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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

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

Tunnelling News

Light at the end of the tunnel showing for Mount Washington transit project

The project is expected to be completed in October. New tracks finally emerge from the Mount Washington Transit Tunnel as a part of Pittsburgh ... More Information

Davao City Bypass South Tunnel hits breakthrough towards improved connectivity

The Construction Project with the ceremonial breakthrough of the southbound tunnel, marking the complete excavation from opposite ends of the ... More Information

Which companies are bidding for the US$2.3bn highway and tunnel contracts in Brazil?

The project in Brazil, as it will be the country's first underwater tunnel,” the person added. The project involves construction of a 1.5km tunnel ... More Information

US Northeast Rail Corridor Gets a Major Makeover with Tunnel and Bridge Replacements

This project is designed to replace tunnels severely damaged by Superstorm Sandy, ensuring smoother and more reliable service for Amtrak, NJ Transit, ... More Information

DPWH, JICA celebrate breakthrough of Southbound Tunnel in Davao Bypass

The event marked the successful connection of the tunnel's north and south ends. The ... More Information

Jacobs joins Ramboll on Marselis road tunnel project in Denmark

Danish Road Directorate senior project manager Michael Schmidt Vosgerau said: “It is a complex task to build a tunnel on one of the busiest access ... More Information

Planning continues for Midway Tunnel, Safe Streets for All projects

The Midway Tunnel project is a $13.4 million plan ... construction of a new overpass bridge and pedestrian and bicycle walkway above the tunnel. More Information

Four million tons of clay moved in HS2 excavation

Construction on HS2's second-longest tunnel started in October 2022. The rotating cutters cut away clay and other material at a rate of about 50ft ... More Information

Jacobs Has Design-CM Role on $640M Denmark Tunnel, With Ramboll as Key Consultant

Set to begin construction in 2028, Marselis Tunnel project is core component of the country's 10-year Infrastructure Plan 2035. By Emell D. Adolphus. More Information

Elon Musk's $760,000,000 plan to build underground tunnels beneath Houston, Texas

Elon Musk's next big construction plan from The Boring Company could build $760000 worth of tunnels beneath Houston to help with flooding... More Information

Kerala Moves Closer To Vizhinjam–Balaramapuram Tunnel Rail Project

The Kerala government is preparing to invite bids next month for the tunnel rail project linking Vizhinjam International Seaport with ... More Information

Norway's Ship Tunnel Project Under Threat as Costs Rise

New cost estimates suggest the ambitious project will far exceed its approved budget, raising questions about whether it will ever be built. More Information

Davao City Bypass southbound tunnel nears breakthrough

The Department of Public Works and Highways (DPWH) announced that the southbound tunnel of the Davao City Bypass Construction Project (DCBCP) is ... More Information

CA should pursue better alternatives to the costly Delta Tunnel Project Stocktonia

Governor Gavin Newsom is attempting to fast-track the construction of a massive, budget-busting water tunnel through the Delta to ship freshwater to ... More Information

Physical Origins of Shear Strength Fluctuations in Fault Gouges

Fault gouge is rock texture within fault zones that may include rock fragments (RF) and foliated structures. Previous studies have primarily focused on remould soils, the natural structure ... More Information

Webuild expands its role in high-speed rail projects

Four modern tunnel boring machines will be deployed to ensure precision and safety in complex geological conditions. Once completed, the old single- ... More Information

Hudson Tunnel Project advances as tunnel boring machines near completion

The Hudson Tunnel Project hit a key milestone as massive tunnel boring machines near completion, with delivery set for November. More Information

Nagdhunga tunnel in final stages of construction

If we look at the history of road construction and development in Nepal, there are various records of road construction starting from the Rana period. According to articles published in ... More Information

Boring of tunnel across Yellow River completed in China's Shandong

Constructed by using a "Shanhe" shield machine with a 17.5-meter excavation diameter, this double-deck, two-way, six-lane tunnel stands as the world's ... More Information

The £1.6bn plan for world's deepest underwater road tunnel leaving 'no room for error'

Opening of Rogfast tunnel under construction. The Rogfast tunnel will be the longest and deepest undersea road tunnel on Earth. (Image: SKANSA). A ... More Information

