Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Giant “straws” help reconstruct Auckland’s causeway

Giant “straws” help reconstruct Auckland’s causeway

More than 10,000 wick drains have been “planted” beside the causeway on Auckland’s Northwestern Motorway (State Highway 16) to help remove sea water from thick mud as part of the NZ Transport Agency’s Causeway Upgrade Project.
The drains – made from plastic and fabric - are planted 10-15 metres deep in marine mud on both sides of the Traherne Island area. They work like elaborate drinking straws, and are placed 1.3m apart draining water from deep underground to help with the consolidation of the layers of marine materials.

“Intensive ground reclamation like this is an important part of the project’s work to upgrade and improve this section of the motorway,” says the Transport Agency’s Highways Manager, Tommy Parker.

“Draining water from the marine mud needs to be done carefully and takes time to be done effectively. We are mindful to protect the environment while we work, installing new bird roosts for species which inhabit the area, and silt fences.”

A two to three metre-deep layer of fill, or drainage blanket, using more than 26,000 truckloads of marble-sized quarry stones, has now been spread on top of the wick drains to help squeeze water out of the mud below, a process that will take up to 12 months. When the results indicate that the ground is stable, construction of new motorway lanes will start on top of it.

Key features of the 4.8km-long project being delivered by the Causeway Alliance include widening the motorway between the Great North Road interchange and the Whau River bridge at Te Atatu. When finished in early 2017, the causeway will have been raised 1.5m to stop flooding at extreme high tides, there will be four lanes city-bound and four/five lanes westbound with dedicated bus lanes in each direction, and the existing Northwestern cycleway between Great North Road and Te Atatu will be upgraded.

Mr Parker says as much work as possible is done during daytime off-peak hours to minimise any disruption to drivers and to avoid disturbing neighbours with construction noise at night.

“We appreciate drivers’ co-operation while we get the upgrade work done. The motorway runs through a live and busy construction site and it is important that they observe the 80kph speed limit between St Lukes and Te Atatu for their safety and the safety of our workers.”

The Causeway Alliance - the Transport Agency, AECOM, Coffey, Fulton Hogan, Leighton Contractors and Sinclair Knight Merz – is completing the upgrade.
The project is one of five underway or planned to finish the 47km-long Western Ring Route along the Southwestern, Northwestern and Upper Harbour motorways, which is identified by the Government as one of its Roads of National Significance to support New Zealand’s future prosperity.

The others are construction of the Waterview tunnels to connect the Southwestern and Northwestern motorways, upgrades of the Lincoln Road and Te Atatu Road interchanges, and improvements to the Northwestern Motorway from St Lukes to Great North Road.

Mr Parker says there will significant benefits for drivers when the Causeway Upgrade Project and the other related works are completed.

“For the first time, Auckland will have direct motorway access between the CBD and the airport, and the Western Ring Route will also better connect people and freight with the city’s rapidly growing areas in the north-west and south west.”

Mr Parker adds that the Western Ring Route will also benefit the Northland and Waikato/Bay of Plenty regions.

“It’s a key part of a massive investment in infrastructure in Northland and Waikato/Bay of Plenty needed to meet the demands of rapid economic and population growth underway in the top half of the North Island,” he says.

For more information on about the Causeway Upgrade Project visit: www.nzta.govt.nz/projects/sh16causeway

ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Anzac Issue Out Now: Werewolf 47

Alison McCulloch: Lest We Remember

Local iwi have plans to spruce up the Te Ranga site as part of the 150th commemorations this year of key battles in the “New Zealand Wars”, but not a lot of money to do it with.

Information gathered from numerous government agencies shows that while more than $25 million is being spent on monuments and commemorations relating to foreign wars, primarily World War I and its centenary, only around $250,000 has been set aside for those fought on our own soil. More>>

Anne Russell: Anzac Day - Identity Politics, With Guns

Even cursory research into media reports from the past forty years reveals a cultural shift in the commemoration of Anzac Day. Among other things, turnout at Dawn services has increased significantly in recent decades.

Contemporary numbers are estimated at 3,000-4,000 in Wellington, and 10,000-15,000 in Auckland. Newspaper reports from the 1970s and 80s estimated Wellington turnouts at 300-800, and Auckland at anywhere from 600 to 4,000. More>>

 

Parliament Today:

Spookwatch: New Inspector-General Of Intelligence And Security Appointed

Prime Minister John Key hasannounced the appointment of Cheryl Gwyn as Inspector-General of Intelligence and Security. The appointment was made by the Administrator of the Government on behalf of the Governor General and is for a term of three years. More>>

Crowdsourcing: Green Party Launches Internet Rights And Freedoms Bill

The Green Party has today launched the Internet Rights and Freedoms Bill, New Zealand’s first ever Bill crowdsourced by a political party. More>>

ALSO:

Gordon Campbell: On The Shane Jones Departure

Shane Jones has left Parliament in the manner to which we have become accustomed, with self interest coming in first and second, and with the interests of the Labour Party (under whose banner he served) way, way back down the track. More>>

COMMENT:

Multimedia: PM Post-Cabinet Press Conference - April 22 2014

The Prime Minister met with reporters to discuss: • The recent improvement in the economy with a growing job market • Income and wealth inequality • Easter trading laws • The New Zealander killed in a drone strike in Yemen... More>>

ALSO:

Easter Trading: Workers 'Can Kiss Goodbye To Easter Sunday Off'

The Government’s decision to “reprioritise” scarce labour inspector resources by abandoning the enforcement of Easter Sunday Shop Trading laws means workers can kiss goodbye to a guaranteed day off, says Labour’s Associate Labour Issues spokesperson Darien Fenton. More>>

ALSO:

ACT Don't Go For Maximum Penalty: Three Strikes For Burglary, Three Years Jail

Three strikes for burglary was introduced to England and Wales in 1999. As in New Zealand, burglary was out of control and given a low priority by the police and the courts. A Labour government passed a three strikes law whereby a third conviction for burglaries earned a mandatory three years in prison... More>>

ALSO:

Gordon Campbell: On Drone Strikes And Judith Collins‘ Last Stand

The news that a New Zealand citizen was killed last November in a US drone attack in Yemen brings the drones controversy closer to home. More>>

ALSO:

Elections: New Electorate Boundaries Finalised

New boundaries for the country’s 64 General and seven Māori electorates have been finalised – with an additional electorate created in Auckland. More>>

ALSO:

Policies: Labour’s Economic Upgrade For Manufacturing

Labour Leader David Cunliffe has today announced his Economic Upgrade for the manufacturing sector – a plan that will create better jobs and higher wages. More>>

ALSO:

Gordon Campbell: On The Life And ACC Work Of Sir Owen Woodhouse

With the death of Sir Owen Woodhouse, the founding father of the Accident Compensation Scheme, New Zealand has lost one of the titans of its post-war social policy. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news