SURROUNDING STREETS: Mt Eden Road, Akiraho Street, Fenton Street, Shaddock Street, Flower Street, Nikau Street, Ruru Street, Ngahura Street, New North Road
This page is an archive for all Maungawhau Station main construction site notifications prior to 5/11/21.
Previous notifications
Mt Eden Main construction site - TBM return to Mt Eden site 22/12/21
Mt Eden Main construction site – Christmas Block of Line 10/12/21
Mt Eden Main construction site – Rock blasting schedule 26/11/21
Mt Eden Main construction site – Rock blasting schedule 15/11/21
Mt Eden Main construction site – Rock blasting schedule 1/11/21
Nikau Street - Upcoming nightworks
Work continues on site and at the intersection of Nikau and Korari Street for the diversion of the Huia 2 transmission watermain.
On Tuesday 24th August works will be carried out to connect the newly installed pipe to the WaterCare network. Work will start from 8am and continue throughout the day and into the night, until this connection is complete.
To support this activity at night, there will be lights in place and some vehicle movements around the works site. Teams on site will be working to mitigate impacts to site neighbours where at all possible.
Once the pipe has been installed and connected, this area will then be backfilled and reinstated and both lanes of Nikau Street reopened. This is expected to be complete in mid September.
Location of utilities nightworks at the Nikau and Korari Street intersection
Upcoming rock blasting
To support excavation for utilities work on site, rock blasting activity will take place in the centre of the Mt Eden construction site in the coming weeks.
This was previously notified to begin from the 9th August, but is now anticipated to begin on 20th August and will continue for a 6-week period with approximately one blast per week.
Exact dates and times for this activity will be confirmed and re communicated to residents ahead of this taking place.
However, to give our community more certainty, when blasting is required, it will always occur at the same time each day - at 10.32am and/or 2.32pm.
There is a large presence of basalt rock on site, and blasting this hard volcanic rock is the most effective way to fracture it for removal and avoids the need for prolonged and disruptive rock-breaking activities. It is managed by a series of controlled blasts using small explosive charges.
Due to the nature of the ground condition, it can make it difficult to determine if blasting is required until we reach the basalt layer. However, the team is conscious of limiting impacts to our residential neighbours and do our best to ensure you are aware of this activity taking place with as much notice as possible.
Rock blasting location shown in blue
Weekend work along the rail corridor, 10th - 11th July
To work on the existing rail tracks, Link Alliance utilises KiwiRail’s Block of Lines (BOL) which are short periods throughout the year when trains are not running on the rail network. The next BOL is Saturday 10th – Sunday 11th July.
Removal and installation of the Overhead Line Equipment (OHLE) masts and equipment
Saturday 10th and Sunday 11th July, 8am - 6pm
Where: Dominion Road overpass however the high-rail vehicle (HRV) will be accessing the rail corridor at Morningside
Equipment: High-rail vehicle, truck with hiab and trailer
What to expect: Likely impacts from noise and lights. Noise from plant and banging of steelwork with hammers. The high-rail vehicle is required to sound the horn before each movement. Vehicle and work lights will be used during reduced daylight in accordance with KiwiRail HRV plant operation rules and procedures.
Adjusting / removing rail hoardings Sunday 11 July from 2pm for 3-4 hours
Where: Dominion Road overpass
Scope of work: To allow access for other crews to complete their work, the hoardings need to be removed or relocated.
Equipment: Excavator and hand tools
What to expect: We expect there to be minimum noise and disruption. Vehicle movements.
Installing lighting and CCTV cameras Saturday 10th and Sunday 11th July, 8am - 6pm
Where: Temporary Services Bridge, Normanby Road
Scope of work: Continuation of work on the bridge in preparation for the opening of pedestrian access
Equipment: Hand tools
What to expect: We expect there will be minimum noise or disruption,
Various work at the rail level crossing Saturday 10th and Sunday 11th July, 8am - 6pm
Normanby Road bridge construction site
Scope of work:
Removal of the flashing lights and bells from the crossing
Installation of hoarding at Normanby Road level crossing
Closing current pedestrian crossing and relocating to the Temporary Services Bridge
Equipment: Crane, excavator, hiab truck
What to expect: We expect there to be noise, vibration, truck movements and a change of the pedestrian route. To reduce the impact of our work we will be installing noise mats and cones to support way finding.
Various works at the rail corridor Saturday 10th and Sunday 11th July, 8am - 6pm
Where: Rail corridor between Normanby Road and Mt Eden Road
Scope of work:
Installation and replacement of hoardings
Excavation and installation of utilities ducts
Equipment: Excavators, dump trucks
What to expect: We expect there to be noise, vibration, truck movements. We will be installing noise mats to reduce noise impacts.
17 June 2021
Sheet piling on Mt Eden Road
As part of the works to widen the rail corridor under Mt Eden Road bridge for the new City Rail Link (CRL) lines, a series of foundation works are taking place within our construction site to support the structure.
From 1 July, we will be installing sheet piles within site by our former 97 Mt Eden Road office. Sheet piles are segments of steel material that are driven into the ground using a crane with a vibrating attachment. They are used to provide ground retention and support future excavations.
These sheet piles will be installed in three locations (highlighted blue in the map below) and will take approximately two weeks in total to complete.
The main impact from these works will be vibration from the piles being drilled into the ground, however attended vibration monitoring will be performed at the start of this activity and readings will be taken from nearby monitors to ensure we comply with the limits.
Location of where the sheet piles will be installed highlighted in blue
Once we have completed sheet piling, we will then begin the demolition of remaining structure of the former 97 Mt Eden Road building.
Demolition will be performed using excavators to break down the walls and floor and will take approximately two weeks to complete.
Weekend works along the rail corridor 10th – 11th July
To work on the existing rail tracks, Link Alliance utilises KiwiRail’s Block of Lines (BOL) which are short periods throughout the year when trains are not running on the rail network. The next BOL is Saturday 10th – Sunday 11th July.
Over the weekend, the team will be removing some of the existing hoardings along the rail corridor near Mt Eden Road bridge and performing drainage works, which include excavating on the tracks and laying pipes. Once the work in the rail corridor has been completed, the team will backfill the area and compact the gravel with a static roller before laying tracks ready for trains to resume on the network.
Working hours over this BOL will be from 8am to 6pm and will include work on Sunday.
Works will be performed in the blue highlighted area on Saturday 10th - Sunday 11th July
05 May 2021
Upcoming 24-hour works: TBM supporting activities
As previously notified, we would like to remind you about the upcoming 24-hour operations on our Mt Eden construction site later in May in support of the Tunnel Boring Machine (TBM) activity. This is in addition to the notified nightwork currently taking place on site for TBM preparations.
