Tunnelbuilder Promoting the world's tunnelling industry to a huge qualified audience

View the Spanish Tunnelbuilder website View the Italian Tunnelbuilder website

Archive - News

Featured News

Transition Completes the Silvertown Tunnel

Riverlinx CJV - the construction joint venture of Ferrovial Construction, BAM Nuttall and SK ecoplant working on behalf of Transport for London - completed construction works for the connections ... More Information

BTS 2024 Conference & Exhibition - Registration is open

The BTS 2024 Conference and Exhibition is the largest gathering of tunnelling professionals in the UK. Taking place on October 8th – 9th, 2024 at the QEII Conference Centre, Westminster, ... More Information

Hyperbaric excavation for the Casalnuovo tunnel on the HS/HC Napoli-Bari line

Webuild, which was awarded the contract by Rete Ferroviaria Italiana (RFI) for the Naples-Cancello lot of the Naples-Bari high-speed/high-capacity railway line, is using hyperbaric excavation ... More Information

Registration now open for ‘Open Days’ at the Modane construction site

Press release - For the first time, the Villarodin-Bourget/Modane underground construction site, where part of the Mont Cenis base tunnel, at the centre of the new Turin-Lyon railway line, is ... More Information

Italy/Sicily: TBM Margherita reaches 1 km of advancement on the Ogliastrillo-Castelbuono section

  At the beginning of May, the TBM Margherita (10 m in diameter and 140 m long) reached 1 km of advancement in the excavation of the odd-numbered track tube of the 6.87 km-long, ... More Information

Final breakthrough for Roseto 1 tunnel, Megalot 3, SS 106 in Italy

Final breakthrough for Roseto 1 tunnel, Megalot 3, SS 106 in Italy

On 10 May 2024 the last northbound piece of the twin-tube rock Roseto 1 tunnel (1.2km) was demolished. The tunnel will be completed using concrete and pre-cast concrete segments for the final ... More Information

Georgia - TBM Caucasus completes 9km tunnel for the Kvesheti-Kobi highway

Georgia - TBM Caucasus completes 9km tunnel for the Kvesheti-Kobi highway

On 23 May 2024 the single shield hard rock TBM, manufactured by CREG and named Caucasus, completed the excavation of the 9 km tunnel, connecting the village of Kvesheti with the village of Kobiin, ... More Information

Toulouse Metro - Line B connection

Work on the Connexion Ligne B is progressing! On Wednesday 15 May - after three months of work - the TBM Clemence Isaure - 30 m long, 5.28 m in diameter and reconditioned by the BESSAC company ... More Information

The ITA tunnelling awards 2024 - Call for entries

The 10th edition of the ITA Tunnelling Awards will take place in Genoa (Italy) on November 28, 2024 at the occasion of the ITA and SIG 50th anniversary celebration organized by the Italian ... More Information

Updates on Watercare Services Limited’s Central Interceptor Project

Updates on Watercare Services Limited’s Central Interceptor Project

In a significant milestone, the TBM Hiwa-i-te-Rangi, nearly 200 meters in length, has successfully breached into a shaft at a depth of 47 meters below ground. This achievement took place at the ... More Information

INTERMAT 2024: an edition driving progress and promoting business

The 2024 edition of the tradeshow, with its redesigned offering and format, registered over its four-day duration 127,500 entries, 21% of which from outside France and from 130 countries. A total ... More Information

TBM for Santiago metro line 7 begins operation in Renca

On Monday 06 May 2024 the ministry of transportation and Santiago metro witnessed the launch ceremony of the TBM EPB christened La Matucana, after an avenue in Quinta Normal municipality. The ... More Information

Sydney Metro – Western Sydney Airport tunnels on homestretch

Mega TBMs constructing the Sydney Metro - Western Sydney Airport southern tunnels are edging closer to their final destinations.     TBMs Eileen and Peggy have built 4.78 ... More Information

