Transmission Gully progress towards opening

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8253 posts

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#2907834 28-Apr-2022 10:35

MikeAqua:

TG will move the bottle neck further North,

On Big Holiday weekends definitely,

But the amount of regular PM peak traffic going north of Otaki is a minority,

with pp2O being completed this year (they are currently putting up wire ropes and signs), the travel experience for those on the Coast will be hugely better.

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MikeAqua

7769 posts

Uber Geek

#2907845 28-Apr-2022 11:26

wellygary:

with pp2O being completed this year (they are currently putting up wire ropes and signs), the travel experience for those on the Coast will be hugely better.

I didn't realise that was progressing so fast. The latest update on the website says paving will be complete by August 2022.

Mike

wellygary

8253 posts

Uber Geek

#2907860 28-Apr-2022 11:52

MikeAqua:

wellygary:

with pp2O being completed this year (they are currently putting up wire ropes and signs), the travel experience for those on the Coast will be hugely better.

I didn't realise that was progressing so fast. The latest update on the website says paving will be complete by August 2022.

Wires are quite clear in these shots taken just before Easter... I can't see how its going to take another 4 months

2022-04-19_Coote_PP2O_1021 by Peka Peka to Ōtaki Expressway, on Flickr

A full set the photos are here

https://www.flickr.com/photos/pp2o/with/52018816603/

floydbloke

3501 posts

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#2907865 28-Apr-2022 12:03

wellygary:

...

Wires are quite clear in these shots taken just before Easter... I can't see how its going to take another 4 months

...

This is a Waka Kotahi undertaking, they'll find a way.😝

Thanks for explaining "plethora".

It means a lot.

MikeAqua

7769 posts

Uber Geek

#2907866 28-Apr-2022 12:05

wellygary:

Wires are quite clear in these shots taken just before Easter... I can't see how its going to take another 4 months

I guess they were just being conservative. This is the March 22 Update Peka Peka to Ōtaki Expressway (createsend.com) - scroll to bottom. Maybe the April update will be more bullish.

Mike

nickb800

2715 posts

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#2907875 28-Apr-2022 12:29

wellygary:

Wires are quite clear in these shots taken just before Easter... I can't see how its going to take another 4 months

They are working their way up the road - yes the Southern section is nearly completely finished, but further north some sections still need to be sealed (and then barriers installed).

DjShadow

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#2907886 28-Apr-2022 13:21

Hopefully the consent/safety checks don't take as long!

floydbloke

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#2907906 28-Apr-2022 14:03

DjShadow:

Hopefully the consent/safety checks don't take as long!

I'm no expert on this but I don't recall seeing these as a cause for delays in previous motorway projects ( although I didn't follow those closely), and that these delays on TG were a result of the PPP contract. Maybe with this traditional approach for PP2O( NZTA ownership, managment and project management from day one with the actual physical design and construction work subcontracted??) it means these checks and consents get done in parallel. Maybe someone more in the know can shed more light.

Curiosity steered me to the FAQ and I spotted this

Why have you changed the surface from chipseal to OGPA (Open Graded Porous Asphalt)?

Waka Kotahi has confirmed that a change in surface is required for the expressway.

Recently updated traffic modelling for the expressway shows that an asphaltic surface, rather than chip seal, is required to ensure the expressway can withstand the increased traffic volumes and perform at the level required through-out its lifetime.

Traffic modelling for the expressway indicates that traffic volumes just north of Peka Peka are currently at approximately 20,000 vehicles per day. By 2031 this could grow by at least 10% to 15% per day.

Traffic modelling takes into consideration a wide range of data and information including traffic growth (both cars and trucks), potential land development and associated traffic generation and mode choice (i.e. public transport vs vehicle use).

The benefits of OGPA are:

A smoother surface for drivers
Ability to drain water from the road surface during heavy rain
Ability to withstand heavier traffic volumes
Lower operational noise.

That to me suggests that TG should have been asphalt all the way as well but we're stuck with shitty chispeal once again because of that poxy PPP.

PP2O should be a lovely drive though.

Thanks for explaining "plethora".

It means a lot.

Jase2985

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#2907908 28-Apr-2022 14:10

Any new motorway/expressway should be Open Graded Porous Asphalt. chip seal should not be an option.

wratterus

1687 posts

Uber Geek

#2907915 28-Apr-2022 14:37

Got to drive Transmission Gully last weekend. It's certainly very impressive. Big old haul up the Kapiti side.

We thought the surface was already pretty rough - it seemed worse southbound but I might have been imaging that. Won't be too long until there are patches all over it no doubt. Wish we could sort out a proper road surface in NZ. Surely it can't be that hard.

Bring on the next section opening.

Edit - absolutely no loose chip though.

itxtme

2102 posts

Uber Geek

#2907916 28-Apr-2022 14:37

Jase2985:

Any new motorway/expressway should be Open Graded Porous Asphalt. chip seal should not be an option.

Why do I keep hearing this??? It costs 10 times as much, is less safe technically, with worse grip. If this is the way people feel be ready to fork out 10x more taxes covered by fuel and vehicle registration or have 10x less new road infrastructure. The typography of NZ is not suited for Porous Asphalt in many situations. We are a generally large country with a small population to pay for all of this , these are just reality's..

Jase2985

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#2907917 28-Apr-2022 14:41

its a generally straight piece of road with high speed limits.

Its also 10x nicer to drive on that chipseal, lasts longer etc etc.

martyyn

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#2907918 28-Apr-2022 14:41

Personally I'm sick of paying for chip seal in tyres that get ripped to shreds, windscreens and the paint work on my cars.

My main motorway car has more holes than swiss cheese.

floydbloke

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#2946937 27-Jul-2022 14:20

And.......it's broken!

Thanks for explaining "plethora".

It means a lot.

DjShadow

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#2946940 27-Jul-2022 14:27

I think the weather has taken its toll on all of SH1, drove south along it from the Waikato yesterday and some potholes were big enough to do some severe damage if one were to hit one

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