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Final breakthrough on the 16.2-km Central Interceptor tunnel in Auckland

Final breakthrough on the 16.2-km Central Interceptor tunnel in Auckland

On 28 March 2025 the TBM Hiwa-i-te-Rangi broke through into a 30-metre- deep shaft at Point Erin Reserve, Herne Bay completing the 16.2-km Central Interceptor wastewater tunnel running under ... More Information

TBM Hiwa-i-te-Rangi breakthrough for Central Interceptor tunnel NZ

On 17th December, the Ghella Abergeldie Joint Venture (GAJV) celebrated the arrival of the massive Hiwa-i-te-Rangi TBM in the Tawariki Street shaft in Grey Lynn as part of the construction of ... More Information

New Zealand - TBM Hiwa-i-te-Rangi passes three quarter mark for Central Interceptor tunnel

New Zealand - TBM Hiwa-i-te-Rangi passes three quarter mark for Central Interceptor tunnel

On 11th  September  the TBM Hiwa-i-te-Rangi broke through into the 30-m deep shaft at the Western Springs site. The TBM Had tunnelled a little over 13km and installing over 8100 segment ... More Information

MTBM Victoria completes its digging for Central Interceptor Project at Auckland

MTBM Victoria completes its digging for Central Interceptor Project at Auckland

Victoria, the smallest of the three TBMs working on Watercare’s Central Interceptor project, has completed her micro-tunnelling work beneath Auckland and joined Domenica at the finish ... More Information

Green light for funding for Point Erin Central Interceptor tunnel project extension

Green light for funding for Point Erin Central Interceptor tunnel project extension

Funding has been confirmed to extend the Central Interceptor wastewater tunnel by more than 1 km from Grey Lynn to Point Erin, Herne Bay. This will  reduce wet weather overflows and ... More Information

Updates on Watercare Services Limited’s Central Interceptor Project

Updates on Watercare Services Limited’s Central Interceptor Project

In a significant milestone, the TBM Hiwa-i-te-Rangi, nearly 200 meters in length, has successfully breached into a shaft at a depth of 47 meters below ground. This achievement took place at the ... 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

The Central Interceptor tunnel project in Auckland reaches halfway mark

On 4 September the Hiwa-i-te Rangi TBM - more than 5m diameter -has broken through into a 69m deep shaft in May Road, Mount Roskill marking the halfway point of her 14.7km journey to central ... More Information

Hiwa-i-te-Rangi has completed Manukau harbour crossing in Auckand

Hiwa-i-te-Rangi has completed Manukau harbour crossing in Auckand

The 5.4m diameter TBM Hiwa-i-te-Rangi arrived at the 25m deep Pump Station 23 shaft in Hillsborough (Auckland) on 6th December. The TBM had left the southern shore of the Manukau in September ... More Information

Central Interceptor TBM begins historic tunnelling under Manukau Harbour

Central Interceptor TBM begins historic tunnelling under Manukau Harbour

Last week the TBM EPB Hiwa-i-te-Rangi, involved in the construction of the 14.7-km-long and 4.5m diameter wastewater tunnel from Grey Lynn to Māngere Wastewater Treatment Plant at Auckland, started ... More Information

Micro Tunnel Boring Machine lowers into shaft to begin first tunnelling for Watercare’s groundbreaking Central Interceptor project

Micro Tunnel Boring Machine lowers into shaft to begin first tunnelling for Watercare’s groundbreaking Central Interceptor project

A micro Tunnelling Boring Machine (MTBM) called ‘Domenica’ has been successfully lifted into a shaft at the May Rd, Mount Roskill site for Watercare’s Central Interceptor ... More Information

Milestone for Watercare’s Central Interceptor project

Milestone for Watercare’s Central Interceptor project

After ten months, the Central Interceptor TBM has passed its official Factory Acceptance Test (FAT). The TBM, which has been named ‘Hiwa-i-te-Rangi’ after a Mataariki star, has been ... More Information

Central Interceptor Project New Zealand

Central Interceptor Project New Zealand

The TBM that will be used for the excavation of the Central Interceptor Project has officially been ordered. The Central Interceptor is New Zealand’s largest ever wastewater tunnel, that will ... More Information

Preferred Bidder Selected For Central Interceptor Tunnel

Preferred Bidder Selected For Central Interceptor Tunnel

Auckland’s Watercare have selected Ghella-Abergeldie Harker Joint Venture as the preferred bidder for the construction of the Central Interceptor wastewater tunnel. The Central Interceptor ... More Information