Tunnelling complete on NSW's Coffs Harbour bypass project

Tunnelling has been completed on the A$2.2bn (£1.1bn) Coffs Harbour bypass project in New South Wales, Australia, with the excavation of the third ... More Information

Veidekke acquires tunnel construction contract for Gothenburg's West Link Project

Veidekke has received a contract from the Swedish Transport Administration to build the Stora Hamnkanalen tunnel, a component of the West Link ... More Information

German Rail completes construction of Rastatt Tunnel

GERMAN Rail (DB) has completed civil works on the new 4270m twin-bore Rastatt Tunnel, a major component of the project to widen to four tracks the ... More Information

Final contracts signed for Eastern Freeway transformation

A huge amount of work is underway to build North East Link and upgrade the freeways – two tunnel boring machines are digging deep under Rosanna ... More Information

Progress on Sydney pipeline duplication

Bouygues Construction Australia and Rob Carr have launched a tunnel boring machine (TBM) on Sydney Water's Thornleigh pipeline duplication ... More Information

The latest plan to connect BART to downtown San Jose: One tunnel rather than two

When BART and Santa Clara Valley Transportation Authority first discussed plans to send trains rolling under downtown San Jose, transit officials contemplated a design with two tunnels ... More Information

Nashville Tesla tunnel: Here's when construction could start on the Music City Loop

Elon Musk's The Boring Company is currently in the design phase of constructing a tunnel connecting downtown Nashville to the Nashville ... More Information

World's longest underwater 'mega tunnel' to cost $46 billion but will halve 21-hour drive

Oddvar Kaarmo, the Rogfast project manager, cited additional motivation for the tunnel's construction: "The port at Mortavika is quite exposed and ... More Information

China's first vertical large model for tunnel, underground space sector released

The project which is in the Guangdong-Hong Kong-Macao Greater Bay Area. The model helps make tunnel construction safer, higher-quality, more efficient and ... More Information

BMC Begins Major Water Supply Upgrade Mumbai

The project commenced in 2023 and has adopted tunnel boring machine (TBM) technology to minimise surface disruptions in crowded neighbourhoods. Of ... More Information

Slurry tunnel boring machines to be deployed for Bengaluru Twin Tunnel Road Project

B-SMILE opts for slurry TBMs over hard rock TBMs for Twin Tunnel Road project in Bengaluru due to mixed terrain... More Information

Tunnel along railway linking Shenzhen and Shanwei special cooperation zone under construction

Technicians check a tunnel boring machine (TBM) at the construction site of a tunnel in Pingshan, Shenzhen City, south China's Guangdong Province, Aug ... More Information

Construction staging area approved for Nashville's airport tunnel project

The Music City Loop will be a 10 mile tunnel connecting downtown Nashville to the Nashville International Airport (BNA)... More Information

Zojila tunnel deadline pushed to 2028: Here's why Asia's longest tunnel project is delayed

Zojila Tunnel Latest Update: On completion, the project will not only play an important role in the country's infrastructure development but also ... More Information

W.A. Rasic Construction Awarded Major Subcontract on Dragados' $630M Effluent Outfall

The tunnel project is a critical component of Southern California's long-term infrastructure resilience strategy. The project directly supports the ... More Information

VDOT gives HRBT expansion update

Construction on the Hampton Roads Bridge-Tunnel Expansion Project hit key milestones as tunneling progresses and traffic shifts to new lanes. More Information

HS2 lifts third TBM following 3.4-mile journey

HS2 Ltd has lifted Tunnel Boring Machine Emily's 9.11-metre diameter cutterhead, front and middle shield, weighing 880 tonnes, from below the ... More Information

Musk's Boring Company unveils Music City Loop tunnel project for Nashville

The big picture: The project has an ambitious timeline of completing the 10-mile route in less than two years. The tunnel would move vehicles at warp ... More Information

Progress Update on East Dallas Tunnel Project to Address Flooding Problems

With so much rainfall throughout the metroplex, NBC 5 wanted an update on a project expected to mitigate flooding in East Dallas... More Information