Under our consent conditions, work can progress on site across a 24-hour period. We are mindful of our site neighbours, and our environmental team will closely monitor this activity to comply with requirements, reduce impact to neighbours where at all possible, and implement further mitigation measures where required.
The TBM will excavate two 1.6-kilometre-long tunnels from Mt Eden to central Auckland and connect with the tunnels already built from Britomart Station. Once the TBM begins its drive, it will work 24-hours, 7 days a week underground to bore the first City Rail Link tunnel to Aotea Station.
The Mt Eden site will be ‘base-camp’ for the TBM and the equipment and systems required to operate it. Therefore, additional supporting activities will also take place within the Mt Eden construction site 24 hours, 7 days a week to support this TBM drive.
All other work across our Mt Eden construction site will continue during our regular working hours, unless otherwise notified.
BIG: Tawa the Tower Crane
These on-site TBM supporting activities include:
An onsite technical area critical to supporting the tunnel boring machine’s (TBM) drive. It includes a water treatment plant and grout treatment plant, as well as storage and workshop areas for the team. These activities will be minimised at night.
‘Tawa’ our Tower Crane will work to lift the heavy concrete segments from the storage area and locate them closer to the tunnel portal, where they will be transported and loaded onto the TBM as it works to line the new CRL tunnel.
A 40-metre-long electric multi service vehicle will be used to transport people and materials in and out of the tunnel portal approximately every 30 minutes/as required.
The TBM’s conveyor belt will work to transport spoil from the TBM out into the Mt Eden construction site and into the spoil basin day and night. The conveyor belt will be maintained regularly to mitigate any noise impacts, and lights on the conveyor’s walkway will face down into the direct area to ensure safety for the team and reduce light for site neighbours.
Some small vehicles may be used at times where necessary to move pipes and other materials as part of the TBM operations.
From June, when the team have excavated 50 metres into the second mined tunnel, this mined tunnelling activity will also move to 24 hours. This will be 7 metres deeper than the first tunnel cavern and it is expected to have minimal impacts for site neighbours. More information about this activity will be re-notified closer to the time.
How we will mitigate any impacts of this activity on site:We are mindful that working longer hours means we are operating for longer periods near our residential neighbours, so we’ll be doing all we can to reduce any disturbance from our evening (post-7pm) works in particular.
All lighting will be assessed to determine where this can be minimised and mitigated to reduce impact for our site neighbours, while ensuring a safe working environment for our teams.
Our teams will continue to undergo training to ensure they are working safety and securely, while also keeping talking and shouting on site to a minimum in respect of neighbouring properties.
Vehicle movements will be reduced where at all possible.
Ruru Street-extension bridge & Road Changes on Ruru, Nikau & Korari Streets
From the 27th April a road change is required on the corner of Ruru Street and Nikau Street to make way for critical work on our construction site. To create the future Ruru Street-extension that will connect Ruru Street to the re-developed Mt Eden Station, large pre-cast concrete beams will need to be placed within our site.
By extending our construction site onto Ruru/Nikau Streets it will allow us the necessary space for a crane and to store and install the beams.
The beams which form the foundation for the Ruru Street extension bridge over railway lines will eventually be a pedestrian area leading to the new station. During the construction phase however, this bridge or slab will be used for site vehicle traffic that will enter through Ngahura Street and go around and across the construction excavation so it is critical to the sequence of works.
Installation of these beams will take approximately 10 days to complete.
There will be some noise from the crane lifting the beams into place, however this will occur between 7am – 7pm Monday – Saturday.
Extending our construction site means changing the road layout along Ruru, Nikau and Korari Streets. This is a temporary layout, however pending Auckland Transport approval it will become permanent for approximately two years. The layout change requires a one way traffic layout and parking removal on Nikau Street between Ruru and Korari Streets.
Update on our Mined Tunelling
Mined tunnelling continues onsite with 44 metres of tunnel now complete with the TBM shield and gantries now in position to start the necessary testing and commissioning prior to it’s launch.
Work continues on the second tunnel cavern which will be 7 metres deeper than the first tunnel cavern. Currently the team are excavating deeper into the ground to establish the work area, using Tawa the tower crane to lift equipment over the gantries and into the work zone before they begin excavation of the portal itself in the coming weeks.
Once the team have excavated 50 metres into this second tunnel, mine tunnelling activity will occur 24 hours, 5 days a week. However, as this activity will be taking place 50 metres from the tunnel entrance and this tunnel is lower in the ground, impacts are expected to be minimal for our site neighbours. We expect this will start in June 2021, however neighbours will be re-notified of this activity closer to the time.
Nikau Street Utilities Works
A series of partial and full road closures are planned for a portion of Nikau Street (between Flower and Korari Street) between May – to the start of September this year.
These lane closures are required as part of work to divert existing services in the area, these being overhead power cables and the existing Huia 2 transmission watermain that run along Nikau Street. The undergrounding of the existing overhead power lines is required as part of the permanent works for the Mt Eden Station, and is also required to be done before the watermain work then takes place.
The window to complete this work is in keeping with Watercare’s restrictions for service diversion to take place over the winter months.
The activity undertaken while these closures are in place, will involve saw-cutting, hydro-excavation, excavation, and crane and truck movements and it is anticipated that this is likely to cause some noise and vibration at times. Our team will seek to mitigate these impacts to site neighbours where at all possible and access to properties and businesses will be retained.
More specific information will be communicated to site neighbours located in close proximity to these works in the coming weeks.
Rock Blasting Reminder
A reminder that rock-blasting activity continues within both the centre and eastern areas of our Mt Eden Station construction site, given the large presence of basalt rock.
The next date for blasting is Friday 16th April at 2.32pm.
Due to the nature of the ground condition, it can make it difficult to determine if blasting is required until we reach the basalt layer. However, the team is conscious of limiting impacts to our residential neighbours and do our best to ensure you are aware of this activity taking place with as much notice as possible.
As there is a large presence of basalt rock on site, blasting this hard volcanic rock is the most effective way to fracture it for removal and avoids the need for prolonged and disruptive rock-breaking activities. It is managed by a series of controlled blasts using small explosive charges.
Earthing and bonding Friday 2 April - Monday 5 April 6am to 6.30pm
Where: In the rail corridor between North Eden apartments and Station R apartments
Scope: Installing of two sections of steel strip and guard conductors affixed to the plywood hoarding and bonded to existing rail track. This will ensure that the hoarding will not conduct electricity from the electrical train lines.
Time: Four days
Equipment: Small van, hand tools
What to expect:
Access will be required to both sides of the hoardings
This will be gained from Fenton Street and Ngahura Street.
