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Purple Line to San Siro

Purple Line to San Siro

On 29.04.2015 Metro 5 SpA will inaugurate the extension Garibaldi station to San Siro Stadium with five new stations of driverless automatic Line 5 in Milan. The Purple Line from Bignami Northern ... More Information

Seven Service in UAE tunnel

Seven Service in UAE tunnel

Seven Service has delivered its first rotary washer to Abu Dhabi (UAE): 576 m - 72 m underground and 504 m above ground - in the Al Salam tunnel. Seven Service, after the acquisition of contracts in ... More Information

Sandvik quarry seminar

Sandvik quarry seminar

Sandvik Construction Russia, together with official distributor Quarry-Service, recently held a highly successful Quarry Seminar located in Yekaterinburg. It was focused on the drilling and blasting ... More Information

Karavanke dualling

Karavanke dualling

On 14.04.2015, at Bruck an der Mur, Austria, the Slovenian and Austrian state motorway companies signed an agreement on the construction of a second tube of the 8 km-long Karavanke tunnel linking ... More Information

HST Tokyo to Nagoya

HST Tokyo to Nagoya

At the beginning of April a Japanese magnetic levitation train broke its own world speed record, hitting 603 km/h. The test marks the end of high-speed test runs to decide the best operational speed ... More Information

Rome B1 metro complete

Rome B1 metro complete

On 21.04.2015 Salini Impregilo SpA completed and handed over to the city of Rome the last section of line B1 of the Rome Metro stretching from the Conca d'Oro station to the Jonio station. The Jonio ... More Information

WTC technical visits

WTC is offering four interesting technical visits that will take place after the closure of the congress: Underground structures of HPP Zakucac and HPP Peruca - on 28.05.2015 Underground ... More Information

Evergreen line TBM maintenance

Evergreen line TBM maintenance

In British Columbia, Canada the Evergreen Line is being driven by TBM Alice, named for Alice Wilson, born in 1881 in Cobourg (Ontario) and the first woman to hold a professional position at the ... More Information

Sunset Tunnel renovation

Last month the San Francisco Municipal Transportation Agency (SFMTA) began replacing the ageing track and other infrastructure inside the 1,290 m Sunset Tunnel to improve safety and reliability of ... More Information

Call for Abstracts

All authors are invited and encouraged to submit their maximum 300 words abstracts for consideration and inclusion in the Scientific Programme for Underground Construction Prague 2016. All abstracts ... More Information

Toronto-York Spadina plan

In Canada, the TTC Board approved a plan to complete the Toronto-York Spadina Subway Extension (TYSSE) project by the end of 2017. Tunnelling with the four TBMs was completed 18 months ... More Information

Eglinton Crosstown TBMs move

Eglinton Crosstown TBMs move

Over the weekend of April 17-20, 2015 the TBMs Dennis and Lea involved in the construction of the Eglinton Crosstown light rail transit line in Toronto, Canada will be lifted out of the extraction ... More Information

Improving rail links to Heathrow

A new direct rail link connecting the west to Heathrow will improve passenger journeys to the UK’s busiest airport and help to increase economic productivity across the Thames Valley. Network ... More Information

Sandvik DT1131i jumbo in Korea

Sandvik DT1131i jumbo in Korea

A new high speed railway is being constructed in Korea to link Wonju and Gangneung as part of an extensive infrastructure programme for the 2018 Pyeongchang Winter Olympics. Gusan Construction has ... More Information

New Sandvik Construction website

New Sandvik Construction website

Sandvik Construction has launched a brand new website to provide customers with information tailored to their specific requirements. To view, visit www.construction.sandvik.com. 15/15. More Information

Parallel Thimble Shoal tunnel

The Parallel Thimble Shoal Tunnel Project in Virginia, US currently includes the following elements of design and construction: approximately 1,740 m of two-lane tunnel connecting previously ... More Information

Robbins system in Indianapolis

Robbins system in Indianapolis

On 05.03.2015 a Robbins 6.2 m-diameter Main Beam TBM completed boring a 2.8 km-long extension tunnel, known as the Eagle Creek Tunnel, for the Indianapolis Deep Tunnel System in Indiana, USA. The ... More Information

Turkey Expositions

Tunnel Expo Turkey takes place in Istanbul 27-29th August, 2015. The Expo parallels a concurrent Mining Expo, and also hosts a tunnelling short course. Read the prospectus and visit ... More Information

Delaware-Rondout Aqueduct Bypass Tunnel

The Department of Environmental Protection (DEP) will build a 4.02 km-long bypass tunnel around a leaking portion of the Delaware-Rondout aqueduct in New York. Other leaks in the Town of Wawarsing, ... More Information

Robbins webinar 1-2015

Robbins webinar 1-2015

The first Robbins webinar of the year is scheduled for 15th April, 2015. Webinar Details: Title:  A Myth Dispelled: In Difficult Ground, the Time for Drill & Blast Excavation has ... More Information

Terratec in Laos

Terratec in Laos

A Terratec 5.74 m-diameter double shield hardrock TBM has started boring and lining 11.3 km of a hydro tunnel in Laos. Read the press release and visit www.terratec.co. If you have not yet read ... More Information

Robbins top stories

Robbins top stories

Robbins year-end edition of its Underground Innovations newsletter reviews 2014/2015 projects in the article Up for the Challenge. Read the newsletter and visit www.TheRobbinsCompany.com. 14/15. More Information

