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HS2 lifts third giant TBM in London after 5.47 km (3.4-mile) underground journey

On Saturday 26th July, the team working on the HS2 project lifted the TBM Emily's 9.11m diameter cutterhead, front and middle shield, weighing 880 t, using a large gantry crane, at the Green Park ... More Information

HS2 completes excavation of the Norton tunnel under London

HS2 completes excavation of the Norton tunnel under London

Excavation of the  twin-bore Northolt tunnel between West Ruislip at the outer edge of the capital and the new Old Oak Common super-hub station in west London has been completed. On 26th June ... More Information

Press release - Third HS2 tunnelling machine completes its drive beneath London

Press release - Third HS2 tunnelling machine completes its drive beneath London

HS2’s tunnelling team in London is one step closer to completing the capital’s Northolt Tunnel after the latest in a series of complex tunnelling breakthroughs. The tunnel boring ... More Information

The giant HS2 TBM Mary Ann to be given a new lease of life

After completing the 3.5-mile (5.8km) mission to excavate the first section of the Bromford tunnel, linking North Warwickshire and Birmingham, HS2’s giant TBM Mary Ann is being stripped down ... More Information

HS2 lifts TBM Caroline from below ground at the Green Park Way site in Greenford

HS2 lifts TBM Caroline  from below ground at the Green Park Way site in Greenford

On Sunday 25th May, engineers working on the HS2 project lifted the TBM's 9.48 metre diameter cutterhead, front and middle shield, weighing 850 tonnes, using a large gantry crane. The tunnelling ... More Information

HS2 celebrates first Birmingham tunnel breakthrough

HS2’s giant TBM Mary Ann broke through on 9th, May 2025, marking the end of her mission to excavate the first bore of what will soon become the longest railway tunnel in the West ... More Information

HS2 - Second TBM completes the western section of Northolt tunnel

On 3rd April 2025 HS2 has completed a 5-mile tunnel drive under London – using one of four TBMs being deployed to build the railway’s Northolt tunnel. The TBM named Caroline, is the ... More Information

HS2 TBM Sushila removed following Northolt tunnel excavation

HS2 TBM Sushila removed following Northolt tunnel excavation

Following its 8 km (5-mile) drive underneath the capital, HS2 lifted TBM Sushila out of the ground at the Green Park Way site in Greenford, West London.    The cutterhead, ... More Information

HS2 - Construction milestone at Long Itchington Wood Tunnel

HS2 has announced a significant milestone at Long Itchington Wood tunnel in Warwickshire – the first deep tunnel on the high-speed route to complete its civil engineering ... More Information

HS2 Construction Update - 2025

Click here for the 2025 project update which highlights the progress across 350 worksites between London and the West Midlands and it provides a snapshot of the huge progress HS2 is making ... More Information

HS2 - TBM Sushila completes its 8.04 km excavation of Northolt tunnel

HS2 - TBM Sushila completes its 8.04 km excavation of Northolt tunnel

On 19th December 2024,  TBM Sushila - which is 160-m in length, with a cutterhead of 9.84 m in diameters and a weight of 2,050 t, reached Green Park Way vent shaft in Ealing, breaking through ... More Information

HS2 reaches halfway point on key ‘green tunnel’

Press Release - Construction of the 700-metre-long HS2 Burton Green ‘green tunnel’ is now 50% complete, with 150 people supporting the build process The last year has seen completion of ... More Information

Renewed funding for HS2 project

Press release - In the latest 2024 UK budget, Chancellor Rachel Reeves has allocated renewed funding for the HS2 project, specifically prioritizing the development of its tunnel network. This ... More Information

HS2’s tunnelling into Birmingham reaches halfway point

The construction of HS2’s gateway to Birmingham takes a leap forward as the huge 125-m-long TBM digging the first bore of the Bromford tunnel reaches the halfway point.  The 1,600 t ... More Information

PRESS RELEASE - We’re half way there! HS2’s Northolt Tunnel under the capital is 50% complete

PRESS RELEASE - We’re half way there! HS2’s Northolt Tunnel under the capital is 50% complete

Quartet of tunnelling machines boring the Northolt Tunnel between West Ruislip and Old Oak Common station have built half of the tunnel New video and images shows the unstoppable momentum of the ... More Information

HS2 Updates

HS2 Updates

Chiltern tunnel TBMs dismantled - The Dismantling of the two Herrenknecht TBMs - 170m long and weighed 2,000 t - that built HS2 (High Speed Two) Ltd’s Chiltern Tunnel have now been ... 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

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

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

Historic breakthrough for HS2’s longest tunnel

Historic breakthrough for HS2’s longest tunnel

HS2’s first giant TBM – which launched almost 3 years ago – broke through on 27 February at the end of her 16 km (10-mile) journey under the Chilterns, excavating the longest ... More Information

HS2 launches third TBM under capital building the Northolt Tunnel

On 25th February HS2’s London tunnels programme passed a major milestone as the third TBM being used as part of the project was launched.  TBM Emily, named after Emily Sophia Taylor who ... More Information

Small businesses win big with £millions more HS2 orders

Press release - Britain’s biggest construction project, HS2, is helping the UK’s small business community to thrive. New figures show HS2’s civils contractors doubled their total ... More Information

Press release - Completion of HS2 logistics tunnel paves the way for high-speed line to Euston

Press release - Completion of HS2 logistics tunnel paves the way for high-speed line to Euston

HS2 today (Tuesday 23rd January) celebrated the breakthrough of a tunnelling machine into its underground Old Oak Common station – marking a key milestone in plans to eventually carry the ... More Information