Low level noise
Upcoming rock blasting activity
A reminder that rock-blasting activity continues within our Mt Eden Station construction site, given the large presence of basalt rock. This week, rock blasting activity will occur within the centre of the construction site on Thursday 25th March at 2.32pm and Friday 26th March at 10.32am.
As there is a large presence of basalt rock on site, blasting this hard volcanic rock is the most effective way to fracture it for removal and avoids the need for prolonged and disruptive rock-breaking activities. It is managed by a series of controlled blasts using small explosive charges.
Due to the nature of the ground condition, it can make it difficult to determine if blasting is required until we reach the basalt layer. However, the team is conscious of limiting impacts to our residential neighbours and do our best to ensure you are aware of this activity taking place with as much notice as possible.
To give our community more certainty, when blasting is required it will always occur at the same time each day - at 10.32am and/or 2.32pm.
Approximate rock blasting location shown in blue
What you can expect
The biggest impact of blasting is ‘startle’ (surprise at an unexpected noise) which we will minimise by keeping to a strict blasting schedule and using an advanced warning system before each blast. If you are near our construction site, you will hear an audible siren 5 minutes, and then 30 seconds, prior to the blast occurring.
Any effects will be fleeting and for some properties they won’t be noticeable at all. Special blasting mats will be placed over the charge site to minimise rising dust and prevent any small fragments of flying rock. Sensitive vibration monitors will also be placed in various locations around the construction site, including on a number of neighbouring buildings, so we can accurately assess and monitor the impacts of each individual blast on the surrounding area to ensure we’re staying within our consented vibration limits.
Upcoming 24-hour works: TBM preparation activity
We would like to inform you of the start of essential works that will require 24-hour operations on our Mt Eden construction site from mid-March onwards, to maintain momentum in the project.
Over the recent week you may have seen some changes on site, including the relocation of some of the Tunnel Boring Machine (TBM) gantries from around the construction site to closer to the tunnel portal, in the lead up for the TBM’s drive in late April.
From mid-March when the remaining gantries and TBM shield have also been relocated to this area, preparatory work on our Dame Whina Cooper TBM will begin to take place for 24-hours, 5 days per week at the tunnel portal site, on the corner of Nikau and Flower Street. This 24-hour activity will involve running the cabling through the TBM gantries and undertaking testing to ensure the TBM is ready for its tunnel boring drive in the coming months. A team of approximately 6 people will be involved in this activity, pulling the power and electrical cables through the 11 TBM gantries and connecting the different pieces together.
The TBM shield and half of the gantries will be located within the tunnel cavern, while the remaining will be located just outside of the portal area. These gantries provide the hydraulic, mechanical and electrical power the shield will need to excavate the tunnels, remove the excavated spoil, and install the precast concrete segments that will line the tunnels.
Hours of work for this activity will be 24 hours, Monday – Friday, and 7am-7pm Saturday. No works will be undertaken on Sunday and Public Holidays, unless otherwise notified.
At this stage, 24-hour work will only be at the tunnel portal site with some associated minor activity in the adjacent TBM technical area (shown on the map below). All other work across our Mt Eden construction site will continue during our regular working hours, unless otherwise notified.
Under our consent conditions, work can be undertaken on site across a 24-hour period. Our environmental team will closely monitor this activity to comply with requirements, reduce impact to neighbours where at all possible, and implement further mitigation measures where required.
Future TBM 24-hour works
Please note that these 24-hour works will continue until the TBM is ready to begin its drive in late April. Once the TBM begins its drive, it will work 24-hours, 7 days a week underground to bore the first CRL tunnel all the way to Aotea Station. Additional activities will also take place around the tunnel portal and within the Mt Eden construction site 24 hours, 7 days a week to support the TBM. These include:
The TBM’s Technical Area will support the TBM activities. When finished this area will include a Water Treatment Plant, Grout Treatment Plant, and storage and workshop areas for the team. Activities at night will be minimised.
‘Tawa’ our Tower Crane will work to lift the heavy concrete segments from the storage area and locate them closer to the tunnel portal, where they will be transported and loaded onto the TBM as it works to line the new CRL tunnel.
A 40-metre-long electric multi service vehicle will be used to transport people and materials in and out of the tunnel portal approximately every 30 minutes/as required.
From June, the conveyor belt transporting spoil from the TBM out into the Mt Eden construction site and into the spoil basin will be up and running. This will be maintained regularly to mitigate any noise impacts, and lights on the conveyor’s walkway will face down into the direct area to ensure safety for the team and reduce light for site neighbours.
A Telehandler and other vehicles may be used at times to move pipes and other materials as part of the TBM operations.
Excavation of the second mined tunnel which has recently started, may also take place 24-hours from late May once the team have excavated 50 metres in. This cavern will be 7 metres deeper than the first tunnel cavern and so it is expected to have minimal impacts for site neighbours. Neighbours will be re-notified of this activity closer to the time.
Further information on the TBM operations will also be communicated closer to the start of the tunnel boring drive to ensure our site neighbours are aware of the activities and mitigation measures in place.
How will we mitigate any impacts of this activity on site?
We are mindful that our construction site is surrounded by many residential properties and our environmental experts will continue to closely monitor activity and identify where further mitigation measures may be required
Our team is undertaking a comprehensive assessment of all lighting required on site to mitigate light impacts for our site neighbours
Our teams will continue to undergo training to ensure they are working safety and securely, while also keeping talking on site to a minimum in respect of neighbouring properties
Vehicle movements will be reduced where at all possible
Our team will continue to be available using the contact details below to answer any questions or concerns and follow up on any queries.
These working hours are aimed at maintaining momentum and programme to deliver the City Rail Link project for Auckland in 2024. We’re mindful that working longer hours means we are operating for longer periods near our residential neighbours, so we’ll be doing all we can to reduce any disturbance from our evening (post-7pm) works in particular.
Blasting 23 February
As previously notified, Link Alliance is currently undertaking a series of rock-blasting activities within our Mt Eden Station construction site. Our next blast will occur on Tuesday 23rd February at 2.32pm.
This activity will take place in the location of the future eastern CRL tunnel where there is a presence of large pieces of basalt rock.
Due to the nature of the ground condition, it can make it difficult to determine if blasting is required until we reach the basalt layer. However, the team is conscious of limiting impacts to our residential neighbours and we will do our best to ensure you are aware of this activity taking place with as much notice as possible.
We expect there may also be blasting activities early March, however we will confirm this with you closer to the time.
