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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

CRCHI video

New CRCHI video for world leading underground equipment - Technology innovates the world... More Information

Deer Creek update

Exciting update from the Deer Creek project team! The Wasatch Worm is almost in the ground and will be ready to start tunneling this week. Over the next few months, it will be devouring a ... More Information

Stonehenge tunnel: Underground cabling installed, while other enabling works paused

The scheme, which involves the construction of a new 12.8km two-lane dual carriageway with a 3.2km tunnel under the Unesco World Heritage Site, was ... More Information

Nepal's first transport tunnel being built with Japanese assistance

Nepal and Japan signed the contract for construction of the tunnel on September 23, 2019, while the commencement started on November 14, 2019. More ... More Information

Cowi selected as technical advisor on world's first ever ship tunnel proposed in Norway

Construction is currently estimated to begin next year. The objective of the Stad Ship Tunnel project is to improve the navigability and safety of ... More Information

How Arnold Dix became a Himalayan hero after rescuing 41 workers from Indian tunnel collapse

Arnold Dix slid his hand into a gap in the rock at the entrance to a tunnel where 41 men were trapped alive, put his back against the cold stone and listened, and felt, and listened some ... More Information

Central Interceptor Tunnel Boring Machine

Watercare Services Limited’s Central Interceptor Tunnel Boring Machine, Hiwa-i-te-Rangi, has achieved a significant milestone, reaching 10,000m (10 kilometres) since leaving Māngere in ... More Information

New tunnelling machine joins three others digging high-speed line under London

Construction of the new HS2 line has hit another major milestone with the launch of the fourth – and final – machine being used to build the giant Northolt Tunnel beneath the capital... More Information

Lower Thames Crossing planning decision moves a step closer

On 21 March, the Planning Inspectorate confirmed that the Examining Authority has sent their recommendation report on the Lower Thames Crossing Development Consent Order (DCO) application ... More Information

AECOM-Jacobs JV signs on to $6B Amtrak tunnel job

Amtrak is gearing up to dig deep in Baltimore. The railroad company selected ADVANCE, a joint venture between Dallas-based infrastructure firms AECOM and Jacobs, to serve as the delivery ... More Information

Lower Thames tunnel boosts new orders data

UK construction contract awards reached their highest level in February 2024 for seven months, according to one of the industry's data monitoring ... More Information

The incredible new £53m tunnel in Spain linking two pretty cities

The work is part of efforts to modernise the railway line between Ourense and Lugo in the autonomous Galicia region. Spanish construction giant ... More Information

ECRL hits new milestone with the completion of three tunnel excavations in Bentong district

The ECRL project features the construction of 41 tunnels with a total length of approximately 69 km along its rail alignment. Section A (Kota Bharu- ... More Information

Boring Co. receives go-ahead to drill more Vegas Loop tunnels

LVCVA President and CEO Steve Hill offered the company access to safety officers after the company was fined $100000 for construction violations ... More Information

Biden-Harris Administration Announces Nearly $4 Billion in Support

The project includes construction of a new two-track heavy rail tunnel along the Northeast Corridor from the Bergen Palisades in New Jersey to ... More Information

World's Longest Twin-Lane Tunnel Inaugurated In Arunachal Pradesh

Constructed by the Border Roads Organisation (BRO) for INR 825 crore, the tunnel is strategically vital due to its proximity to the Line of Actual ... More Information

The £13.3bn tunnel 8.5 miles long that could transform one of the world's biggest cities

The Second Avenue Subway's per-mile construction cost is higher than that of other projects in similar cities like London's Crossrail and Paris's ... More Information

First look inside Silvertown tunnel as TfL confirms summer 2025 opening

... tunnel construction in the face of environmental concerns. Construction is costing about £1bn – with a further £1.2bn due in annual repayments ... More Information

Consortium of Aecom and Arcadis appointed to tunnel and station design contract for Ontario metro

The scope of work for the PTUS contract includes construction of 3km of twin tunnels underneath Pape Avenue between the Gerrard tunnel portal and ... More Information

