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HS2 tunnelling machines reach Chalfont St Peter ventilation shaft

Press release - HS2 this week confirmed that the two enormous 2,000 tonne tunnelling machines digging the high speed rail project’s tunnels under the Chilterns have completed the first stage, ... More Information

Consultation for the A303 Stonehenge DCO (Development Consent Order)

National Highways (the Applicant) has published the environmental information relating to the environmental statement submitted in support of its application to the Secretary of State for Transport ... More Information

First major UK infrastructure project to use procurement to reduce carbon

Press release - Invited shortlisted bidders to tender for the £1.9 billion contracts to build the roads, green bridges, parks and woodlands Today, (Monday 14 March 2022) we have invited ... More Information

Swiss Tunnel Congress 2022

The Swiss Tunnel Congress (STC) unfortunately did not take place as usual over the last two years, but now it’s back! The STC 2022 will be held from June 1-2, 2022 in the concert hall of the ... More Information

Secondary lining for shaft complete at Acton Storm Tanks

Press release - The team working on the most western site of the Tideway project has recently completed the secondary lining of its 35-metre-deep shaft, marking a key milestone at Acton Storm Tanks ... More Information

Construction of the E6 Kvithammar – Asen – works begin.

Construction has of the new E6 from Kvithammer (Stjørdal municipality) to Asen (Levanger municipality) for Nye Veier by general contractor Hæhre Entreprenør AS. The works started ... More Information

Breakthrough in the Vaere tunnel

After 398 explosions and 550,000 t of rock blasted out, Nye Veier and Acciona have broken through the new tube of the 1625 m Være tunnel on the E6 from Ranheim to Værnes. Work will now ... More Information

First ever TBM for the Metro Manila Subway Project

On the 08/03/2022 the Department of Transportation (DoTr) announced that the first TBM to be used in Philippine history would be lowered into the Metro Manila Subway Project (MMSP) works. The TBM is ... More Information

Australia’s largest tunnelling machine starts digging the West Gate Tunnel

Press release - The largest tunnel boring machine (TBM) in the Southern Hemisphere has started digging the West Gate Tunnel. The massive TBM, named Bella, was sent on its journey under ... More Information

TBM Dame Whina Cooper reassembly begins at Mt Eden

Last October TBM Dame Whina Cooper successfully completed the first City Rail Link tunnel and is now currently being reassembled at Mt Eden. All parts of the TBM, the cutterhead, front shield, ... More Information

WTC2023 – Abstracts’ submission is now open

All members of the tunnelling and Underground Space family are invited to submit their abstracts, deadline 31/05/2022, for WTC2023 to be held in Athens from 12th to the 18th May 2023: ... More Information

Cross River Rail - Northern Tunnel Portal construction update

Excavation, portal structure construction and TBM removal continues in March at the Northern Tunnel Portal site and is on track for completion in mid-2022. Once the team reaches the required ... More Information

TBM Margherita Launched for the Cefalù tunnel in Sicily

On 03/03/2022 the ceremony for the beginning of construction of the Cefalù tunnel was held. The tunnel will be the longest of the 3 tunnels for the doubling of the ... More Information

Grand Paris Express – TBM Dorine almost ready for second departure from the Verdun shaft

On 30 August 2021, after 6 months of excavation at a depth of 20 m under the municipality of Bourget and the simultaneous installing of the tunnel lining, the TBM Dorine arrived at the Rolland shaft ... More Information

TERRATEC EPBM Ready for South Bangkok Cable Tunnel Project

TERRATEC delivers the new 4.27m dia. EPB TBM that will be used by Contractor Nawarat Patanakarn PCL to supply the electricity in Bangkok, Thailand. TERRATEC is pleased to announce the delivery of a ... More Information

Four consortia are competing to build the Nordhavn tunnel

The Danish Road Directorate has now - after a pre-qualification - selected the four contractors who will have the opportunity to bid on the task of building the Nordhavn tunnel in Copenhagen, which ... More Information

Robbins Complimentary Webinar

LARGE DIAMETER XRE TBM: SUCCESS IN TURKEY & FUTURE APPLICATIONS. Can large diameter TBMs bore mixed ground efficiently? Join us as we discuss the incredible results achieved at Turkey’s ... More Information

PIARC Webinar - Road tunnels safety

On February 24th the ROAD TUNNELS SAFETY webinar will be held organised by PIARC Italy with the Italian Technical Committee "Tunnels", in collaboration with ANAS, the National Council of Engineers ... More Information