Mt Eden Site - Tower Crane Emergency Evacuation Drill
On Saturday 27th February, our team will be holding an emergency evacuation drill for our large Tower Crane on site, recently named ‘Tawa’.
The purpose of this drill will be for the team to practice the rescue system in place as part of the Emergency Action Plan for the Tower Crane.
If you are overlooking the site during this time, you may see a dummy hanging from the Tower Crane on a stretcher. A team of 3-4 people up the crane tower will relocate this safely to the ground before transporting it to one of the site exits.
This exercise will begin at 8.00am and will take approximately 45 minutes. Aside from seeing this activity taking place, there is not anticipated to be any impact for neighbouring residents. Depending on availability, Fire & Emergency New Zealand may also be involved in this exercise.
Blasting re-scheduled
As previously notified, a series of rock-blasting activities will continue within our Mt Eden Station construction site. The first blast has been rescheduled from Friday 18th February to Monday 22nd February at 2.32pm.
This activity will take place in the location of the future eastern CRL tunnel where there is a presence of large pieces of basalt rock.
Blasting this hard volcanic rock is the most effective way to fracture it for removal and avoids the need for prolonged and disruptive rock-breaking activities. It is managed by a series of controlled blasts using small explosive charges.
We expect there may also be blasting activities on either Tuesday 23rd or Wednesday 24th February, however we will confirm this early next week. Due to the nature of the ground condition, it can make it difficult to determine if blasting is required until we reach the basalt layer. However, the team is conscious of limiting impacts to our residential neighbours and we will do our best to ensure you are aware of this activity taking place with as much notice as possible.
What to expect:
The biggest impact of blasting is ‘startle’ (surprise at an unexpected noise) which we will minimise by keeping to a strict blasting schedule and using an advanced warning system before each blast. If you are near our construction site, you will hear an audible siren 5 minutes, and then 30 seconds, prior to the blast occurring. To give our community more certainty, when blasting is required it will always occur at the same time each day - at 10.32am and/or 2.32pm.
Any effects will be fleeting and for some properties they won’t be noticeable at all. Special blasting mats will be placed over the charge site to minimise rising dust and prevent any small fragments of flying rock. Sensitive vibration monitors will also be placed in various locations around the construction site, including on a number of neighbouring buildings, so we can accurately assess and monitor the impacts of each individual blast on the surrounding area to ensure we’re staying within our consented vibration limits.
Rock blasting activities starting Friday 19th February
As we continue to excavate parts of the new eastern CRL line, we have also continued to uncover large pieces of hard basalt rock. To remove this rock we need to carry out a series of additional basalt rock-blasting activities within our construction site, near our former 97 Mt Eden Road office.
Blasting this hard volcanic rock is the most effective way to fracture it for removal and avoids the need for prolonged and disruptive rock-breaking activities. It is managed by a series of controlled blasts using small explosive charges.
We anticipate the first blast will take place on Friday 19 February at 2.32pm. This blast will prevent multiple days of noisy and disruptive rock breaking, which we are particularly mindful of if COVID Alert Level 3 remains in place.
Due to the nature of the basalt rock, it is difficult to predict if an area requires blasting until we uncover the basalt layer during excavation. In the future, when we perform additional rock blasting on site, it will only ever occur at 10.32am and/or 2.32pm and as usual you will be notified of the date ahead of time.
The biggest impact of blasting is ‘startle’ (surprise at an unexpected noise) which we will minimise by keeping to a strict blasting schedule and using an advanced warning system before each blast. If you are near our construction site, you will hear an audible siren 5 minutes, and then 30 seconds, prior to the blast occurring. Our specialist blasting contractor, RedBull Powder Company Ltd, will also use a dedicated radio channel to listen in to the countdown sequence (in addition to the audible site sirens).
If you’re located near our construction site, it’s possible that you might feel a dull ‘thud’. Any effects will be fleeting and for some properties they won’t be noticeable at all. Special blasting mats will be placed over the charge site to minimise rising dust and prevent any small fragments of flying rock. Sensitive vibration monitors will also be placed in various locations around the construction site, including on a number of neighbouring buildings, so we can accurately assess and monitor the impacts of each individual blast on the surrounding area to ensure we’re staying within our consented vibration limits.
Ongoing piling activity
As previously updated, there is a range of ongoing piling activity taking place across our Mt Eden construction site to complete foundation works in preparation for the new City Rail Link (CRL) lines. This activity includes;
From 20th February – Piling will begin for two temporary post and panel walls between the base of Ruru and Ngahura Street. These walls will act as temporary support to allow our team to excavate deeper into the ground. It will take approximately two weeks to complete piling in this location.
From 22nd February – Piling will be undertaken in the eastern side of our site, close to the former 97 Mt Eden Road office that was recently demolished. These piles will make up the permanent foundations for the new eastern CRL tunnels. It will take approximately four weeks to complete piling in this location.
From 10th March – Piling for the new western CRL line will take place between the base of Ruru and Ngahura Street. This will take approximately two weeks to complete.
Following this, piling will continue in April between the base of Ngahura and Ruru Street for the trough structure of the western CRL line.
We are continuing to undertake a series of foundation works near the base of Ngahura Street, which includes piling and capping beam installation in preparation for connection of the new CRL line with the existing North Auckland Line (Western Line).
Diaphragm Wall installation
A diaphragm wall (or D-Wall) is a continuous structural concrete wall made of panels, constructed in a deep trench. A D-Wall is typically used to form an underground barrier or structure and is a construction method that is most often associated with creating new rail lines under roads. In this instance, the D-Wall installation at the Mt Eden site will provide the frame for the eastern trough where the Northern Auckland Line (Western Line) will connect with the new CRL lines, under Mt Eden road.
This upcoming D-Wall activity is located in the eastern area of the Mt Eden construction site, near the site office at 97 Mt Eden Road that was recently demolished (shown in blue on the map above). This work will involve using a hydrovac to locate below ground services and construction of a guide wall, which will be followed by the construction of the D-Wall.
Work will commence in mid February until late March for the first guide wall and D-Wall, and construction of the second guide wall and D-Wall will follow in late March for completion in late April.
Excavation activity
As part of relocating one of Auckland’s largest watermain’s - Huia II, preparatory works on site will begin from the first week of March to lay new pipes. This work involves a large amount of excavations within our construction site so the team can dig 12m deep. Work to form part of the new western CRL line within site between Ngahura and Ruru Street will also begin early March. These excavation activities on site include:
From 8 March – Digging a 12m deep trench in preparation to lay pipes for the Huia II relocation. This will occur within our site by the Ruru Street area and due to the large amount of hard basalt rock located there we will be performing rock breaking using a 47 tonne excavator. Due to the size of this excavator, it will require an early morning delivery. We will notify neighbours once a delivery date and time is confirmed. The excavation of this area is expected to take approximately three months to complete.
