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

 


Lower Hatea River Crossing components arriving

Media Release

21 January 2013

Lower Hatea River Crossing components arriving

Major components of Whangarei’s Lower Hatea River Crossing arrived in Whangarei today.

The deck of the bascule and pieces of the huge J-beams that will form the bridge’s distinctive hook-like profile arrived at Marsden Point from China on Monday, and two 9.5-tonne hydraulic rams that will lift and lower the bascule (lifting platform) are making their way by ship from Holland.

The rams have been manufactured by Eaton Hydraulics in Eindhoven, Holland, as part of a package of hydraulics works that was awarded in association with local firm McRaes Global Engineering.

The rams are double acting, which means they will be used to control both the lifting and closing of the bascule. Cylinders will extend to raise the bascule and will retract to lower it. The rams will be controlled with valving in the pier and powered by a power unit on the western embankment.

When raised, the uppermost point of the bascule will tower 40 metres above average high tide.

Whangarei District Council Infrastructure and Services Manager Simon Weston said the powerful rams have a normal operating force of 80 tonnes, but they will be able to raise the 400-tonne bascule section because 140 tonnes of counterweight in the end of the J-beams helps gravity do some of the work.

“We are making good progress and looking forward to the opening ceremony in July,” said Mr Weston.

“This month the last bridge beams and precast concrete deck sections will be installed on the bridge, along with bridge handrails and the concrete footpath on the Pohe Island side of bridge. The Okara Drive roundabout will be completed and work will continue on the Pohe Island road, drainage works at the Riverside Drive roundabout, and electrical installation.”

When the system is up and running it will work this way

To ensure smooth traffic flows during peak hours the bridge will be closed (the bascule will be down) between 7.15am and 8:45am and between 4pm and 5.30pm.

The bascule will only be raised outside peak hours, and only at the request of skippers who will ring or radio a request to the bascule operator.

On average there are about six vessel movements each day through the area spanned by the bridge, which will require the bascule section to lift. Most vessels that don’t have masts will be able to pass under the bridge when the bascule is down, because there will be 7.5 metres between the average high tide and the underside of the bascule section.

When the bascule is being raised

When the bascule is being raised the situation will be managed in a way similar to a railway crossing.

Signs on Riverside Drive, Port Road and Okara Drive will warn drivers that the bascule is lifting, giving them the options of waiting for the bascule to open and close or using a different route.

On the bridge an alarm will sound, lights will flash and a barrier will drop to stop cars and pedestrians from going onto the bascule.

The bascule will rise (this takes about 90 seconds) the vessels will sail through (expected to take one or two minutes depending on the number of vessels and how fast they are moving) then it will take another 90 seconds for the bascule to come down. The total wait time is expected to be five to six minutes.

The barriers will then rise and traffic can flow through.
ends

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

 

Water, Pests, Erosion...: Commissioner Releases Mixed Report Card On Environment

The Parliamentary Commissioner for the Environment has released a mixed report card in her assessment of the state of New Zealand’s environment. “We are lucky to live in an exceptionally beautiful country, but we have some big issues to face up to” said Dr Jan Wright. More>>

ALSO:

Education: Private Schools Beneficiaries Of Extra Cash

“Not only did this year’s Budget freeze operational funding for state schools, but 86 per cent of secondary school principals say they don’t get enough funding, and the demand for school donations from parents is rising at 10 times the rate of inflation... Now we’ve got Hekia Parata proposing more cash for private schools." More>>

ALSO:

Shop Hours Bill Second Reading: Government Blocks Easter Trading Petition

The union representing retail workers is warning that the Government is out of touch with working people after passing the second reading of the Shop Trading Hours Amendment Bill, a law handing local authorities the power to permit trading on Easter Sunday. More>>

ALSO:

Gordon Campbell: On The Shewan Inquiry Into Our Tax Haven Rules

Like the political equivalent of lithium, Prime Minister John Key is routinely administered to dull any politically dangerous mood swings amidst the general public... More>>

ALSO:

Law Commission: Review Of Search And Surveillance Act Begins

“For example, the Act was drafted before cloud-based storage of data was commonplace. In the light of these and other developments, the Commission will be examining whether the investigative powers in the Act are sufficient for law enforcement purposes. We will also consider whether the safeguards that surround those processes are adequate.” More>>

ALSO:

Houses, Campers And Cops: LGNZ Media Briefing

At their quarterly media briefing today Local Government New Zealand addressed areas where local authorities are feeling pressure and outlined their approach for the upcoming local body elections in September-October. More>>

ALSO:

17 Year Sentences In Baby Moko Case: Attorney General On Plea Bargain

“The Crown’s decisions in this case, including the decision to accept the manslaughter pleas, were motivated by the need to secure convictions for this horrendous killing and to avoid the significant risk that either of the defendants could escape such a conviction because of evidential issues.” More>>

ALSO:

As Govt Cuts Lobby Anti-Smoking Group Funds: On The Nation - Plain Packaging Debate

Imperial Tobacco leaves open possibility of law suit against New Zealand government if plain packaging is introduced, as planned. Says it’s a “last resort” but “of course we will defend the right to use our brands”. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news