Brynderwyn Hills out of action again.

Forums › Off topic › Brynderwyn Hills out of action again.

tweake

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#315476 20-Jul-2024 11:51

i was wondering why there was so much traffic this morning. Brynderwyn Hills has multiple slips from last nights rain medium rain. plus one main detour also has a slip.

they recon the big repair they didn't would not last 10 years, well it didn't last one.

thanks labor for cancelling the Brynderwyn Hill bypass, which was one of the first things they did when they got into govt.

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#3261817 20-Jul-2024 13:48

https://www.stuff.co.nz/nz-news/350349613/slips-close-sh1-brynderwyns

https://www.rnz.co.nz/news/national/522645/slips-close-state-highway-1-at-brynderwyn-hills

" has been closed after heavy rain caused some slips"

got to love media bs.

there was a little bit of heavy rain overnight. one very small bit went to over, about 50mm according to the rain radar at the time. but it was so small you could barely see it on the rain radar. it didn't last very long.

if it couldn't handle that little bit of rain, we have BIG problems.

Linux

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#3261820 20-Jul-2024 13:57

This is a national joke! Closed for months and one rain down pour and closed

KiwiSurfer

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#3261831 20-Jul-2024 14:49

Has the repair been finished? I don't think as I recall reading that the reopened road wasn't fully open with all lanes etc, because was still plenty more work to do. Basically they had managed to get a the minimal amount of work done to reopen with limited lanes and speed limits etc -- rather than keeping it closed until the final repairs were completed. If this is the case then I don't feel any critisim is warranted. The slips may well have been in areas where work had not yet been done etc.

Labour cancelled the bypass, National cancelled the ferry project, cancelled light rail, cancelled the Auckland fuel tax which led to the cancellation of local road improvements. Both seem to make their fair share of short-sighted transport cancellations.

Linux

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#3261832 20-Jul-2024 14:58

They were fully open as I understand. Not driven over them in a while!

tweake

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#3261835 20-Jul-2024 15:02

afaik the bulk of the work was complete. the restricted lanes was so they could clean up small slips and work with the road still open. but it looks like its slipped a lot more and went across the road.

its unstable soil, its always been a problem and its been pretty much ignored with band aid fixes.

yeah even national hasn't included it in its roading program. this is the result of ignoring major problems and spending the money fixing stuff in the middle of nowhere.

gzt

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#3261838 20-Jul-2024 15:31

Linux: This is a national joke! Closed for months and one rain down pour and closed

Probably not severe this time and more a precautionary closure until the weather settles. Looks that way in the pictures.

https://www.nzherald.co.nz/nz/state-hhighway-1-north-of-auckland-at-brynderwyn-hills-closed-by-slip/4JTOB2MSJRGPVO6HL6OSWRQWXU/

Gurezaemon

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#3261839 20-Jul-2024 15:36

I came north through that way a couple of hours ago, and was detoured via SH12 and then a VERY windy dirt road. Half way along the dirt road, there were several fire engines, lots of police cars, an ambulance, and the rescue helicopter, as someone had driven down a bank into a swollen river :(

And while there may not have been that much rain in millimetre terms, there is surface flooding all over the place up here, which indicates it was pretty intense, rather than long lasted. The work on the Brynderwyns was only finished a few weeks back, and already the hill is starting to come down again.

The situation is getting stupid. As I understand it, the population of people who live in Northland and who get cut off whenever the Brynderwyns or Dome Valley get blocked (any decent rain storm) is similar to the population of Wellington city, and it's growing at a furious rate as people who are OK commuting to Auckland move north. The lack of foresight by all politicians is very frustrating.

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mudguard

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#3261840 20-Jul-2024 15:36

Where was the proposed bypass supposed to go?

mudguard

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#3261842 20-Jul-2024 15:42

Gurezaemon:

The situation is getting stupid. As I understand it, the population of people who live in Northland and who get cut off whenever the Brynderwyns or Dome Valley get blocked (any decent rain storm) is similar to the population of Wellington city, and it's growing at a furious rate as people who are OK commuting to Auckland move north. The lack of foresight by all politicians is very frustrating.