HS2 on track for pivotal 12 months as high-speed railway takes shape

Press release - HS2 is preparing to enter a critical new phase with the development of state-of-the-art rail systems that will allow passengers to enjoy some of the world’s most reliable ... More Information

Press release - Second giant HS2 tunnel boring machine gets ready to start digging under Birmingham

Press release - Second giant HS2 tunnel boring machine gets ready to start digging under Birmingham

A team of 90 specialist engineers have completed the assembly of HS2’s giant tunnel boring machine (TBM) which will start digging the second bore of the 3.5 mile Bromford Tunnel into ... More Information

HS2: Half of Chiltern tunnel cross-passage mining complete

The construction of the HS2’s longest tunnel - stretching for 16.09 km (10 miles) under the Chilterns - passed a key milestone this week with mining completed for 19 out of 38 emergency ... More Information

TBM Anne lowered into launch chamber

On 17 November, 2023 the Skanska Costain Strabag Joint Venture completed the final lift of major TBM Anne components into the huge launch chamber in West London, under the lights of ... More Information

Lift off! HS2’s latest London tunnelling machine assembled 25 metres below ground

Press release - We've unveiled the names of the next pair of tunnel boring machines (TBMs) that will construct the high speed rail line under the capital. Following a public vote, the names Emily ... More Information

HS2 – Latest Green Tunnel

HS2 – Latest Green Tunnel

HS2 has begun assembling the project’s longest ‘green tunnel’ - designed to blend the high speed railway into the rural landscape and reduce disruption for communities around ... More Information

HS2 opens TBM naming competition

HS2 (High Speed Two) Ltd is asking the public to choose names for the next two TBMs that will be launched in early 2024 to dig the Northolt Tunnel East travelling through Brent and Ealing. The TBMs ... More Information

HS2’s Tunnel progress - TBMs Florence and Cecilia reached Little Missenden

HS2’s Tunnel progress - TBMs Florence and Cecilia reached Little Missenden

Last week on August 8th, 2023 the giant TBMs reached the Little Missenden ventilation shaft, passing the fourth of five ventilation and emergency access shafts, 75% of the way through the 16 km (10 ... More Information

HS2 tunnelling in the capital passes the first Milestone

HS2’s first two TBMs in London, Sushila and Caroline, have completed the 1.6 km (first mile ) of the twin-bored Northolt tunnel  in the capital.  Since launch in November 2022, the ... More Information

Experienced TBM Fitters wanted - North West London

Experienced TBM Fitters wanted - North West London

Tunnelcraft are recruiting experienced TBM Fitters for one of their prestigious long running HS2 projects in Northwest London. Competitive rates paid plus accommodation. Candidates are to possess ... More Information

HS2 unveils huge tunnel boring machine ready to dig HS2’s Bromford Tunnel in the West Midlands

HS2 unveils huge tunnel boring machine ready to dig HS2’s Bromford Tunnel in the West Midlands

The first images have been revealed of the huge tunnel boring machine (TBM) that will dig HS2’s Bromford Tunnel, between Water Orton in North Warwickshire and Washwood Heath in ... More Information

HS2’s multi-billion-pound boost for UK businesses

HS2’s construction is helping to keep over 2,000 UK businesses afloat as they continue to tackle difficult economic conditions. Latest figures from HS2 show that tier two subcontracts ... More Information

HS2 launches third tunnelling machine in London

HS2 launches third tunnelling machine in London

HS2 has once again begun tunnelling under the capital, launching its third giant Tunnel Boring Machine (TBM) in London. The tunnel won’t be used by HS2 trains, but instead will be used to ... More Information

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Tunnelling News

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

KIB gets go-ahead for landmark Kuwait tunnel revamp project

On the key tunnel beautification project, Vice Chairman and CEO Raed Jawad Bukhamseen said: "This initiative reflects KIB's vision of supporting ... More Information

From hills to hope

As night falls over the northern highlands of Lesotho in early July, winter's chill sets in. Yet, the Polihali Transfer Tunnel construction site ... More Information

Tunnel boring machines reach Parramatta in major Metro West milestone

Tunnel boring machines have reached Parramatta, marking a major milestone in the construction of the Metro West project. More Information

Completion of hyperbaric excavated tunnel marks major milestone for Naples-Bari rail project

The construction of the Casalnuovo Tunnel, a critical and technically challenging segment of the high-speed railway line between Naples and Bari ... More Information

Multraship tugs support Antwerp Scheldt tunnel construction

Tugboats are supporting the construction of a motorway tunnel in the River Scheldt in Antwerp by towing and manoeuvring concrete structures and ... More Information

Europe's $45BN Mega Tunnels through the Alps

Discover the record-breaking network of tunnels being constructed beneath the Alps. This video explores the top 6 longest tunnels in the region, .. More Information

AFRY secures contract for Switzerland's Twann Tunnel project

Construction oversight of the Twann Tunnel in the country. The tunnel on the Lake of Bienne is intended to ease traffic congestion in Twann by ... More Information

Line 5 Tunnel Project: Public comments now open for proposal to build under Straits of Mackinac

"The purpose of the project is to facilitate the construction of a tunnel beneath Lake Michigan bottomlands to replace the Line 5 dual pipelines ... More Information

ECRL Breakthrough: Genting Tunnel Becomes SEA's Longest Rail Tunnel

Genting Tunnel's construction used both Tunnel Boring Machines (TBM) and traditional drill-and-blast methods. The TBMs, built in China and ... More Information

Sydney tunnel factory creates 700 manufacturing jobs

The factory will support two of the largest tunnel boring machines (TBMs) in the Southern Hemisphere, set to arrive later this year. Once ... More Information