From 3 March – Between the Ngahura and Ruru Street area within our site, we will begin excavation for part of the Western CRL tunnel. We do not expect much basalt to be located in this area so rock-breaking will be minimal. This work will take approximately six weeks to complete.
Mid-March – We will begin excavation within our site where the new Mt Eden Station will be built, close to the Akiraho Street area. This will be to lay new stormwater pipes and as there is the presence of basalt rock it will take approximately six weeks to complete.
Mid-March – Once piling has completed for the eastern CRL tunnel within our site by Mt Eden Road, excavation will begin to dig deep and form the tunnel. As there is the presence of basalt in this area, rock breaking will be required, as well as possibly more blasting activity. This work is expected to take approximately six weeks to complete.
As we proceed with these excavations and uncover large pieces of basalt rock, production rock blasting may be required to break the rocks into smaller pieces. Blasting this hard volcanic rock is the most effective way to fracture it for removal and avoids the need for prolonged and disruptive rock-breaking activities. It will be managed by a series of controlled blasts using small explosive charges. We will notify neighbours ahead of time if blasting is required.
Belt storage tower and spoil basin
Construction continues in the eastern area of the site for the spoil basin, where the Tunnel Boring Machine’s conveyor belt will place the excavated spoil. Spoil from other excavation taking place on the construction site will also be placed here. Once construction of the spoil basin is completed in early March, a travelling conveyor will be installed over the top of the basin to enable the spoil to be placed into the four bins. In April, a shed will be erected over the top of the spoil basin. Trucks will then collect the spoil to remove it off site during our regular working hours.
In support of the TBM’s conveyor belt and spoil removal, a vertical belt storage tower will begin to be established on site in late February. As the TBM travels further through the tunnel, the conveyor belt will also extend in length, meaning an additional supply of the belt will be stored on site. Made up of 4-5 containers stacked on top of each other, the belt storage tower will hold 500m worth of conveyor belt, and each time the TBM travels 250m, additional belt will be added.
Image showing the belt storage tower on the left, and spoil basin shed on the right
Second overnight concrete pour
As previously notified, there was some recent nightworks activity at the Mt Eden construction site on Friday 5th February to undertake a concrete slab pour. The second of these notified overnight concrete pours is currently scheduled for Wednesday 3rd March and will take place on site near the base of Ruru Street.
This slab is required to be poured prior to the preparation and launch of the TBM in April. Due to the constraints of pouring concrete in warm weather, and the amount of concrete that is required to be transported to site for the large concrete slab of this size (approximately 400m2 in area), concrete trucks will begin pouring concrete from 4am. Site set up will take place the day before, although the team will arrive from 3am on the morning of the 3rd March.
This concrete base slab will make up the base of the future City Rail Link western tunnel and is eventually where the underground platform will sit. Looking forward, as works at the Mt Eden construction site continue to gain momentum, these large concrete pours are likely to occur more regularly as the cut and cover tunnels for the new City Rail Link are established. However, in cooler months they will be able to start later in the morning and if nightworks are required to undertake this activity again in the future, neighbours will be re-notified.
Road closure Ngahura Street (northern end) 7am to 7pm, Thursday 18 February
We will be carrying out works during this time to fix the road (weather dependent). Residents and business will still have road access.
The work will include removing the old road surface, and laying new asphalt to repair the road.
Equipment: A jackhammer, excavator, small trucks
What to expect: This work is being carried out to repair the road surface at the Northern end of Ngahura Street. Road access will be maintained for residents and businesses. Noise mitigation will be used where possible to minimise the impact.
As with all our construction activity, we will be monitoring for noise, dust and vibration and have monitoring equipment in place that will alert us if we are going over set limits. We will also be:
Using attended monitoring during construction to measure noise and vibration levels so we can make adjustments to our construction methods, if necessary
Receiving deliveries within normal working hours (where possible)
Scheduling concrete deliveries within normal working hours (where possible)
Keeping you informed and giving plenty of advance notice about any works that need to take place outside of normal working hours
We’ll be working between 7am and 10pm Monday to Friday and 7am – 7pm on Saturday. We will keep you informed regarding any work that falls outside of these hours, further details and any changes.
Huia 2 Watermain Installation - Date to be confirmed - Fenton Street
Excavate a 4 meter wide trench along Fenton Street in stages starting from the eastern end, install 1300mm diameter pipe, backfill each area, compact and asphalt.
Time: Approximately three months to complete
Equipment: Two large excavators, concrete breaker, hydrovac, compactor, 6-8 wheel trucks
What to expect:
Noise and vibration from excavation, concrete breaking and compacting
Traffic management in place to maintain vehicle access to private property
To enable continued traffic movement, the footpath on the corner of Wynyard Road will be incorporated into the road and pedestrians will be diverted onto the eastern side of the road.
Technical area in Shaddock Street
This is about the establishment of the ‘Technical Area’ situated in the Shaddock Street end of our construction site. This section of our construction site is critical to supporting the tunnel boring machine’s (TBM) drive to create the twin 1.6km tunnels from Mt Eden to the new Aotea Station. The technical area will be made up of:
Water treatment plant
Grout mixture plant
Five silos
Storage containers
Water Treatment Plant
As previously notified, we are currently constructing a Water Treatment Plant (WTP) within the technical area of our construction site. It is anticipated to be fully established by March before the TBM starts it’s drive.
A Water Treatment Plant will be used to improve the quality of water used and collected on site. This includes water that is collected in drainage from rainfall on the construction site, as well draining water from the use of the Tunnel Boring Machine, Dame Whina Cooper. The plant is made up of three tanks of varying sizes with the tallest being 15m high.
On completion, this Water Treatment Plant will be able to treat in peak 450m3/h water, with a goal of being able to manage a 1:50 year rainfall event and to meet our sustainability requirements, this being a 5% reduction in potable water use.
As this WTP will be connected to the TBM system, some pipes will go from the portal area to the construction site’s Technical Area, and requiring a buffer tank that will be situated at the top of the portal head on the corner of Flower and Nikau Street. This buffer tank will be behind the hoarding (fences) within our construction site.
Below: Example of what the WTP will look like once installation is complete
Grout Mixture Plant
The grout mixture plant (GMP) that will be arriving to the technical area at the end of March will be responsible for mixing grout that the TBM will use to soften the soil during the drive. The ingredients for the grout are a mixture of cement, fly ash, water and bentonite.
These materials will be pumped to the GMP from the nearby silos. The GMP will not be operating continuously, only when more grout is required for the TBM drive. There will be instances when grout needs to be mixed outside of our current working hours however we expect the noise impacts to be minimal.