TERRATEC delivers another EPBM for Bangkok Metro Purple Line

TERRATEC delivers another EPBM for Bangkok Metro Purple Line

TERRATEC is pleased to announce the delivery of another new 6.39m diameter Earth Pressure Balance Tunnel Boring Machine (EPBM) for the construction of the Bangkok Metro Purple Line (C3). The event ... More Information

The North East Link TBMs to be named after ground breaking women

Help name - by nominating a local legend - the two massive TBMs (length 90 m, diameter 15.6 m and weight 4000t) that will start in 2024 building 6.5km twin tunnels from Watsonia to Bulleen for the ... More Information

Sydney Metro West - TBMs Beatrice and Daphne reach Burwood North

Sydney Metro West - TBMs Beatrice and Daphne reach Burwood North

On the 30th April two TBMs Beatrice and Daphne arrived at Burwood North station site as the 24-km Sydney Metro West twin tunnels connecting Greater Parramatta and the Sydney CBD continue to take ... More Information

Canada - TBM Elsie completed the Broadway subway project

Canada - TBM Elsie completed the Broadway subway project

On April 26, TBM Elsie arrived at Arbutus Station and completed her journey from the future station Great Northern Way-Emily Carr for the Broadway subway project in Vancouver. Click here and ca/38 ... More Information

New FAT tests completed for TBMs that will excavate the Lot 3 and Lot 4 of the Palermo-Catania link

New FAT tests completed for TBMs that will excavate the Lot 3 and Lot 4 of the Palermo-Catania link

On April 19,  another two TBMs - TBM#4 code DZ1379 and TBM#5 code DZ1380 - that will excavate Lot 3 Lercara - Caltanissetta Xirbi, in Sicily, successfully completed the FAT test in ... More Information

Eglinton Crosstown West Extension tunnel boring machine reaches finish line

Eglinton Crosstown West Extension tunnel boring machine reaches finish line

Press release - One of two twin tunnel boring machines digging the western underground segment of the Eglinton Crosstown West Extension has broken through the final ... More Information

Brazil - New milestone reached in the metro Line 2 expansion of the Sao Paulo

Brazil - New milestone reached in the metro Line 2 expansion of the Sao Paulo

On 20/04/2024 the TBM Cora Coralina which is building the 7.3 km tunnels for the metro Line 2-Green extension in Sao Paulo has reached the VSE Coxim shaft. The shaft is an intermediate shaft for ... More Information

USA - Milestone in the construction of the HRBT extension project

USA - Milestone in the construction of the HRBT extension project

On 17th April 2024 TBM Mary broke through the headwall on the North Island at Hampton, completing the first of the two road tunnels for the USD 4bn HRBT expansion project in Virginia. ... More Information

Nepal - Breakthrough in the Nagdhunga tunnel

On 15 April the Prime Minister Pushpa Kamal Dahal switched on the electric control for the breakthrough of the 2,688 m Nagdhunga tunnel connecting Sisnekhola of Dhading to Totipakha of ... More Information

The final Sydney Metro West TBMs have arrived

The final Sydney Metro West TBMs have arrived

Sydney Metro West is gearing up to build Sydney’s second under-harbour railway crossing with the final TBMs arriving on site. The two TBMs will carve out the 2.3-km twin tunnels from The Bays, ... More Information

HS2 launches fourth TBM under London building the Northolt Tunnel

HS2 launches fourth TBM under London building the Northolt Tunnel

On April 8th, 2024 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 Northolt tunnel, length ... More Information

Milestones for Eglinton Crosstown West Extension project

The Eglinton Crosstown West Extension project at Toronto has hit two major milestones - Rexy, one of the TBMs has completed 6 kms of tunnelling so far. The other TBM, Renny, has completed just over ... More Information

Central Interceptor TBM reaches 10-km milestone

Central Interceptor TBM reaches 10-km milestone

Hiwa-i-te Rangi TBM has reached the 10-km mark after leaving a site next to Mangere Wastewater Treatment Plant in August 2021, as she heads to Pt Erin, Herne Bay to build the 16.2-km Central ... More Information

