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Two contracts have been awarded for the delivery of works for Auckland’s City Rail Link.
Known as C5 and C7, the contracts have been awarded to delivery consortium Link Alliance and are within the existing project budget.
C5 primarily involves the connection between the new line from Britomart, via Aotea and Karangahape, to the existing line at Mt Eden. Where the CRL meets the North Auckland Line at Mt Eden, the twin track split into two branches, eastbound and westbound, said Francois Dudouit, project director for the Link Alliance.
“This requires changing the vertical alignment of the NAL tracks and partially the horizontal alignment, meaning replacement of tracks and overhead line equipment (OHLE) on more than 1km of the North Auckland line,” he said.
“It also requires retaining walls to transition from the existing NAL track level to the CRL line – a 3.5 per cent slope. More than 1,000 piles, diaphragm and sheet pile walls will be needed to build these retaining structures and the two cross-over structures to connect to the NAL upmain.”
Road and pedestrian bridges at a number of level crossings will also be built, including at Normanby Road, Fenton Street, and Porters Avenue, to improve cyclist and pedestrian safety.
The C7 contract covers the Systems Integration, Testing and Commissioning components of the CRL project. These include trackslab, track, overhead line, signalling, control systems, communications systems, control room fit-out and building work, and trackside auxiliaries. Work also includes integrating the new line and systems with the legacy systems on the Auckland rail network.
Dudouit said that work to connect the various components of the project is already occurring.
“Integration of the C5 and C7 teams into the Link Alliance is well underway across multiple workstreams including civils, programme and cost control. Early works such as utility relocations and establishing single-line running are already taking place as part of an integrated programme to deliver the City Rail Link to Aucklanders in 2024.”
As these elements of the project require involvement from various stakeholder from the current network, such as the transport authority, Auckland Transport, close working relationships have been established.
“KiwiRail and Auckland Transport, and their supply partners, are formally engaged for the City Rail Link project through stakeholder partnership agreements. On a day-to-day basis, staff from both Auckland Transport and KiwiRail work in the Link Alliance offices to maximise collaboration opportunities, as part of an established interface and relationship management programme,” said Dudoit.
Construction on the City Rail Link (CRL) in Auckland has resumed.
On-site activity was temporarily halted for five weeks during the coronavirus (COVID-19) lockdown in New Zealand, however all six CRL sites are now operating. These sites are located in the middle of the Auckland CBD at Britomart, Albert Street, Karangahape, and Mt Eden, as well as at Ōtāhuhu.
Although construction may have been halted, off-site work could continue, enabling what CRL Ltd chief executive Sean Sweeney called a “strong and safe” return to construction.
“The prep work completed at our sites during the past week together with planning and design work done from home by our backroom teams during the lockdown will all contribute to a successful return to work.”
Other rail projects across New Zealand have also resumed, with KiwiRail workers returning to sites including the Kaikōura rebuild and the Wellington metro upgrades. Transport Minister Phil Twyford acknowledged the efforts of the rail and construction sectors.
“I’d like to thank the industry, Waka Kotahi, City Rail Link Ltd and KiwiRail for their efforts which will see well over 1,000 construction workers back on the job this week. For example, the Kaikōura rebuild will see around 450 road and rail workers back to work, City Rail Link expects 400 workers back this week, and Transmission Gully and Pūhoi to Warkworth will ramp back up to hundreds of workers at each.”
Deputy Prime Minister Winston Peters said works would soften the economic impact of COVID-19.
“We’re putting our money where our mouth is and getting people back to work day one of Alert Level 3 so we can get money into the pockets of businesses and workers sooner.”
At CRL sites 200 workers are on site on the first day, Tuesday, April 28, and numbers will go up to 400 by the end of the week.
“Our priority is the safety of our construction teams and the wider community. At morning start-up and toolbox meetings workers will be briefed about stringent new health and safety protocols before they make a successful start to their shifts. Those rules cover things like access to sites, safety and protection for themselves and their workmates, and sanitation and cleaning regimes. We’ll be applying the protocols diligently,” said Sweeney.
Rail has been targeted as a way for the New Zealand economy to recover after the lockdown, with multiple projects put forward by local governments and the NZ Greens pushing for further work on the country’s regional rail system. According to Sweeney, CRL has a role to play in this.
“Given the project’s size and the contribution it can make, getting back to work quickly will be a significant and important contribution to the revival of the New Zealand economy.”
Similar to other projects in Australia, CRL is looking to take advantage of lower traffic levels to get ahead of schedule.
“It is our priority to keep the community, and relevant organisation and stakeholders informed if there are any changes,” said Sweeney.