Silos
Within the technical area there will be five silos ranging from 10m-16m in height and they will arrive and be installed at the end of March. These silos will contain a mix of ash, cement and bentonite that will feed into the grout mixture plant. To supply these mixes there will be delivery trucks that will pump them into the silo. These deliveries will begin in April and will only occur during the day.
Storage Containers
Already within the technical area, there are two blue rectangular storage containers that contain tools and spares for the TBM and technical area. Before the TBM drive a roof will be placed over-top of the containers to provide shelter for our workers.
What will the technical area look like once it is completed?
Technical area working hours
Currently our normal working hours are 7am-7pm Monday – Friday and 7am-7pm Saturday. When the TBM begins its drive at the end of April, support activities for the TBM will operate 24/7. This means that from the end of April there will be 2-3 workers operating in the technical area between the hours of 10pm-7am, Monday – Sunday to support the WTP and GMP. We expect there to be little to no noise from the technical area and to minimise impacts to surrounding neighbours, lights in the area will be low and angled only into the working area.
TBM and Mine Tunnelling Activity
In the lead up to the starting of our Dame Whina Cooper Tunnel Boring Machine (TBM) in April this year, a range of work is taking place on our Mt Eden construction site in readiness for this event. This update provides an overview of the activity that is happening on site in preparation for the TBM to start its drive.
Our TBM is custom made especially for the City Rail Link (CRL) tunnels. At seven metres in diameter and 130 metres long, the TBM will build two parallel tunnels each 1.6km in length, under the city. The TBM is cylindrical in shape and made up of two main components: a rotating cutterhead at the front and a trail of backup gantries behind. The cutterhead bores through the earth, catches the spoil and places it on a conveyer belt for removal.
Just behind the cutterhead, a mechanism fixes concrete panels to the freshly dug out tunnel. Further back is the mechanical heart of the TBM – the control room, followed by ventilation and fire suppressant systems, an electrical transformer and bentonite tanks. There is also a breakroom and bathrooms for a crew of about 12 working on board 24/7. Powerful electric motors and hydraulic systems drive it forward about 32 metres a day.
Upcoming TBM supporting activity
From the 15th of February, the gantries which will eventually connect behind the cutterhead and shield (the front end of the TBM) and hold the equipment required for its journey, will begin to be moved from their current location on site closer to the tunnel portal to prepare for their installation. The first five gantries will be moved by truck and trailer, transporting one per day. The other remaining 5 gantries will then be moved from the 8th of March, once the first set of gantries are set up within the tunnel cavern.
On the 24th February, the cutterhead and shield will be moved from its current position on site to be placed in front of the tunnel portal. The shield will sit on a cradle that allows it to be jacked up and placed on a trailer and transported via truck to the tunnel portal. Two to three trucks will be used to transport the trailer due to the weight of the TBM and breaking capability required. Although the TBM will not start its drive until late April, the shield is required to be moved at this time to allow time to connect it to the rest of the machine and carry out testing.
Another key supporting activity happening for the TBM’s preparation is the preassembling of the conveyor which will catch the spoil and transport it out of the tunnel to the Mt Eden site for removal. The conveyor will begin to be set up in early-mid February. Once the TBM begins its 24-hour drive, the conveyor will be maintained regularly to ensure it is running smoothly and to mitigate any noise impacts.
Construction continues in the eastern area of the site for the spoil basin, where the conveyor belt will place the excavated spoil. Once construction is completed in early March, a travelling conveyor will be installed over the top of the basin to enable the spoil to be placed into the four bins. In April, a shed will be erected over the top of the spoil basin. Trucks will then collect the spoil to remove it off site during our regular working hours.
In support of the conveyor belt and spoil removal, a vertical belt storage tower will begin to be established on site in late February. As the TBM travels further through the tunnel, the conveyor belt will also extend in length, meaning an additional supply of the belt will be stored on site. Made up of 4-5 containers stacked on top of each other, the belt storage tower will hold 500m worth of conveyor belt, and each time the TBM travels 250m, additional belt will be added.
Finally, the concrete segments that the TBM will install within the tunnel will begin to arrive on site from early April and will be stored in a designated area on site near the Tower Crane, for when the TBM is ready to begin its drive.
Mine tunnelling update
The team have made strong progress in excavating 44 metres of the top heading of the tunnel cavern and are now focussed on excavating the bottom bench of this 44-metre cavern. When the excavation of both the top and bottom of this cavern is complete, the team will excavate a further 8 metres to create a ‘stub tunnel’ for the TBM to begin its drive. It is expected that this activity will be completed by mid-February to allow for preparation work for the TBM to take place.
In late March, the team will begin work to prepare for the excavation of the second tunnel cavern, which will be 7 metres deeper than the first tunnel cavern. Once the team have excavated 50 metres into this second tunnel, mine tunnelling activity will occur 24 hours, 5 days a week. However, as this activity will be taking place 50 metres from the tunnel entrance and this tunnel is lower in the ground, impacts are expected to be minimal for our site neighbours. Neighbours will be re-notified of this activity closer to the time.
How we will manage the impacts of this work
As with all of our works, we will be monitoring for noise, dust and vibration and have monitoring equipment in place that will alert us if we are going over set limits.
We will keep you informed and giving plenty of advance notice about any works that need to take place outside of normal working hours.
The team on site and our environmental experts will closely monitor and review activity to determine where any further mitigation measures can be put in place.
Demo office building - currently
Where: 97 Mt Eden Road (shown in blue in image below)
Scope of work: Demolish building using excavators and concrete breakers – more detail will be advised closer to the time
Duration: Approximately five weeks
Equipment: Excavators, concrete breakers, vibro-rollers
What to expect:
Noise, dust and vibration from excavation, concrete breaking, compacting
Site preparation - Friday 29 January to end of April
Where: Within 97 Mt Eden Road site
Scope of work:
Removing existing sheet piles - duration 2 days
Hydrovac to locate below ground service
Excavating diaphragm walls
Guide wall construction
Diaphragm wall construction
Piling - approximately 50 to be installed
Duration: Approximately two months
Equipment: Hydrovac truck, piling rig, compactor, concrete breaker, excavator, trucks
What to expect:
Noise and vibration
Piling works
Mt Eden Station Site - Piling Activity
This is an update about ongoing piling activity taking place across our Mt Eden construction site over the coming months, in order to complete foundation works in preparation for the new City Rail Link (CRL) lines.