TERRATEC delivers a new Rock EBP TBM for Mumbai Sewage Disposal Project

TERRATEC delivers a new Rock EBP TBM for Mumbai Sewage Disposal Project

TERRATEC has delivered a 3.14m Rock EPB TBM for the Mumbai Sewer Disposal Project (MSDP) Stage-II – PST2 in Mumbai, India by J Kumar and Michigan Engineers Private Ltd. (MEPL) Joint Venture ... More Information

Spain - Monte Plano tunnel excavation completed

Spain - Monte Plano tunnel excavation completed

On 27 March 2024, Adif AV completed excavation of the Monte Plano tunnel (1.9 km) on the Olite-Tafalla South section (7.6 km) of the high-speed rail corridor in Navarra. The tunnel - built using the ... More Information

Thames Tideway Tunnel now fully built after final lid lifted into place

Work to build the Thames Tideway Tunnel - the London’s super sewer - including its tunnels and shafts, is now fully complete following the lifting of a giant, 24m-wide circular concrete ... More Information

Canada - TBM Phyllis Crosses the Finish Line for the Broadway subway project

Canada - TBM Phyllis Crosses the Finish Line for the Broadway subway project

TBM Phyllis arrived at Cypress Street near the future Arbutus Station on March 20, completing her journey from the tunnel portal at the future Great Northern Way-Emily Carr Station. TBM Elsie is ... More Information

VTA’s Official TBM Naming Contest for the BART Silicon Valley Phase II Project is Live!

VTA’s BART Silicon Valley Phase II Extension Project is excited to announce the launch of its Official TBM Naming Contest for the machine that will bore the 8.05 km (5-mile tunnel) portion of ... More Information

Final breakthrough for the Chiltern tunnel, HS2’s longest tunnel

Final breakthrough for the Chiltern tunnel,  HS2’s longest tunnel

Cecilia, the second 2000 t TBM, reached northern portal of 16.09 km (10 mile) high-speed rail tunnel under Chiltern Hills completing a journey that began in June 2021: click here for the ... More Information

First tunnel started for Coffs Harbour bypass, Australia

First tunnel started for Coffs Harbour bypass, Australia

The Australian and NSW Governments are funding the EUR1.4 bn (AUD2.2 bn), 14-km Coffs Harbour bypass project in New South Wales (Australia). The Coffs Harbour bypass project includes the following ... More Information

Completed the EIA for Port expansion and port tunnel in Helsinki, Finland

Completed the EIA for Port expansion and port tunnel in Helsinki, Finland

The Environmental Impact Assessment (EIA) for the expansion of the Länsisatama Oy harbour in Helsinki and the harbour tunnel has been completed.  The expansion of the western harbour and ... More Information

Italy/Sicily - FAT passed for the TBM on Palermo-Catania Railway Lot 4A

Italy/Sicily - FAT passed for the TBM on Palermo-Catania Railway Lot 4A

The TBM EPB - 9.28 m diameter – which will be involved in the excavation of the new Palermo-Catania railway Lot 4A (Caltanissetta Xirbi - Enna section) passed its FAT at the Changsha ... More Information

Toulouse metro updates

Press Release - Catellan's Marguerite TBM delivered - On 29 February, Catellan's Marguerite, the third TBM of Line C of the Toulouse metro, was delivered. The first parts will reach the construction ... More Information

Tunnelling News

Montreal blue line metro tunnel boring machine has arrived, time to dig

It's basically building the backbone of the blue line extension,” said project chief Maha Clour, pointing out that crews have reached the bottom of ... More Information

Norway Unveils The World's Longest Road Tunnel In A Majestic Engineering Marvel

The construction cost broke down to about 38,000 NOK (roughly £3,500) per meter, an impressive figure considering the complexity and scale of the ... More Information