Snowy Hydro is inching towards powering the nation

... tunnelling progress of one of its critical boring machines ... Some 80 metres underground in temperatures well in excess of 30C, tunnel boring machine ... More Information

Judge rejects challenge to £1.7bn Stonehenge Tunnel

The High Court has thrown out a case brought by campaigners against the £1.7bn Stonehenge Tunnel project. Mr Justice Holgate said most of the ... More Information

9 of the longest underwater tunnels in the world

These stations are the first railway stations constructed under the sea and serve as emergency escape points in case of a disaster. Today, the Seikan ... More Information

EPC contractors sought for Dubai's £17bn sewer tunnels project

The strategic sewerage tunnels project by Dubai Municipality known as the Deep Tunnels Portfolio will involve the construction of wastewater assets ... More Information

The $7BN Mega-Tunnels You've Never Heard Of

But thanks to some incredible underground construction methods, Antwerp is now on course to complete a massive piece of infrastructure it's been ... More Information

3 listed & 2 Unlisted get LOA to build Mumbai Coastal Road Ext

The underground tunnel will run below Malad and Kandivali through the Mangrove creeks and a tunnel boring machine (TBM) will be used for this phase. More Information

New tunnel planned to under the Thames at Tilbury and Gravesend

ianVisits ... tunnel (c) National Grid. Construction will be done by a conventional tunnel boring machine (TBM), which will launch from a 41-metre deep shaft dug ... More Information

Third tunnel breakthrough on Guildford sewage works

A micro-TBM recently broke through on a new tunnel being built for Thames Water's project to relocate sewage treatment works in Guildford. More Information

Japan maglev train project being derailed by Shizuoka stalemate

Opposition in Shizuoka Prefecture emerged from fears the planned tunnel construction for the line could adversely affect the overall volume of water ... More Information

World's most expensive tunnel that ended up costing a whopping £2.3m a day to build

Over 5000 construction workers were employed to complete the Central Artery/Tunnel Project in the United States. More Information

Underground or Elevated Metro Rail – Which One is Better for India?

The cost of tunnel boring machines (TBM) is another significant component. The tunneling cost can be reduced by making longer tunnel contract ... More Information

From Undersea Tunnel To Station Redevelopment

The NHSRCL will construct an adjoining tunnel location as part of the package. To construct this tunnel, the Tunnel Boring Machines (TBMs) with a ... More Information

Second tunnel boring machine for Broadway Subway reaches South Granville Station

The tunnel boring machines will end their journey just before Arbutus Station, which spans two city blocks, with the west block used as the footprint ... More Information

BESIX-MTH awards Nordhavn work to Bravida

... construction of the Nordhavn Tunnel. By & Havn is tasked with developing Ørestad and the port of Copenhagen and runs the daily operations of the ... More Information

After India's first undersea tunnel, Mumbai to get its longest intra-city underground road

... construction with viaducts and modern safety measures. The Coastal Road tunnel is India's first undersea tunnel, constructed using a 12-metre ... More Information

3,200 tonne TBM delivered to France-Italy rail tunnel project

A tunnel boring machine (TBM) manufactured by German tunnelling and mining firm Herrenknecht has been delivered to the Lyon-Turin Mont Cenis base ... More Information

FPT Industrial engines power the construction of the longest immersed tunnel in the world

The construction of the Fehmarnbelt tunnel is an important addition to Europe's sustainable transport network of the future. It will offer the ... More Information

Work resumes at Silkyara tunnel after 2 months

On the instructions of the Union Ministry of Road Transport and Highways, construction work of protective nature has begun from both Barkot and ... More Information

Webuild Joint Venture awarded Pape Tunnel and Underground Stations Progressive DB contract

Webuild will lead a joint venture to develop the project for the "Pape Tunnel and Underground Stations (PTUS)" section of the Ontario Line, the new rapid transit line that will run through ... More Information

Third Tunnel Boring Machine Lowered at Panagal Park

In a significant milestone for the Chennai Metro Phase 2 project, the third Tunnel Boring Machine (TBM) has been successfully lowered at the ... More Information