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Work starts on Caldecott fourth tube

Work starts on Caldecott fourth tubeCaldecott tunnel is on Route 24 between Oakland and Orinda in California, US. It handles 160,000 vehicles/day through its three tubes, and is overloaded. Work is ... More Information

Madrid-Castilla La Mancha-Valencia-Murcia high speed line progress

Madrid-Castilla La Mancha-Valencia-Murcia high speed line progressExcavation has been completed at the 2,437 m-long El Regajal rail tunnel on the 4.7 km Aranjuez-Ontígola section of the ... More Information

Robbins EPB assembled at Mexico jobsite

Robbins EPB assembled at Mexico jobsiteMexico City officials have celebrated the erection of the country's largest ever TBM with a cutterhead turning ceremony. Next week, the 10.2 m-diameter Robbins ... More Information

Portugal court suspends Marao tunnel construction

Portugal court suspends Marao tunnel constructionConstruction of the twin-tube 5,655 m-long Marao motorway tunnel on the new Amarante-Vila Real highway in Portugal has been suspended following ... More Information

Padley & Venables worldwide

Padley & Venables worldwidePadley & Venables is one of the largest international manufacturers of a wide range of quality tools and bar steels for use in the mining, tunnelling, quarrying, ... More Information

GIA working well in Hong Kong small diameter drainage tunnels

GIA working well in Hong Kong small diameter drainage tunnelsContractor Dragages-Nishimatsu has taken delivery of a fleet of GIA locomotives, shuttlecars and Haggloaders to assist in small diameter ... More Information

Devil's Slide improvement

Devil's Slide improvementOwned and operated by Caltrans, the Devil's Slide project is located on State Route 1 in San Mateo County between the City of Pacifica and the town of Montara, California. ... More Information

Terratec sponsors tunnelbuilder.com

Terratec sponsors tunnelbuilder.comTerratec, our old friends from Tasmania, are starting 2010 with a bang, sponsors of tunnelbuilder.com! For 20 years Terratec has been manufacturing Total ... More Information

Singapore Downtown Line progressing

Singapore Downtown Line progressingContractor Soletanche Bachy is excavating trenches for the slurry walls that will contain the important Bugis interchange station on the new 40 km-long, 33 ... More Information

New guidelines for safety in Italian road tunnels design

New guidelines for safety in Italian road tunnels designANAS has published updated guidelines for safety in Italian road tunnels design, with more information about Italian Risk Analysis Method and ... More Information

Korea Mould for precasting equipment

Korea Mould for precasting equipmentKorea Mould supplies high quality segment lining products for the world's tunnelling industry and a range of similar products for railway, pipejacking, spun ... More Information

Normet increases investment in tunnelling market

Normet increases investment in tunnelling market2009 proved to be a good year for Normet, promoting the decision to invest another EUR1 million at their plant in Iisalmi, Finland. 2010 has started ... More Information

Petrobras prepares Gastau tunnel

Petrobras prepares Gastau tunnelPetrobras has already contracted for a 6 m-diameter tunnelling machine in Germany for the excavation of the underground portion of the 98 km-long Gastau gas pipeline ... More Information

Twenty years of Terratec

Twenty years of TerratecIn 1990, Tony Peach and Al Jones, after long experience working on projects around the world with The Robbins Company and its affiliates, decided to move to Australia. ... More Information

Jondal tunnel length decided

Jondal tunnel length decidedThe alignment and length of Norway's Jondal tunnel has finally been decided. The tunnel will be 9,970 m-long and will run through Kvinnherad and Jondal municipalities. ... More Information

IPS Group New Year greetings

IPS Group New Year greetingsThe IPS group would like to extend best wishes for a Happy and Prosperous New Year to all our clients and personnel.As we embark on our 22nd year in business as an ... More Information

Terratec celebrates 20th anniversary

Terratec celebrates 20th anniversaryTerratec, the renowned Australian designer and manufacturer of TBMs, raise borers, and specialized tunnelling and mining systems, is celebrating its 20th ... More Information

Breakthrough at Gondar Station on Rome Metro B1

Breakthrough at Gondar Station on Rome Metro B1On 03.12.2009 the 6.76m-diameter EPB TBM (odd track) entered the Gondar station of the B1 Metro line in Rome, having started its drive at Conca d'Oro ... More Information

Design approval for refurbishment of Fossino tunnel

Design approval for refurbishment of Fossino tunnelANAS has approved the design for A3 Salerno-Reggio Calabria motorway, km 148,800 - 153,400 section, between Fossino tunnel and Laino Borgo exit in ... More Information

