC Water on May 21 hosted a groundbreaking ceremony to officially commence construction activities for the Potomac River Tunnel Project... More Information

Silvertown Tunnel portal connections completed

A complete transformation of the tunnel shape was needed to connect the circular tunnel boring machine (TBM) constructed ... More Information

The $4BN Tunnel to Save Stockholm - The B1M

Above: A tunnel entrance under construction. When it completes in 2030, the $4BN project will be one of the longest road tunnel systems in the world. More Information

OHLA awarded the Gjønnes tunnel in Norway for nearly 160 million euros

The Norwegian Public Roads Administration (Statens Vegvesen) has awarded the company the design and construction of the Gjønnes tunnel for 156 ... More Information

Utilities tunnel dug through 'challenging' ground conditions under River Tees

Main contractor Farrans Construction worked with specialist contractor Joseph Gallagher to construct the tunnel. During its five weeks of tunnelling ... More Information

China develops world's first boring and blasting machine

In a groundbreaking development, the world's first boring and blasting machine, jointly developed by Tsinghua University and China Railway Science and Industry Group, has successfully ... More Information

Tunnel boring machine wedged in hard rock, leaving Snowy 2.0 hydropower project with new issues

Tunnelling problems are plaguing the $12 billion Snowy 2.0 hydropower project, with a boring machine previously bogged in soft ground now wedged in ... More Information

Construction Complete On New High-Speed Rail Tunnel

Inside the completed Desheng Tunnel, and inset, a Chinese high-speed train. Work on the project is now complete. © China ... More Information

DC Water Breaks Ground on Potomac River Tunnel Project

The Project consists of a large-diameter deep sewer tunnel, diversion facilities, drop shafts, and support structures to capture flows from existing ... More Information

Morocco’s proposed $13 billion underwater tunnel to connect Europe to Africa by 2030s

An historic intercontinental rail link is aiming to link Europe to Morocco with an ambitious underwater tunnel. The Moroccan National Company for Strait Studies (SNED) announced last ... More Information

Government set to fund £1bn final HS2 London tunnel drive

The project was halted as part of Prime Minister Rishi Sunak’s £6.5bn cost-cutting plan announced last October. This involved axing phase 2 to Manchester and finding a private investor ... More Information

HS2 Project Update, May 2024

Our Victorian railways have carried us successfully through history, but with passenger numbers continuing to rise, investing in new, modern railway lines like HS2 is the key to meet the ... More Information

PM inaugurates breakthrough of Sunkoshi Marin Diversion tunnel

A breakthrough of the Sunkoshi Marin Diversion Multi-purpose Project tunnel has been made... More Information

Toronto's Eglinton Crosstown extension moves closer to tunnelling completion

The project is being delivered by Infrastructure Ontario and Metrolinx. West End Connectors was awarded the C$729M (£425M) contract to design, build ... More Information

_Fehmarnbelt tunnel program hits major milestone

DEME Group said that the Fehmarnbelt tunnel project, one of Europe's largest infrastructure projects, has achieved a significant milestone with ... More Information

The incredbile new £12bn mega-tunnel that could end traffic chaos in world famous city

Construction on the £12.63 billion mega-tunnel has already begun and it is expected to be open in 2035. · Animation for The Hudson River Tunnel project. More Information

Great Lakes Tunnel Project makes progress

Ready to move forward. Enbridge is preparing to begin tunnel construction as soon as possible, following receipt of environmental permits ... More Information

Hudson Tunnel Project is expected to create 95,000 jobs

The report is based on research done on behalf of the Gateway Development Commission. “The Hudson Tunnel Project is the most pressing infrastructure ... More Information

The $2.8BN Megaproject Dividing London

London is building a controversial new tunnel under the River Thames. Head to https://brilliant.org/TheB1M/ for a 30-day free trial + the first 200 people will receive 20% off their ... More Information

Namma Metro: Underground tunnel work on Pink Line 95% complete

This underground portion includes the ambitious task of constructing 20.992 km of twin tunnels. Progress is also underway on the construction of 18 ... More Information

How an ancient water tunnel design is cooling 21st-century streets

In Seville, 3,000-year-old underground technology is being transformed in modern day air-conditioning. An aqueduct at the unopened CartujaQanat pilot ... More Information

Frederick Douglass Tunnel Program B&P Tunnel Replacement Project

Project Description: Proposed utility and roadway relocations include civil work to support the construction of Amtrak's Frederick Douglass Tunnel. More Information

Fehmarnbelt | Purpose-built vessel arrives to line tunnel trench with gravel 'cushion'

The Fehmarnbelt Fixed Link is a new road and rail tunnel being constructed between Denmark and Germany. It will comprise 89 precast concrete ... More Information

Successful Breakthrough of Gudauri Tunnel in Georgia's North-South Corridor KK Highway Project

KAZBEGI, Georgia, April 23, 2024--The 10-kilometer LOT1 Section is constructed by China Railway Tunnel Group Co., Ltd., of which the Gudauri ... More Information

Construction of Shinku La Tunnel to bolster all-weather connectivity in Ladakh Rising Kashmir

Leh, Apr 21: Member of Parliament from Ladakh, Jamyang Tsering Namgyal, announced that work on the strategically vital Shinku La Tunnel is set to ... More Information

Tunneling works for key Davao bypass road seen completed this year

The Davao City Bypass Construction Project is among the 14 foreign-assisted infrastructure projects approved by the National Economic Development ... More Information

Hamptons Subway Cuts Ribbon on New Foxwoods Tunnel

Hamptons Subway, with U.S. Transportation Secretary Pete Buttigieg, cut the ribbon to begin construction of the new tunnel from Sag Harbor to ... More Information