A supplier has been chosen for the tunnel boring machine for New Zealand’s City Rail Link project, as a ground-breaking ceremony begins construction at the southern tunnel portal.
Herrenknecht will supply and build the $13.5 million tunnel boring machine, which will be shipped from its manufacturing site in China later in 2020 to be reassembled at the Mt Eden portal. Tunnelling will begin in February 2021.
The portal at Mt Eden will allow tunnelling to continue to central Auckland, and will open up land in the immediate vicinity for development, said NZ Transport Minister Phil Twyford.
“Not only will CRL boost Auckland’s transport system, it will stimulate urban regeneration with jobs and affordable housing around Mt Eden station and elsewhere along the city’s rail corridors – a completed CRL will double the number of the number of people within 30 minutes of central Auckland, New Zealand’s biggest employment hub,” he said.
According to Auckland Mayor Phil Goff the transport project will increase the use of rail in New Zealand’s largest city.
“The CRL will be a gamechanger for Auckland, allowing 54,000 people an hour to travel into the city at peak times. It adds capacity equivalent to three Harbour Bridges or 16 extra traffic lanes into the city at peak. The TBM will be the star of the show, providing the mechanical muscle required to get the job done as quickly as possible,” he said.
City Rail Link chief executive Sean Sweeney said that the breaking of ground in Mt Eden comes 12 months on from the collapse of rail track, signalling, overhead lines, control system rooms, communications and building works provider RCR Tomlison went into administration. RCR Tomlison’s NZ subsidiary was in partnership with WSP Opus at the time.
“Far from a setback, that collapse was the catalyst for big and rapid change inside the project and we are now celebrating the benefit of those changes – a CRL team that includes the best expertise from New Zealand and overseas that’s ready to deliver the next big step of an outstanding project for Aucklanders.”
As part of the works, the public will be able to name the tunnel boring machine, with the condition that the name be one of a prominent NZ woman.
Several contractors have allied to deliver a stations-and-tunnels programme of work for the City Rail Link project in Auckland following the signing of a new contract.
The ‘Link Alliance’ comprises of three construction companies and three design companies, including Vinci Construction, Downer NZ, Soletanche Bachy, WSP Opus, AECOM and Tonkin+Taylor.
“As a truly international team with members from more than 25 countries, we look forward to working alongside local communities to safely construct the City Rail Link over the next five years,” said Project Alliance Board chairman Pierre Bourgeois.
“Together with CRL Limited, we are committed to realising the outstanding legacy CRL will leave for New Zealand’s biggest city.”
The $4.4 billion (NZD) City Rail Link project, dubbed the country’s largest ever infrastructure project, involves the construction of a 3.5-kilometre, double track underground tunnel running from Britomart Transport Centre to Mount Eden Railway Station through Auckland’s CBD. The project is due to be completed in 2024.
Auckland Mayor Phil Goff said that the signing would help to ensure the delivery of a world-class transport system that will double the capacity of the city’s rail network.
“With the population of Auckland growing by 40,000 a year and public transport journeys exceeding 100 million in the past year, the completion of CRL can’t come soon enough,” Goff said.
Auckland’s City Rail Link works around the Wyndham Street West-Albert Street intersection have now been completed, freeing up access to the area for commuters and pedestrians after three years.
This means that drivers and pedestrians can now freely move east across Albert Street towards Queen Street and west past St Patrick’s Cathedral towards Hobson Street, though some restrictions do remain. Vehicles are still not allowed to turn right into Albert Street from either direction of Wyndham Street and the footpath on the cathedral side of Wyndham Street West is still a construction zone.
“We’re delighted to be able to reopen the intersection for through traffic,” says City Rail Link’s chief executive, Dr Sean Sweeney. “I want to thank people for their support and patience during our necessary work in the area, I acknowledge it’s been a long wait, but I hope it will now be easier for people to access this section of Albert Street.”
An 18-metre trench at the intersection that was dug at the intersection to accommodate the building of the tunnel in the area has now been backfilled. Tunnel construction under Albert Street is expected to be completed next month, with backfilling to follow in October.
The $4.4 billion (NZD) City Rail Link project involves the construction of a 3.5-kilometre, double track underground tunnel through Auckland’s central business district that runs from Britomart Transport Centre to Mount Eden Railway Station. The project is due to be fully completed by 2024 and is considered by City Rail Link itself to be New Zealand’s largest-ever transport infrastructure project.
“Further disruption will be unavoidable, but we are committed to minimising impacts and working with our partners to keep traffic, particularly bus services, moving through our work sites,” Sweeney added.