Sydney Metro West construction captured on video ahead of 2032 opening

Two giant tunnel boring machines have made their way through the deepest section of Darling Harbour as part of works on the new Metro West. More Information

Bengaluru's ₹18,000-crore tunnel road project inches closer as four major firms submit bids

Four firms bid for Bengaluru's ₹18000 crore tunnel project linking Hebbal to Silk Board, expected to ease city traffic by 2029 under a 34-year ... More Information

Webuild advances Rocchetta Tunnel excavation

Upcoming construction milestones. Webuild is preparing for the next major phase on the Apice–Hirpinia section: the launch of the reinforced concrete ... More Information

MMRDA plans 70-km underground tunnel road network across Mumbai

The project, being prepared in phases, will enhance multi-level connectivity and ease commuting. By KAILASH BABAR · Google preferences in ET Follow us ... More Information

Kathmandu-Tarai Expressway achieves 43.3% progress

The total length of the seven tunnels under the project is 10.979 km. ... Construction progress for the Chandram Bhir tunnel. (2,250 metres) has ... More Information

MMRDA plans 70-km underground tunnel road network across Mumbai

The project, being prepared in phases, will enhance multi-level connectivity and ease commuting. By KAILASH BABAR · Google preferences in ET Follow us ... More Information

Hong Kong: Robotics And AI Enhance Tunnel Construction

It is leveraging artificial intelligence (AI), robotics and automation to advance the Trunk Road T2 and Cha Kwo Ling Tunnel project. These ... More Information

Single-Bore Tunnel Method Chosen for BART Silicon Valley Phase II

This decision allows VTA to advance project design towards 60%, stay on a critical path to tunnel construction and meet the projected revenue service ... More Information

Boring Co. begins 'controlled blasting' for Nashville tunnel at TN capitol

The Boring Co. has started excavation work at a state-owned parking lot on Rose Parks Boulevard for the Music City Loop project Wednesday, Aug. 13, ... More Information

TBM arrives in Montreal for delayed metro extension project

A custom-built tunnel boring machine (TBM) has arrived in Canada for use on a 6km extension of the Montreal Metro... More Information

Spain Confirms Feasibility of €8.5 Billion Morocco-Europe Tunnel

The study was conducted by German company Herrenknecht, the world leader in tunnel boring machines, at the request of the Spanish government's ... More Information

TxDOT spends $748M to burrow bus-size tunnels under Central Austin

The first tunnel boring machine will be deployed near ... Industry experts say tunnel boring machines typically advance about 50 feet per day. More Information

6 TBMs on Duty on the 27-Kilometer Line in Körfezray

Two of the six Tunnel Boring Machines (TBMs) that will serve in the first 27-kilometer phase are actively excavating tunnels, while the ... More Information

Construction on HS2's Euston tunnel will start 'fairly soon', says rail minister

Construction on the HS2 tunnel from Old Oak Common station to Euston station will start “fairly soon”, the rail minister has said... More Information

Blue Line Extension TBM Arrives at Port of Montreal

Railway Track and Structures Construction site of the future Vertières station (Pie-IX) in June 2025. Caption and photo courtesy of STM. MONTREAL - The tunnel boring machine (TBM) ... More Information

Tunnel break through milestone for Mt Messenger Bypass project

A 110 tonne excavating machine, called Hinetūparimaunga, has broken through at the northern end of the project's 235 metre-long tunnel ... More Information

$3.9 billion tunnel and bridge link for VA

Costing around $3.9 billion, the Hampton Roads Bridge-Tunnel (HRBT) upgrade Expansion project for Virginia will improve traffic flow for a key ... More Information

Extended North Tunnel Flood Mitigation Project Receives $18.2 Million in State Funding

The funding advanced by the board includes a $17.2 million loan and $1 million grant for the construction of the mile-long tunnel, which will divert ... More Information