Updates from Moscow Metro Line construction

Troitskaya metro line - The construction of the right running tunnel between the Mamyri and Bachurinskaya stations on the Troitskaya metro line has been completed. The TBM has finally ... More Information

Construction of metro Line 7 in Santiago begins

On 17/02/2022 the Chilean President of the Republic, Sebastián Piñera, together with the President of the Metro, Louis de Grange, kicked off the works with the start of the ... More Information

Romania - The Cluj-Napoca subway

On 27/01/2022 the Romanian Minister of Transport, Sorin Grindeanu, signed a collaboration protocol for the construction of the subway in Cluj county, Cluj-Napoca and Floresti municipalities. ... More Information

WTC 2023 Athens

The World Tunnel Congress 2023 will be held at the Megaron Athens International Conference Centre (MAICC) in Athens (Greece) from the 12th - 18th of May 2023. The theme of WTC 2023 ... More Information

North Bristol relief sewer – a tunnelling breakthrough

The Wessex Water project to build a 5.5km tunnel for a new “super sewer” in Bristol has reached a major breakthrough. After traveling for 19 months under the streets of Bristol, ... More Information

Corbulo tunnel updates

Now that the concrete work for the cross connections are ready, the teams are able to concentrate on the tunnel finishing, which includes barriers, emergency exit doors, cables and the installation ... More Information

Excavation begins on the Casacastalda tunnel in Italy

The Joint Venture Besix (Brussels) and Donati (Rome) is doubling 3.1km of the SS 318 on behalf of the Italian Highway Authority ANAS. At the beginning of February, one year after the start ... More Information

Australian Tunnelling Conference 2022

The 17th Australian Tunnelling Conference will be held from the 11 – 12 May 2022 at the Aerial UTS Function Centre in Sydney. As tunnels continue to provide the critical link to safer, ... More Information

Government moves ahead on replacement for Massey Tunnel

Nine contracts have been awarded for technical and engineering expertise to support the Province’s delivery of the Highway 99 Tunnel Program to replace the Massey Tunnel, which will improve ... More Information

Metrolinx to Release Ontario Line’s Draft Environmental Impact Assessment Report

The Ontario Line draft Environmental Impact Assessment Report (EIAR) will be made available for public review and comment from 07/02/2022 to 09/03/2022. The draft report describes existing ... More Information

The Yonge North Subway Extension

The Yonge North Subway Extension (YNSE) is a long-awaited project that will bring faster transit to more people across York Region and Toronto. It will extend TTC's Line 1 (Yonge University) roughly ... More Information

Tunnelbuilder welcomes BAJAJ FIBRE TUFF

The Bajaj Group - Nagpur is based in Nagpur, Maharashtra, India, and was incorporated in 1961. Bajaj Reinforcements LLP (ISO 9001:2008) are manufacturers of next generation "Macro Synthetic ... More Information

Major pylon removal project gets underway in Snowdonia

2022 will mark a significant milestone with the start on-site of a project to transform a nationally significant Snowdonia landscape that will ultimately remove the overhead electricity line and ... More Information

STRATA WORLDWIDE BECOMES RE-SYSTEMS’ EXCLUSIVE DISTRIBUTOR FOR GEL-TECH POLYMER RUBBER GEL TECHNOLOGY

Press release - RE-Systems Group Americas and Strata Worldwide have signed a new distribution agreement naming Strata Worldwide the exclusive distributor of RE-Systems’ innovative Gel-Tech ... More Information

Sepulveda Transit Corridor scoping deadline approaching – share your comments by Feb. 11, 2022

THE LA Metro is beginning the environmental review phase for the Sepulveda Transit Corridor project, which will build a heavy rail line or monorail between the San Fernando Valley and the Westside ... More Information

Purple Line tunnelling completed between Century City and Wilshire/Rodeo

In January two TBMs Ruth and Harriet completed the 1.77 km (1.1 miles) tunnels between Century City and Wilshire/Rodeo station under downtown Beverly Hills for Section 2 of the Purple (D Line) ... More Information

A submerged tunnel to be built connecting the cities of Santos and Guarujá

PPI (Investment Partnership Program) Council recommends qualification of studies for a immersed tunnel between the municipalities of Santos and Guarujá, in the state of Sao Paulo, some 80 km ... More Information

First breakthrough for the Phase 4 of Delhi MRTS

A major milestone in DMRC’s Phase 4 construction work was achieved at the end of December 2021 as the first ever tunnelling stretch of Phase-IV of Delhi MRTS was completed at Krishna Park ... More Information

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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

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