[U/C] North-South Motorway

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SBD
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[U/C] Re: North-South Motorway

#3391 Post by SBD » Sun Feb 10, 2019 8:38 am

SA Opposition transport spokesman Tom Koutsantonis said that timeline was set to be “blown out of the water”, and state Liberals had failed to secure the cash to deliver the build.
Perhaps if that had bothered Mr Koutsantonis while he was in office, the plans and preliminary works would have been further developed before we voted him out of office. It wasn't going to be finished in the ten-year timeline even if we'd all voted Labor.

The remaining sections were always going to be hard, and they will have the biggest impacts during and after construction. Whatever solution is reached will need access to the city and access to the South Eastern Freeway somewhere along the corridor.

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[U/C] Re: North-South Motorway

#3392 Post by Waewick » Sun Feb 10, 2019 8:51 am

I just don't get what pollies think they are getting out of those sorts of rubbish comments.

Both sides are as bad as each other.

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[U/C] Re: North-South Motorway

#3393 Post by mawsonguy » Sun Feb 10, 2019 9:11 am

What's unclear from today's announcement is how they intend to get city and western traffic into and out of the tunnels. City traffic going south could enter at James Gondon Drive but otherwise there is still going to have to be some property acquisitions for any such "interchanges".

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[U/C] Re: North-South Motorway

#3394 Post by rogue » Sun Feb 10, 2019 9:35 am

Access to the nw section of the city from the Noth South Motorway has already been completed at Port Rd

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[U/C] Re: North-South Motorway

#3395 Post by Eurostar » Sun Feb 10, 2019 10:16 am

If the whole idea of this non stop roads are to move trucks why are we overbuilding it? It only needs to be dual lane tunnel/trench/viaduct restricted to trucks only.

And besides many trucks I have seen use Portrush Road to get to and from port/freeway. A simple tunnel for trucks only between Marden and Glen Osmond will allow trucks to bypass the busy section of Portrush Road

As for Grand Junction Road the main intersections that need to be fixed is at Gepps Cross.

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[U/C] Re: North-South Motorway

#3396 Post by Nort » Sun Feb 10, 2019 12:10 pm

Eurostar wrote:
Sun Feb 10, 2019 10:16 am
If the whole idea of this non stop roads are to move trucks why are we overbuilding it? It only needs to be dual lane tunnel/trench/viaduct restricted to trucks only.

And besides many trucks I have seen use Portrush Road to get to and from port/freeway. A simple tunnel for trucks only between Marden and Glen Osmond will allow trucks to bypass the busy section of Portrush Road

As for Grand Junction Road the main intersections that need to be fixed is at Gepps Cross.
Where did you get the idea it's only for trucks from?

The superway was built the way it is (and built as one of the first parts) because it's a section of South Road with heavy industrial use that was in risk of becoming a bottleneck, but there is no indication that the overall plan is just for trucks.

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[U/C] Re: North-South Motorway

#3397 Post by ml69 » Sun Feb 10, 2019 1:31 pm

mawsonguy wrote:
Sun Feb 10, 2019 9:11 am
What's unclear from today's announcement is how they intend to get city and western traffic into and out of the tunnels. City traffic going south could enter at James Gondon Drive but otherwise there is still going to have to be some property acquisitions for any such "interchanges".
If they go with the twin-tunnel hybrid option, CBD traffic going south will need to enter the motorway at the Anzac Hwy intersection when the tunnel re-surfaces.

It would appear the entry portals to the tunnels with this hybrid option could be at Port Rd, Anzac Hwy and Cross Rd.

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[U/C] Re: North-South Motorway

#3398 Post by Eurostar » Sun Feb 10, 2019 1:44 pm

No more trenches!, I know they're cheaper than tunnels but by the time you have service roads it requires a large width.

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[U/C] Re: North-South Motorway

#3399 Post by Westside » Sun Feb 10, 2019 4:51 pm

CBD rail tunnel first. Please and thank you.

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[U/C] Re: North-South Motorway

#3400 Post by Hooligan » Sun Feb 10, 2019 5:37 pm

ml69 wrote:
Sun Feb 10, 2019 1:31 pm

It would appear the entry portals to the tunnels with this hybrid option could be at Port Rd, Anzac Hwy and Cross Rd.
Surely there would need to be an interchange at SDB Drive for airport access?

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[U/C] Re: North-South Motorway

#3401 Post by aceman » Sun Feb 10, 2019 8:45 pm

do people actually still believe that this motorway is being built for trucks?? please tell me this is not the case.

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[U/C] Re: North-South Motorway

#3402 Post by SBD » Sun Feb 10, 2019 9:36 pm

Eurostar wrote:
Sun Feb 10, 2019 1:44 pm
No more trenches!, I know they're cheaper than tunnels but by the time you have service roads it requires a large width.
https://www.google.com.au/maps/@43.7667 ... !1e3?hl=en shows the Ontario 401 freeway near Toronto, a total of 14 lanes in 4 carriageways. At its widest point it is 18 lanes. The inner freeway has only a few exits, mostly only to the outer freeway. It's all at ground level. T2T is a much simpler version of these Local-express lanes.