This includes:
Piling on site near the base of Ruru Street where the new underground CRL station platform will be constructed
Piling for a temporary post and panel wall in the area between the base of Ruru and Ngahura Street
Piling for the cut and cover tunnel of the new western CRL line will take place also between the base of Ruru and Ngahura Street
In preparation of connecting the new CRL line with the existing Western Line (North Auckland Line), we are undertaking a series of foundation works which includes piling and capping beam installation
Finally, piling will also take place in the eastern area of the site, near the soon to be demolished site office at 97 Mt Eden Road, in order to carry out foundation works for the eastern CRL line.
Equipment used for these works includes a piling rig, excavators, concrete truck, truck to remove spoil, and hand tools. This activity will be carried out during our regular construction working hours of 7am – 7pm Monday to Friday, and 7am – 7pm on Saturdays.
How we will mitigate the impacts of this work:
You may experience some noise, vibration, and dust from these activities, noise mats will be used around the piling work site and equipment, and water misters and cannons will be used to dampen the material and reduce dust where required.
As always, our onsite environmental advisers will closely monitor this activity to determine if any further mitigation measures are required.
Nightworks: Concrete slab pour 5 and 24 February
We will be carrying out nightworks activity at the Mt Eden construction site in the coming weeks to undertake two concrete slab pours, on Friday 5th February and Friday 24th February.
These slabs are required to be poured prior to the preparation and launch of the Tunnel Boring Machine in April, when following this the team will build a structure over the trench where the slab is to allow for the diversion of a stormwater pipe. This stormwater pipe must be diverted in time to meet WaterCare’s scheduled outage window, and therefore the pouring of these slabs in February is critical to enable this sequence of work to take place.
Due to the constraints of pouring concrete in warm weather, and the amount of concrete that is required to be transported to site for the large concrete slabs of this size (each approximately 400m2 in area), concrete trucks will begin pouring concrete from 4am. Site set up will take place the day before, although the team will arrive from 3am.
These two concrete base slabs will make up the base of the future City Rail Link western tunnel and is eventually where the underground platform will sit. Looking forward, as works at the Mt Eden construction site continue to gain momentum, these large concrete pours are likely to occur more regularly as the cut and cover tunnels for the new City Rail Link are established. However, in cooler months they will be able to start later in the morning.
As our construction site borders a residential area, we are mindful of our neighbours. These two initial concrete pours are considered a trial, whereby the team will investigate and undertake a range of options to mitigate impacts to neighbours where practicable. If nightworks are required to undertake this activity again in the future, neighbours will be re-notified.
How we will mitigate the impacts of this work:
Once the concrete begins to be poured, it must continue until the area is complete to ensure the quality of the finished slab. This means there will be a steady flow of concrete trucks accessing the Mt Eden construction site through Ngahura Street from 4am. The team on site will have spotters (people) in place to guide the trucks and make sure their lights are turned off, and that there is no idling, high engine revs, horns or shouting to minimise disruption to site neighbours.
As well as the trucks accessing the site to deliver the concrete, the team will be using two concrete pumps and vibrators to lay the concrete slabs. A four-metre-tall noise mat structure will be erected around the pumps to reduce any noise from this activity.
Finally, the team on site and our environmental experts will closely monitor and review this activity to determine if any further mitigation measures can be put in place for future works.
Rendall Place Service Investigations
From Monday 25th January we will be undertaking utility investigations at the bottom of Rendall Place near the entrance to Basque Park. This is to better understand the stormwater and other local services in this area, as part of utility works for the City Rail Link Mt Eden Station site.
To perform this work, the team will use a hydro excavation truck to excavate around the services as well as a small excavator to remove the asphalt and then backfill the area. Worksite exclusion zones will be in place at the bottom of Rendall Place to ensure the safety of the community and the team. The bottom end of Rendall Place will be limited to one lane with restricted to none on street car parking near the worksite. While this work is taking place, noise mats will be erected around the worksite to mitigate any noise from the machinery. We expect it will take five days to complete the investigations and the team will be working between 7am and 7pm to complete the work.
This work will be done in two stages, with the initial worksite shown in green in the image below.
The worksite will then be extended to include the bottom end of Rendall Place, temporarily restricting additional car parks near the entrance to Basque Park, as shown in green in the image below.
How we will mitigate any impacts of this work
While the bottom end of Rendall Place will be limited to one lane with restricted to none on street car parking; resident access will remain.
A traffic controller will be in place to direct and manage traffic and pedestrian movements.
You may experience some noise and vibration from the use of the hydro excavation truck and excavator, however, noise mats will be installed around the work area to reduce noise impacts where possible.
Update on mining hours (posted 18 December 2020)
Regarding the 24-hour mine tunnelling that was recently notified. These 24-hour works are now on hold, and the mine tunnelling activity will currently only continue to take place during our regular construction hours.
Mine tunnelling is being carried out at our tunnel portal site at the corner of Nikau and Flower Street, to excavate the first 51 metres of the tunnel (called the stub tunnel), before the Tunnel Boring Machine breaks in and takes over the tunnelling work in April 2021.
Recently the team has made significant progress in excavating approximately 22 metres of the 51 metres required to establish the stub tunnel, therefore the demand to carry out 24 hour works is not required at this stage. 24-hour works will be revisited in 2021 in support of the TBM commencing its journey, and any 24-hour works will be re notified in advance.
Mine tunnelling activity will still take place over this holiday period, although not on Sundays and public holidays and within normal site working hours of Monday – Friday 7am-10pm and Saturday 7am-7pm.
We are mindful that our construction site is surrounded by many residential properties and our environmental experts will continue to closely monitor noise and vibration.
We expect there may be some low-level noise and vibration when we undertake our digging and drilling activities, however as we mine deeper into the tunnel portal these impacts will lessen.
Other mitigations we have in place include placing a curtain at the entrance of the portal, reduce the volume of reversing alarms on all machinery and scheduling noisier activities to day shifts.
Please note that lights will be turned on at the portal site during night works; however, they will be angled down directly onto the work site to avoid light pollution to surrounding properties
Night works - Mt Eden Rd closure Tuesday 15th December
9.00pm - 5.00am
Where: Mt Eden Rd bridge
Scope: We will be pouring and vibrating concrete on the Mt Eden Road Bridge. This work will result in Mt Eden Road, between Boston Road and Enfield Street being closed to traffic during this time.
Duration: Tuesday 15th December, 9.00pm - 5.00am
Equipment: A concrete pump and truck and concrete vibrator will be used. A concrete vibrator is used to help settle the concrete and force any trapped air bubbles out of the concrete mixture. This ensures the result is more compact and level and aids in long-term durability. 6-8-wheel trucks and hand tools will also be utilised.
