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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

Cabinet approves two corridors of Delhi Metro Phase-IV

The Union Cabinet chaired by Prime Minister Shri Narendra Modi approved two new corridors - 20.762 km totally - of Delhi Metro's Phase-IV project which are expected to further improve the Metro ... More Information

CRCHI uses innovative Underground Pipeline Network Equipment on Construction Sites

On February 7, a significant breakthrough was achieved at the construction site of the Bang Pakong-south Bangkok power plant gas transmission pipeline project in Thailand. The first section of the ... More Information

Final leg for two TBMs on the Broadway subway project

Final leg for two TBMs on the Broadway subway project

The Broadway Subway Project Corporation (BSPC) is extending the Millennium Line from VCC Clark Station to Arbutus Street. The Project scope includes 700m of elevated guideway extending west from the ... More Information

Australia - Halfway mark reached on Western Sydney Airport project

Australia - Halfway mark reached on Western Sydney Airport project

TBMs Catherine and Marlene are halfway to St Marys after each building 2.4 km of tunnel for the Sydney Metro - Western Sydney Airport project. They broke through at the Claremont Meadows ... More Information

Australia - News on Sydney Metro West project

Australia - News on  Sydney Metro West project

Press release - The first service tunnel to connect the 24-km Metro West line to a new stabling and maintenance facility at Clyde has been completed, ticking off another significant milestone for ... More Information

Start of the Rekalde Bypass project in Bilbao, Spain

Start of the Rekalde Bypass project in Bilbao, Spain

The Department of Infrastructures and Territorial Development has awarded to the joint venture comprising Typsa, Fulcrum and Tekia the EUR 5,805,580.06 (VAT included) the contract for the design of ... More Information

TBM Wilma is ready for the Brenner Base Tunnel

TBM Wilma is ready for the Brenner Base Tunnel

On 8 march 2024 BBT SE and H53 Consortium consisting of Porr Bau GmbH, Marti GmbH Austria and Marti Tunnel AG Switzerland completed the factory acceptance of Wilma. This will be the first of the two ... More Information

Grand Paris Express – Excavation of Line 16 completed

Grand Paris Express – Excavation of Line 16 completed

After more than four years of work and the use of seven TBMs, the tunnel of Grand Paris Express Line 16 is now fully excavated.  On Monday, 26 February 2024, the TBM Houda reached the Mare au ... More Information

The last HS2 TBM in the West Midlands starts digging towards Birmingham

The last HS2 TBM in the West Midlands starts digging towards Birmingham

On 05 March 2024 HS2 launched the last TBM to dig tunnels for the new high speed railway in the West Midlands. The 1,600 t weight and 125 m long TBM has started on its journey to dig the second bore ... More Information

Excavation of tunnel for Mularroya dam in Spain complete

On March 1, the joint venture Mularroya, composed of Acciona and Sacyr, celebrated the final breakthrough for the 12.6km-long water transport tunnel in the Mularroya dam project in the province of ... More Information

Excavation completed of Oural railway tunnel

Excavation completed of Oural railway tunnel

On 28 February 2024, Ferrovial on behalf of Adif completed the excavation using the drill&blast method of the new 1.9 km Oural tunnel (average advance was 5 m/day). The tunnel was built parallel ... More Information

CRCHI Slurry Pipe Jacking Machine Sets Sail for Colombia

CRCHI Slurry Pipe Jacking Machine Sets Sail for Colombia

In February, CRCHI (China Railway Construction Heavy Industry) completed assembly of its slurry pipe jacking machine in Changsha, China, successfully passing the acceptance inspection. This ... More Information

Call for Papers: World Tunnel Congress 2025 Focuses on Sustainable Future in Tunnelling

The World Tunnel Congress 2025 is excited to announce the Call for Papers for its upcoming congress to be held in Stockholm. Themed 'Tunnelling into a Sustainable Future,' the congress will ... More Information

Norway - Priority list for stone from Stad ship tunnel completed

The dimensions of the Stad ship tunnel are massive with a height of 50 m and a width of 36 m, in a length of 1,700 m. In total, more than three million cubic meters of solid rock must be removed ... More Information

Norway - Breakthrough was marked in the Åstunnel

 Norway - Breakthrough was marked in the Åstunnel

On 29 February at exactly 3 p.m a further breakthrough happened in the twin tube Åstunnel in Levanger municipality, on the E6 between Kvithammar and Åsen. Nye Veier is the ... More Information

Tunnelling News

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

London's Thames Tideway Tunnel now fully connected

After 10 years of construction work, the last of the 21 connections of the Thames Tideway Tunnel was made to the city's Victorian sewage system. More Information

Silvertown Tunnel

Silvertown Tunnel is the Transport for London project looking to forge a brand-new connection between Silvertown and the Greenwich Peninsula... More Information

Dubai Loop: Elon Musk to Build Huge Underground Road Network

Musk's The Boring Company, which is responsible for building a similar project in Las Vegas, aims to create 17 kilometers of tunnel capable of ... More Information

Wisconsin approves $4.5m tunnel lighting project

Wisconsin Governor Tony Evers has approved a $4.5m lighting systems upgrade project in various tunnels in Milwaukee County, Wisconsin. More Information

$1.18bn Manhattan Tunnel contract awarded as part of $16bn Hudson Tunnel Project

The Hudson Tunnel Project is the key section of the Gateway Programme, which is a comprehensive rail infrastructure investment aimed at boosting ... More Information

North East Link continues to forge ahead towards completion

Tunnelling will soon commence on Victoria's longest twin road tunnels – the North East Link tunnels – as two massive tunnel boring machines (TBMs) are ... More Information

Africa's huge £8.5m tunnel cuts up to 26 minutes off journeys to major capital city

The tunnel is to be constructed within the next three years. This project will not only create 500 jobs in the construction ... More Information

CMRL's tunnel boring machine from Panagal Park reaches Kodambakkam station after a year

Chennai Metro Rail's Phase II Project faces delays as tunnel boring machines 'Pelican' and 'Peacock' progress towards Kodambakkam... More Information