Update on Australia and New Zealand

Update on Australia and New ZealandThe Brisbane Airport Link feasibility study has been completed, and a jv of Thiess, John Holland, Macquarie has been selected as preferred contractor. And the ... More Information

Tunnelling News

TUNNEL VISION Mega £7.4bn undersea tunnel connecting two CONTINENTS just got one step closer

A MAJOR £7.4 billion underwater tunnel connecting two continents has taken a step closer to construction. Experts have said the 24-mile tunnel is “technically viable”, paving the way for ... More Information

TBM breakthrough in Sydney

Tunnel boring machine (TBM) Jane Starkey successfully completed her 1.2km underground journey through challenging Sydney sandstone... More Information

Hochul announces $25 million for Harlem crosstown subway tunnel design

At E. 120th St., a pair of tunnel-boring machines — currently under construction in Germany — will bore new, 8,400-foot tunnels north from the end ... More Information

Tunnelling under the Yarra River

Our two Tunnel Boring Machines (TBMs) will soon be travelling underneath the Yarra River... Approximately 300 metres of the 6.5 kilometre North East Link will be under the Yarra ... More Information

The Boring Company says its tunneling machine is 'ready to mine in Nashville'

The Music City Loop project is aimed at transporting people from Nashville International Airport to Lower Broadway in roughly 10 minutes. By Li ... More Information

Norway Is Building the World's Longest and Deepest Tunnel Beneath the Sea

The Rogfast project, short for Rogaland Fixed Link, is an underwater road tunnel being built beneath Norway's fjords as part of the E39 coastal ... More Information

Future engineers become 'TBM Captains' for Suburban Rail Loop

Tunnel Boring Machines (TBMs) that will begin work this year. The tour of the eastern tunnel entrance was part of a long-term initiative, with ... More Information

Image gallery: Civil works completed on HS2's longest tunnel

Main construction on the Buckinghamshire structure began in May 2021 with the launch of two 2,000-tonne tunnel boring machines (TBMs), named Florence ... More Information

The Boring Company Launches Free Tunnel Contest: AI Applications for Smart Infrastructure

According to Sawyer Merritt on Twitter, The Boring Company has announced a contest to build a one-mile tunnel for free, inviting proposals for ... More Information

Out of sight: spectacular HS2 tunnels offer glimmer of hope for stalling project

Despite much soul-searching over UK’s inability to build infrastructure, two sections of HS2 under Chilterns are being hailed for their engineering... More Information

HS2 January 2026 update

We’re making progress building the main infrastructure for the new line. We’ve completed 80% of tunnelling and are working on major bridges, viaducts and embankments, and HS2’s new ... More Information

Implenia Secures EUR 350 Mln Projects For Bridges, Tunnel Works In Germany

Tunnel to join motorway sections and connecting roads. The Swiss construction and real estate company said the Peene Bridge project in Wolgast, ... More Information

Incredible new $7.9bn mega rail and road tunnel to be the world's longest

The safety of our workers is of utmost importance during the construction of the Fehmarn Belt Tunnel. We will await the findings of the ... More Information

TBM launch from Rukanpura soon as metro work gains pace

The tunnel boring machine (TBM) for the underground network is likely to be launched from Rukanpura on Bailey Road, which falls under Corridor I ... More Information

World's largest-diameter boring machine used for Yangtze River railway tunnel

China's domestically developed, world's largest-diameter vertical shaft boring machine 'Qiming' was officially put into operation in Taicang City ... More Information

HCMC approves sea-crossing route with undersea tunnel between Can Gio and Vung Tau

Ho Chi Minh City has approved a strategic proposal by Vingroup to construct a direct sea-crossing road connecting the Can Gio coastal urban area with Vung Tau beach town, cutting travel ... More Information

Changi Airport’s new underground link to take passengers from future T5 to T2 in 4 minutes

SINGAPORE – Passengers at the future Changi Airport Terminal 5 can expect to reach Terminal 2 in four minutes via the airport’s new underground link... More Information

SRL inspires TBM Captains - Victoria's Big Build

Tunnel Boring Machine (TBM) Captains. When SRL East opens in 2035 ... Construction of SRL East is powering ahead, with more than 3000 people ... More Information