What to expect:
A full road closure will be in place on Mt Eden Road between Boston Road and Enfield Street.
Traffic Controllers on hand to maintain access to private properties within the road closure
Some noise may be experienced from the concrete pump and concrete vibrator, however sound reducing matts will surround the site to help minimise any noise disruption.
Access to all private properties will be retained
When: Commencing 17th December
Where: At the tunnel portal site on the corner of Nikau and Flower Streets.
Scope: Mine tunnelling is an essential part of the construction process to enable the launch of the Tunnel Boring Machine (TBM). Mine tunnelling will be used to excavate the first 51 metres of the tunnel (called the stub tunnel), before the TBM breaks in and takes over the tunnelling work.
Our new working hours are aimed at maintaining momentum and programme to deliver the City Rail Link project for Auckland in 2024. During the 24-hour operations the activities that will commence include digging at the portal face and removing the spoil, spraying concrete (shotcrete) inside the cavern to stabilise the foundation and drilling activities for temporary ground support during excavation.
Duration: 24 hours Monday – Friday, and 7am-7pm Saturday.
No works will be undertaken on Sunday and Public Holidays. These works will continue for four months until we have mined 51 metres deep and the TBM can begin its drive in April 2021.
Equipment: Mine tunnelling involves the use of some large equipment, including a drilling rig called a “Jumbo”, a tunnelling compact excavator, a Shotcrete spraying machine and other supporting machinery such as a dump truck and concrete mixer. To start, the Jumbo will sit at the portal platform adjacent to the intersection of Flower and Nikau Streets and will be used to mine the first 51 metres of the new tunnels, before the TBM breaking in.
What to expect:
We are mindful that our construction site is surrounded by many residential properties and our environmental experts will continue to closely monitor noise and vibration.
We expect there may be some low-level noise and vibration when we undertake our digging and drilling activities, however as we mine deeper into the tunnel portal these impacts will lessen.
Other mitigations we have in place include placing a curtain at the entrance of the portal, reducing the volume of reversing alarms on all machinery and scheduling noisier activities to day shifts.
Please note that lights will be turned on at the portal site during night works; however, they will be angled down directly onto the work site to avoid light pollution to surrounding properties.
As with all our works, we will be monitoring for noise, dust and vibration and have monitoring equipment in place that will alert us if we are going over set limits.
Christmas Block of Line (BOL) works- Sunday 26 December to Sunday 31 January 2021
Saturday 26 December 2020 – Sunday 10 January 2021 (inclusive)
Kiwirail will complete important improvements and maintenance work across the network, while no trains are running
During this time, Link Alliance will undertake a variety of construction activities along the rail corridor between Grafton scissors and Dominion Road overpass
Monday 11 January – 31 January 2021
Freight trains, work trains and hi-rails resume (no passenger trains)
Link Alliance will continue with BOL activities and resume “business as usual” construction activities on site
During Block of Line Works we will be working outside of our normal working hours, including works on Sundays and Public Holidays
Demolition of the remaining Mt Eden station platform - Saturday 26 December to mid January 2021
Where: Mt Eden station site, within the rail corridor
As part of preparatory works to build the new Mt Eden Station platform for the North Auckland Line (NAL), the remaining platform is to be demolished. To demolish the platform, we will be using an excavator to demolish and break away the concrete, this will be followed by backfilling and levelling the area using a vibro-roller. This work will take approximately three days to complete.
To make way for the equipment used during the demolition, we need to remove some of the hoarding (fencing around the site), and this will be reinstated once the works are complete
Scope: In conjunction with this, we are removing a small section of the existing tracks. This is so we can excavate underneath and install a new pipe for the stormwater connection. Once complete a new track formation for this section will be constructed. This track formation work will take approximately three weeks.
Within the rail corridor during this time, we will also be drilling two piles, one to support the future emergency footbridge to the station and the other for the new overhead line equipment mast. This piling work will take approximately one week.
We will begin construction for the new NAL platform from Wednesday 13th January.
Duration: Saturday 26th December – Mid January 2021
Monday – Sunday 7.00am – 10.00pm
Boxing Day and New Years Day 8.00am – 10.00pm
Equipment:
To demolish the platform and undertake track formation works, a concrete breaker, excavator, vibro-roller, and compactor will be used.
To remove and reinstate the hoarding, a telehandler and excavator will be used, as well as hand tools - tension control bolt/hydraulic wrench or manual torque wrench
A piling rig, excavator, hand breaker, small digger and concrete truck will be used for the piling works.
What to expect:
You may experience some noise, vibration and dust from concrete cutting, drilling and vibro-rolling activity
These will be mitigated using noise mats on fences and around specific equipment
Water misters and cannons to dampen the material and reduce dust.
Foundation works for the Western Grade separation - Commencing Monday 28th December
Where: Within the rail corridor at the base of Ngahura Street
Scope: In preparation of connecting the new City Rail Link line with the existing Western Line (North Auckland Line), we are undertaking a series of foundation works including:
Post and panel wall: Construct a post and panel wall which involves drilling core holes into the ground and putting posts in place – a retaining wall between the existing rail tracks and the future CRL line.
Piling and capping beam installation: To support the future station egress, from mid-January we will be piling and installing a concrete beam (capping beam) over the existing piles.
Duration: About six weeks from 28th December Monday to Sunday 7am to 10pm. Boxing Day and New Years Day 8am to 10pm.
Equipment: Telehandler, Piling rig, excavator, hand breaker, small digger, concrete truck, truck to remove spoil, hand tools.
What to expect: You may experience some noise, vibration, and dust from these activities, noise mats will be used around the piling work site and water misters and cannons will be used to dampen the material and reduce dust.
Hoarding relocation along Nikau Street 5 January to 26 January 2021
Where: From the corner of Nikau and Flower St to the corner of Nikau and Ruru Sts
Scope: As part of supporting the tunnel boring machine’s drive, we require a large amount of electricity to keep the machine running 24/7. To do this we will be installing two power transformers within the Nikau Street side of our construction site, next to the tunnel portal. To make room for the transformers we are required to extend out the hoarding (fence) that separate Nikau Street and our construction site.
The hoarding will be moved out four metres onto Nikau Street to accommodate the large machinery. While this work is underway, a traffic management plan will be in place and Nikau Street will become a single lane with stop/go signals. The footpath on the construction side of Nikau Street will close, and pedestrians will be directed to the other side of the road. While traffic management is in place, access to all properties will retain.
What to expect:
Nikau Street will be reduced to a single lane only, with stop/go signals installed to manage traffic.
There may be some noise and dust as the existing hoardings are uninstalled, however noise mats and water misters will be used when concrete cutting takes place