Northgate link extension

Northgate link extension

On 17.03.2015 TBM Brenda broke through the north wall at the future Roosevelt Station of the Northgate Link Extension in Seattle, US. The EUR2 billion Northgate Link Extension will connect ... More Information

Southbound Ceneri holing

Southbound Ceneri holing

On 30.03.2015, the final breakthrough in the south-bound east tube of the Ceneri Base Tunnel linked Sigirino with the south adit at Vezia, some five years from the first blast by Consortium ... More Information

Ceneri breakthroughs

Ceneri breakthroughs

On 17.03.2015, thirteen months ahead of schedule, the first breakthrough to the south took place in the southbound west tube of the Ceneri Base Tunnel. The deviation was extremely small, only 2 cm ... More Information

London Power Tunnels completion

London Power Tunnels completion

On 11.03.2015 TBM Evelyn broke into the shaft at Kensal Green bringing to an end the tunnel construction phase of the London Power Tunnels project, the  longest single tunnelling contract in ... More Information

BBT tunnels approved

On 24.03.2015 the Province of Bolzano approved the project for the construction of the main tunnels of the Brenner Basis Tunnel (Lot Mules) and confirmed the requirements for environmental ... More Information

Joint statement on cross alpine corridors

Joint statement on cross alpine corridors

On 20.03.2015, at Innsbruck, the joint statement on cross alpine corridors was signed. The Austria, Germany, France, Slovenia, Switzerland and Liechtenstein ministers of transport signed an European ... More Information

Cifa at Intermat 2015

Cifa at Intermat 2015

CIFA is further widening the Carbotech range truck-mounted pumps that, thanks to new high-performance materials, feature longer booms while still respecting weight limits. Two more models will be ... More Information

TBM Victoria arrival

TBM Victoria arrival

London Crossrail TBM Victoria, named after Queen Victoria who oversaw the birth of modern railways, has successfully broken in to the eastern end of Liverpool Street Crossrail station. The ... More Information

Follo Line award

Follo Line award

Acciona (Spain) in partnership with Ghella (Italy) have been named preferred bidders by the Norwegian National Rail Administration to design and build the 19 km-long twin tunnels of the Follo Line ... More Information

Project Managers for Norway

Project Managers for Norway

International tunnelling recruitment specialist iPS is seeking managers, planners and QS for a tunnel project in Norway, starting immediately and with two-year duration. ... More Information

19 TBMs drive Delhi Metro

Some 19 TBMs are currently engaged in constructing tunnels of Phase 3 of Delhi Metro, where 74 separate tunnelling drives are planned. Around 41 km of tunnelling and 33 tunnelling drives have been ... More Information

Terratec’s 25th anniversary

Terratec’s 25th anniversary

Terratec was incorporated in Australia in 1990 to satisfy the local market for TBMs and RBMs. Since then, the company has expanded its sales coverage into China, South East Asia, India, Europe and ... More Information

Lafontaine protection

Lafontaine protection

The1.8 km-long Louis-Hippolyte-La Fontaine Tunnel in Montreal is the only underwater tunnel in Quebec. Opened in 1967, the tunnel connects the south shore of the Saint Lawrence River to the Island ... More Information

Ahrental work starts

The Brenner Base Tunnel, the 64 km-long heart of the new Brenner rail line between Munich and Verona, is progressing apace, with work starting on the Ahrental main tunnel in Austria. Many important ... More Information

Tunnelling News

New game-changing tunnel boring, reef cutting 'meeting and beating' all expectations

UG2 reef at Bokoni is the target of the twin mobile tunnel boring and narrow reef cutter. Tunnelling will be done with the mobile tunnel borer for ... More Information

Mota-Engil CEO confirms winning bid for Santos-Guaruja tunnel

The company's subsidiary, Mota-Engil, has won the tender for the construction and operation of Brazil's first underwater tunnel, connecting the ... More Information

Metro Vancouver Utility Nearing Finish of $288M Annacis Water Tunnel

“Resilience is at the heart of this project,” said Nedim Alca, COWI's North America market director. “What makes this milestone so significant is not ... More Information

Fehmarnbelt: Danish tunnel portal nears completion

The work on the entrance to the Fehmarnbelt tunnel at Rødbyhavn on Lolland is almost complete. photo courtesy of The Fehmarnbelt Project. More Information

Final decision on airport tunnel 'now or never'

Alderman Jim Stevenson and City administrators are making a dramatic last push for the airport tunnel before construction on the new north/south ... More Information

Athens Metro Line 4 works to finish by 2029

The construction of Athens Metro Line 4 is progressing steadily, with the entire project ... Tunnel mistakenly excavated in Athens metro project. More Information

First trains on track to run through Metro Tunnel within three months

Melbourne's $15.5 billion Metro Tunnel could be switched on in as little as three months as construction wraps up at two CBD stations and trains ... More Information

Petersburg crews to begin tunnel project in response to ongoing flooding, damage - WRIC

As ongoing water issues have caused significant damage to infrastructure around Petersburg, the Old Towne neighborhood ... More Information

Intelligent optimization framework for tunnel construction

Tunnel construction forms the foundation of railway development and is essential for ensuring route continuity and operational efficiency. However, ... More Information

São Paulo positions TBM for next phase of Line 2-Green

A major milestone was reached on Monday (1 September) with the lowering of the cutter head of the tunnel boring machine (TBM) Cora Coralina... More Information

The 700-ton machine that'll dig NYC's Second Avenue subway extension

NYC has a new tunnel boring machine in its toolbox for the expansion of the line under 2nd ave. If you've never seen some BIG earth moving machines, ... More Information

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