Gateway Project faces new uncertainty amid government shutdown

Federal funding for the $16B Hudson Tunnel Project, aka Gateway, has been paused during the government shutdown, sparking political backlash. More Information

Tunnel Boring Machine Emily Passes Key Factory Test for DC Water Potomac River Tunnel Project

Tunnel boring machine (TBM), Emily. This test confirms that Emily is ready to begin excavating the southern leg of the Potomac River Tunnel — a ... More Information

Sydney Metro West achieves world-first in tunnelling technology

Sydney Metro West has achieved a world-first in tunnel construction with a Lining Erector Machine (LEM) successfully being used to line the mined ... More Information

Gateway construction continues despite Trump's claim of termination

Tutor Perini, the general contractor on the Manhattan Tunnel Project, confirmed construction activity is currently continuing as planned... More Information

Tunnelling complete for Annacis water supply project

Metro Vancouver has completed the tunnelling phase of the $450 million Annacis Water Supply Tunnel, which will complete in 2028... More Information

Santa Clara VTA confirms single tunnel plan for BART extension

With VTA now owning the tunnel boring machine, the agency assumes full responsibility for its performance, agency officials said. To manage the risk, ... More Information

Chennai: Tunnel Boring Machine Vaigai achieves breakthrough at Mandaveli Metro Station

CHENNAI: The Chennai Metro Rail Limited (CMRL) on Saturday achieved a major milestone in Phase II tunnelling works, as Tunnel Boring Machine (TBM) ... More Information

Trump 'terminates' $16 billion Hudson River tunnel project linking N.J. and N.Y.C.

President Trump said funding for the $16 billion Gateway Tunnel project is "terminated" at a press conference. New Jersey officials said they will ... More Information

$676 million underwater tunnel for India

The project is expected to cost around $676 million, with a Detailed Project Report (DPR) having now been completed. India's road transport network is ... More Information

€1.4 billion Belgian tunnel project approved

The first phase of the €1.4 billion project for Belgium’s new Limburg Noord-Zuid link has been approved. Construction should commence in 2027 on the project, which will form a section of ... More Information

Tunnel boring machine S-639B achieves breakthrough under Kanpur Metro Phase I Project

The package KNPCC-06 involves design and construction of a tunnel through TBM, cut and cover tunnel, underground ramp from Kanpur Central end of ... More Information

Lawmakers propose construction of undersea tunnel to link Luzon and Visayas

Several lawmakers from the Visayas region are proposing the construction of an underground tunnel that will serve as a permanent land connection ... More Information

Oman-UAE rail project hits major milestone with start of tunnel excavation

Tunnel excavation has begun in Oman's Al Hajar Mountains, marking a major milestone for the cross-border Oman-UAE Railway... More Information

Engineering the depths: innovative tunnelling for hydropower projects

Major schemes in Austria, China, and Germany are applying advanced underground construction techniques for hydropower projects. More Information

New tunnel, new standard: Silvertown project showcases innovation in surface protection

Originally approved in 2018, construction of the tunnel began in March 2021. In September 2023, following the completion of tunnelling works, ... More Information

Metro Manila Subway Project: DOTr launches third tunnel boring machine

Dubai: The Department of Transportation (DOTr) has launched a third tunnel boring machine (TBM) for the Metro Manila Subway Project (MMSP), ... More Information

Skanska JV wraps up $450M Baltimore tunnel nearly 2 years early

A joint venture has reached substantial completion on the $450 million Howard Street Tunnel Project in Baltimore nearly two years ahead of the original completion date, according to a ... More Information

Work continues on NYC megaprojects, despite $18B federal funding pause

Contractors on two of New York City’s largest infrastructure projects will keep digging, but they might glance over their shoulders toward Washington... More Information

HS2 Chipping Warden tunnel project moves step forward

HS2 Ltd An aerial view of the HS2 tunnel construction at Chipping Warden. A road HS2 Ltd. The 1.55 mile (2.5km) Chipping Warden tunnel will be ... More Information