Sandvik rigs score in Indian oil storage project

Sandvik rigs score in Indian oil storage projectFour Sandvik DT 820 underground jumbo drill rigs are being used for the construction of India's first underground crude oil storage cavern, located at ... More Information

Intertunnel 2010 gains pace

Intertunnel 2010 gains paceAs the only Italian exhibition dedicated exclusively to the tunnelling industry, Intertunnel is drawing some of the great names to Torino for 8-10th June, 2010. Palazzoli ... More Information

Breakthrough of Barritteri tunnel on the A3 Salerno-Reggio Calabria

Breakthrough of Barritteri tunnel on the A3 Salerno-Reggio CalabriaOn 04.12.2009, the Consortium Salerno-Reggio Calabria, composed of Impregilo and Condotte, broke through the EUR105 million, 2.5 ... More Information

Hedinsfjardargong opening delayed

Hedinsfjardargong opening delayedAt the beginning of April, 2009, the last 40 m of the Hedinsfjardargong tunnel between Ólafsfjördur and Siglufjördur in north Iceland was blasted open. The tunnel ... More Information

New Zealand Rosedale sewer outfall holed

New Zealand Rosedale sewer outfall holedThe 3.3 m-diameter EPB employed by McConnell Dowell on the 2.95 km-long Auckland Rosedale outfall has holed through into the prepared subaqueous shaft, some ... More Information

Robit Rocktools to sponsor tunnelbuilder.com

Robit Rocktools to sponsor tunnelbuilder.comFinland-based Robit Rocktools has gone from strength to strength since the company first became a tunnelbuilder advertiser. Now a major player in the ... More Information

IPS Group Tunnelling Department introduces Keith Gill

IPS Group Tunnelling Department introduces Keith GillIPS Group is pleased to announce that Keith Gill has joined the company and is now representing the IPS Tunnelling Department in the United ... More Information

Sandvik rigs for Vietnam hydro

Sandvik rigs for Vietnam hydroThe Dakmi 4 hydro plant project in Vietnam experienced unforeseen severe rock conditions near the portal of the 3.37 km-long tailrace tunnel, requiring the driving of a ... More Information

BASF launches improved ecological tail sealant

BASF launches improved ecological tail sealantZurich-based BASF Construction Chemicals has launched a specially developed tail sealant with low ecological impact designed for open mode EPB and hard ... More Information

Herrenknecht breakthrough at Buettenberg

Herrenknecht breakthrough at BuettenbergOn 20.11.2009 the 2,500 t Herrenknecht TBM broke through on the first tube of the 1,230 m A5 Buettenberg tunnel on Biel bypass. It will now be moved to ... More Information

Breakthrough for Thessaloniki metro

Breakthrough for Thessaloniki metroIn 2007, Attiko Metro of Athens awarded the EUR958 million contract for design, construction and commissioning of the 9.5 km Thessaloniki metro to an Italian-Greek ... More Information

RITCO joins tunnelbuilder.com

RITCO joins tunnelbuilder.com Royal Industrial Technology Corporation, or RITCO, is the largest tunnel management engineering company in Korea, with 90% market share for roads tunnels of 1-5 km in ... More Information

Tunnel safety and security conference

Tunnel safety and security conferenceThe fourth international symposium on tunnel safety and security, ISTSS, will take place in Frankfurt, Germany from 17-19th March, 2010. Online registration is ... More Information

Thermal Ceramics Firemaster Fire protection for Faver tunnel

Thermal Ceramics Firemaster Fire protection for Faver tunnelCossi Costruzioni SpA will complete construction of the 1.2 km single-tube Faver tunnel on the SS 612 bypass in Val di Cembra in March, ... More Information

Robbins TBMs for Malaysia

Robbins TBMs for MalaysiaSince the 1980s, Malaysia's capital Kuala Lumpur and surrounding areas have experienced rapid economic growth. The area sources most of its water from a network of local ... More Information

Breakthrough in Beles headrace tunnel in Ethiopia

Breakthrough in Beles headrace tunnel in EthiopiaOn 08.11.2009 the 8.1 m-diameter SELI Double Shield/EPB Dual Mode TBM broke through the 12 km long Beles headrace tunnel in Ethiopia. The tunnel is ... More Information

World Tunnel Congress China 2010

World Tunnel Congress China 2010To be held in Shanghai, China on 04-05.03.2010, the World Tunnel Congress China 2010 promises to be an interesting event. Co-organized by Beijing Jiaotong University ... More Information

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Tunnelling News

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

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