Beneath winter's fjords: 17 miles of rock, 1300 ft deep

Rogfast tunnel construction beneath Norway's winter fjords, 17 miles long and 1,300 feet deep,. Credits: Ground Engineering. For years, the E39 ... More Information

Massive Sinkhole Opens Near $26 Billion Tunnel Project in Melbourne

A massive sinkhole has suddenly opened up in Melbourne near a major highway tunnel construction site, sparking safety fears and halting ... More Information

The world's longest expressway tunnel: China's Tianshan Shengli Tunnel

At the same time, the project also implemented China's first 'three-tunnel parallel construction' plan, which increased the number of workfaces. At ... More Information

'Not really where you want to be': Ground preparation for Lower Thames Crossing tunnelling

The Lower Thames Crossing is a major new road and tunnel project in the UK, intended to alleviate congestion at the Dartford Crossing and enhance. More Information

Funding problems affect metro line extensions

In the Athens metropolitan area, construction of Line 4 is continuing, with the Avax-Ghella-Alstom consortium saying the two tunnel-boring machines ... More Information

Transport Minister inspects progress on Cairo Metro Line 4 phase one

Four tunnel boring machines (TBMs) are in operation—two in each direction. According to the project timeline, the first TBM has reached the Grand ... More Information

Here's what happened with Toronto's Scarborough Subway Extension in 2025

SSE tunnelling, which began in January 2023, is being carried out with the largest tunnel boring machine (TBM) ever used on a Canadian transit project ... More Information

NHAI connects Tunnel No. 4 on Shimla bypass

NHAI PIU Shimla Project Director Anand Kumar, Bharat Construction ... The tunnel was constructed using the New Austrian Tunnelling Method (NATM) ... More Information

Mumbai-Ahmedabad Bullet Train Update: Palghar Tunnel Breakthrough Achieved

NHSRCL Bullet Train Project | India First Bullet Train Update: Last year, the Ministry of Railways achieved a breakthrough in the construction of ... More Information

Main tunnel works connecting future Changi Airport T5 to existing T2 completed

Main tunnel works connecting the future Terminal 5 to the existing Terminal 2 are completed, as the Changi East development gathers pace... More Information

Testing completed on Hudson River Tunnel boring machines

The project calls for construction of 9 miles of passenger-rail track between New York ... More Information

World's longest motorway tunnel finally opens in £3BILLION project

The Tianshan Shengli (Victory) Tunnel, located in the Tianshan Mountains of Xinjiang, China, measures some 22 kilometres – roughly 13.75 miles – and ... More Information

Cross-river tunnel of Nanjing Metro Line 4 Phase II completes tunneling

This photo taken on Dec. 27, 2025 shows the rear of the "Xinzhengcheng" tunnel boring machine at the construction site of Nanjing Metro Line 4 ... More Information

Tunnels Design and Construction Market is Going to Boom

HTF Market Intelligence projects that the global Tunnels Design and Construction market will expand at a compound annual growth rate (CAGR) of 6.80% from 2025 to 2032, from 72 Billion in ... More Information

Longest tunnel in the world costing £7billion will connect 3 European cities

The Brenner Base Tunnel is currently under construction and will connect the countries of Austria and Italy. The impressive tunnel, which is set ... More Information

Georgian Officials Mark Completion of Railway Modernization, Hoping to Boost Transit

The works also included the construction of the 8,300-meter dual-tube tunnel near Kvishkheti, 10 bridges, six tunnels, and around 100 engineering ... More Information

Israeli municipality approves budget for new tunnel project south of Jerusalem

The Jerusalem Governorate said that the project aims to connect the Har Homa settlement, built on Jabal Abu Ghneim land, to the Begin bypass road near ... More Information

Megaprojects Under Construction Around World In 2026

Described as the largest road tunnel in the U.K., the Lower Thames Crossing will link Tilbury in Essex via a tunnel underneath the Thames with ... More Information

Delhi Metro expansion: Cabinet approved Rs 12,015 crore project

The project, planned over a construction timeline of three years, will be executed largely underground using tunnel boring machines to minimise ... More Information

World's Longest Expressway Tunnel to Open, Linking North and South Xinjiang

Engineers used innovative methods and specially designed machines called tunnel boring machines (TBMs) to dig through hard rock faster and safer than ... More Information

The huge £21bn mega-tunnel that goes right through the middle of a mountain

Huge boring machines will create a 57.5km (35.7mile) tunnel through the Alps to connect French and Italian high-speed rail networks and link Lyon ... More Information