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[U/C] Re: North-South Motorway

#3403 Post by Stryker » Sun Feb 10, 2019 9:36 pm

arki wrote:
State Government seriously considers multi-billion dollar twin tunnel solution for Adelaide’s traffic woes
Daniel Wills, State Political Editor, Sunday Mail (SA)
Image
Image
Two separate traffic tunnels bored beneath South Rd are being seriously considered by the State Government as the multibillion-dollar fix for the city’s major motorway.

The Sunday Mail can reveal designs for the possible engineering solution, which it is hoped could avoid the need for huge expense and disruption by buying up properties on the surface.

The so-called “hybrid tunnel” solution would feature one underground stretch between the River Torrens and Anzac Hwy, where traffic would return to using existing infrastructure including under and overpasses, before going below ground again from Edward St to Tonsley.

The Government is also considering one super-tunnel from the completed Torrens to Torrens project to the Darlington Upgrade now underway, and a surface-level option.

However, indicative timelines provided by the Department of Planning, Transport and Infrastructure suggest major construction may not be finished for another decade.

Transport Minister Stephan Knoll said a decision on the best path forward would be taken this year, and the Government would chose the best option rather than the cheapest.

He said a tunnel could cost more, but create less disruption for residents and businesses.

“When we were looking at a long tunnel, it became apparent that a hybrid tunnel could deliver a better balance of traffic flows,” Mr Knoll said.

“There was a suggestion that other arterial roads could have all their traffic sucked up into South Rd, creating more bottlenecks.

“We need to distribute the traffic well, and the hybrid tunnel is a possible solution.”


Designers also believe the twin tunnels option will allow more people to get on and off the rebuilt South Rd, rather than it being commonly used as an express route for 10km.

Mr Knoll said the Government was “very keen in the decision making to factor in what this is going to mean for businesses and communities along that corridor”.

The Government will receive a final business case in the coming months.

It has not released cost estimates, but the price tag is expected to total several billion dollars.

The Government last year committed to the Regency Rd to Pym St upgrade, which will complete a 47km non-stop free flow roadway between Gawler and the River Torrens.

The area between Thebarton and Oaklands Park is the last piece of the puzzle in completing a non-stop South Rd and follows major builds including the northern and southern expressways.

A South Rd planning study released by the Federal Government in 2015 estimated a cost of $596 million for land purchases alone before heavy construction could start on upgrading the road from Gallipoli Underpass to Darlington.

A further $375 million was estimated to buy land north of Anzac Hwy so work could start to reach the Torrens to Torrens upgrade.


A concept image of the River Torrens to Darlington Project.

A concept image of the River Torrens to Darlington Project.
Federal Cities, Urban Infrastructure and Population Minister Alan Tudge said finishing a non-stop South Rd from Gawler to Old Noarlunga would “make a huge difference” for Adelaide.

“It’s been truly fantastic to see the Marshall Liberal Government working hard on the business cases for the remaining stages, which will be the most complex,” he said.

“They are progressing well so we can get on with delivering the final section and get people home sooner and safer.”

Former prime minister Tony Abbott in 2013 said he wanted to finish South Rd in a decade.

SA Opposition transport spokesman Tom Koutsantonis said that timeline was set to be “blown out of the water”, and state Liberals had failed to secure the cash to deliver the build.

“South Australians just can’t trust what the Commonwealth promises on South Rd,” he said.

“We were told, when Premier Steven Marshall was elected, that he’d have a better relationship with the Federal Government. That’s turned out to be very much a one-way relationship.

“Whether it’s the River Murray or South Rd, it’s being done on the Commonwealth’s terms.”

Mr Koutsantonis also raised concerns about how the state component of the build would be funded, given Mr Marshall’s first Budget included a significant increase in SA’s forecast debt.

Image
Jeepers, I really hope that picture of a double lane tunnel is just an indicative image because if they’re not going to continue with 3 lanes (as like the T2T, Superway and Northern Connector) it’s just going to be a bottle neck nightmare in there. Have they not learnt anything from Sydney’s M5 lack of vision double lane tunnels or their M2 Motorway that needed an extra lane retrofitted to widen the motorway?


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[U/C] Re: North-South Motorway

#3404 Post by Nort » Sun Feb 10, 2019 10:05 pm

Westside wrote:
Sun Feb 10, 2019 4:51 pm
CBD rail tunnel first. Please and thank you.
I'm a big fan of the idea of a CBD rail tunnel, but apart from containing the word tunnel they are entirely different projects with entirely different purposes.

To be honest a South Road tunnel is probably the best thing that could happen in building momentum for a rail tunnel. It would get us the equipment and expertise needed locally to make the project happen and coming as it would with the "completion" of South Road it would be the perfect timing for large public transport infrastructure works.

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[U/C] Re: North-South Motorway

#3405 Post by mawsonguy » Sun Feb 10, 2019 11:02 pm

Stryker wrote:
Sun Feb 10, 2019 9:36 pm
Jeepers, I really hope that picture of a double lane tunnel is just an indicative image because if they’re not going to continue with 3 lanes (as like the T2T, Superway and Northern Connector) it’s just going to be a bottle neck nightmare in there. Have they not learnt anything from Sydney’s M5 lack of vision double lane tunnels or their M2 Motorway that needed an extra lane retrofitted to widen the motorway?
And I hope that the entry ramp is more than one lane. Only need a truck to breakdown or a moinor rear ender and the whole entry is blocked.

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