Surely the portion of people doing that commute is minimal? That's a 300k round trip.

tweake

2402 posts

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#3261847 20-Jul-2024 16:04

Gurezaemon:

I came north through that way a couple of hours ago, and was detoured via SH12 and then a VERY windy dirt road. Half way along the dirt road, there were several fire engines, lots of police cars, an ambulance, and the rescue helicopter, as someone had driven down a bank into a swollen river :(

thats one of the back roads. they are not meant to put bypass traffic down it, for obvious reasons. there is multiple accidents because its narrow and people tend to not give way. in same cases traffic has to back up to allow them through.

funny enough thats where the proposed bypass would roughly go. basically put a bridge over that river and bypass that road. the reason being is thats a low spot that goes around the hill.

tweake

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#3261852 20-Jul-2024 16:19

mudguard:

Gurezaemon:

The situation is getting stupid. As I understand it, the population of people who live in Northland and who get cut off whenever the Brynderwyns or Dome Valley get blocked (any decent rain storm) is similar to the population of Wellington city, and it's growing at a furious rate as people who are OK commuting to Auckland move north. The lack of foresight by all politicians is very frustrating.

Surely the portion of people doing that commute is minimal? That's a 300k round trip.

funny enough the traffic volumes that go over the brynderwyn's is not huge compared to either side of it. a lot of traffic goes through mangawhai. but with it closed and you see who much gets crammed through mangawhai, it gives you an idea of the issue. its gets absolutely packed.

plus the bypass roads are not good, trucks are either crawling slow or crashing.

for trucks to go the long way around takes 2+ hours to do what is normally 20 minute drive. especially if they are only going to the port which is just over the hill.

one of the issues is that the hill doesn't take a lot of traffic, but a lot of that is commercial traffic. so the economy impacts are huge for the vehicle count. but because its such a bad area to build roads, its cost to benefit is low, which means its always bumped off the list and places with no traffic but cheap to build get priority. hence why we are 30-40 years behind.

tweake

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#3261856 20-Jul-2024 16:25

there is also another issue in that there is a spot just before the hill that floods often, and also has a lot of accidents.

quite common for it to be closed there. however that cuts off SH12 as well. plus the side roads are not truck friendly. last time they tried putting bypass traffic through those roads, they all had multple accidents on them and they closed the roads. that meant the entire of northland was cut off completely. SH1 became a parking lot for the trucks.

the highway bypass national put forward years ago would actually bypass that spot as well. so it would get rid of multiple problems at once.

edit: https://www.nzta.govt.nz/assets/projects/whangarei-to-te-hana/pmh2th-aerial-map.pdf map of bypass. west is top of pic.

ezbee

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#3261867 20-Jul-2024 16:45

Suppose its now up to those dedicated to cuts to fund the work?

On the subject of heavy trucks that give any road a pounding.

We don't like rail, so there will not be any rail upgrades for the corridor.
So it gets more truck traffic.

Did not the Auckland Mayor bite on some Whittaker's and say something about a bias to trucking.

tweake

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#3261870 20-Jul-2024 16:59

i don't know what the answer is.

this is a problem thats many many decades in the making by their own actions.

auckland is sweating a bit because one of the landfills is due to close and they need the proposed landfill up in dome valley to go ahead. but that needs roading to get that amount of trucks up there and it would turn existing roading to crap. hence the need for the dome valley motorway which would have and exit next to the new landfill.

there is also a proposed waste to energy plant to go in near the by the Brynderwyn hills, which of course also need highly reliable roading. they are claiming it might take all of whangerai's rubbish and possible some of aucklands as well.

so there is a big need for the Dome valley motorway, and the Brynderwyn bypass to be done like yesterday.

neb

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#3261880 20-Jul-2024 17:52

gzt:
Linux: This is a national joke! Closed for months and one rain down pour and closed

Probably not severe this time and more a precautionary closure until the weather settles. Looks that way in the pictures.

https://www.nzherald.co.nz/nz/state-hhighway-1-north-of-auckland-at-brynderwyn-hills-closed-by-slip/4JTOB2MSJRGPVO6HL6OSWRQWXU/

Who would have thought that an unsupported clay slope at around twice the angle of repose for clay would slip when it gets waterlogged?

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