[U/C] M2 North-South Motorway

[Saltwater]

I think the design is great, a lane is removed northbound which becomes the flyover onto Anzac Highway for CBD traffic, another lane is then added for South Road traffic heading northbound off the surface road and into onto the motorway, so it's three lanes each direction through the Gallipoli Tunnel, there is no merging so traffic keeps moving. The risk if the flyover isn't there is traffic queuing at lights which then backs up into the tunnel. And the tram line is retained with no impact.

[rev]

Good Lord, that does not look pretty. It looks overengineered.

That bridge to Anzac Highway the CBD doesn't need to be there because I thought the main purpose of the freeway was for freight and moving it along the corridor. This bridge will only further encourage the car commute to the city.

One of the benefits is increased freight efficiency. It isn't the main purpose, media & political spin aside.
Another benefit is more efficient traffic flow overall, and yes that includes around these parts the much hated personal car.
If people can move across the city in a quicker smoother manner, they will, which will relieve traffic congestion on nearby arterial roads. For example the north south flow of traffic at the Torrens/South roads intersection has reduced since the motorway below opened.

Should more be invested in pt, absolutely. But this isn't a pt project, so to complain that this overpass would be good if it was for buses only like someone else did is ridiculous. It would change the scope of this project. If you have a bus only overpass, how would the buses get their, efficiently, or trying to navigate through other traffic? Would you then need to allocate lanes for buses throughout this corridor? There's already enough major roads with buses stopping at bus stops along the way. We don't need the one and only major north-south corridor being redeveloped into a non-stop corridor, being clogged up with buses. That's what the surface road aka South Road has been kept for in part, and is in parts being used for ie the surface road along the T2T section of the corridor.

And as Saltwater pointed out, it prevents traffic building up into the tunnel at a stand still.
South Rd/Anzac Hwy is a major intersection. If the overpass helps create a smoother more efficient flow of traffic then its a positive.
In its current form there's three lanes that go right onto Anzac Hwy, it builds up significantly in peak times. That would get worse with a completed motorway corridor.
It also removes the need to wait at 2 sets of traffic lights to get onto Anzac Hwy.

There's also some light industrial/warehouse type area in the vicinity, a major private hospital, the states major interstate rail terminal, one of the major if not the main mail processing facility, and a short distance away the states major hospital.

[AG]

Looks like the ramps have been laid out to avoid the situation that arises at other notorious motorway bottlenecks where traffic moving from the left lanes to the right lanes conflicts with traffic moving from the right lanes to the left lanes (like the Inner City Bypass in Brisbane or the Mitchell Freeway/Graham Farmer Freeway interchange in Perth).

[Jaymz]

Some info about compulsory acquisition from todays online version of The Advertiser....

What to expect if your house is in the Torrens to Darlington firing line
So, you’ve been told the government needs to bulldoze your home for roadworks … Here’s what to expect, and what you’re entitled to.

Gabriel Polychronis
October 24, 2021 - 12:58PM
SA News

Property owners in the firing line of the Torrens to Darlington project have been told the acquisition process doesn’t have to be a “David and Goliath” battle.

Transport Minister Corey Wingard has made the plea as the state government ramps up work on the final stage of the North South Corridor, which will claim nearly 400 properties.

More than 100 Glandore homeowners received letters from the transport department last month, alerting them their homes could be bulldozed for the project.

“While large, once-in-a-generation projects like the $9.9bn Torrens to Darlington project will benefit many thousands of South Australians, they also have a very personal impact on those whose properties need to be acquired,” Mr Wingard said.

“What is avoidable is the David and Goliath battle that often ensues, which can be stressful and frustrating for individuals, families and businesses.”

The transport department has publicly released its 10-step process to acquiring properties, telling owners exactly what to expect if they are in the project’s crosshairs.

Mr Wingard said changes made in 2019 have “empowered” affected land owners, providing them with an upfront payment of $10,000 towards legal advice.

Owner-occupiers can also get an additional “solatium” payments of up to $50,000 for the burden and emotional stress of having their homes taken, on top of the total sum paid for the land.

“This has effectively given land owners more resources and opportunities to negotiate to ensure they’re given a fair and reasonable deal,” Mr Wingard said.

Mr Wingard moved to clarify “misinformation” that he said was circulating in the South Road community around settlement time frames.

“Some have been incorrectly told they will have as little as three months to move out, which is certainly not the case,” he said.

“For a large project with long lead times, like the Torrens to Darlington, in most cases this is likely to be at least a year and for some owners up to three years, unless they want to settle more quickly.”

Mr Wingard on Sunday revealed detailed plans to build an overpass connecting the Torrens to Darlington motorway directly to Anzac Highway.

[[Shuz]]

This is grossly overengineered and absolutely not what I think the vast majority of people had in mind when it came to developing this section of the NS Motorway.

I've always thought that there needed to be some future planning with the East West link between the SE Freeway and the NS Motorway. The massive vacant block of land near Castle Plaza at the intersection of Edward Street and South Road is the perfect spot for a circular trumpet interchange linking the southern tunnel of the NS Motorway to the East West Tunnel to the ground level stretch between there and Gallipoli Underpass.

The Emerson Bridge just needed to be duplicated on the eastern side, acquisition of properties facing south road on on easy side between Cross Road and Edward Street - widen the corridor for 2 lanes northbound, 3x3 lanes Motorway and 2 lanes southbound with entry and exits at Edward and Cross Roads. The rail line should go in a trench.

After the Emerson Bridge, the Motorway would deviate slightly, taking out the western side of properties facing South Road, just after Glandore Oval. The Anzac Highway interchange should have scissor onbound and offbound slip lanes before and after the intersection so as to avoid conflicting traffic movements entering and exiting the motorway.

Back to the drawing board, DIT.

[aceman]

Good Lord, that does not look pretty. It looks overengineered.

That bridge to Anzac Highway the CBD doesn't need to be there because I thought the main purpose of the freeway was for freight and moving it along the corridor. This bridge will only further encourage the car commute to the city.

the main purpose of this freeway is not freight. it's for everyone to use including cars and buses. this is evident when observing the vehicle types currently using the completed sections both north and south of the D2T. by far the majority of vehicles are cars not freight. the ramp to anzac highway northbound is most likely to eliminate a bottleneck onto the motorway itself caused by vehicles exiting the motorway and trying to turn right onto anzac highway at the existing set of traffic lights.

[ChillyPhilly]

The main reason for the Motorway very much was for freight and improving community health and road safety by getting trucks off local roads.

Just because commuter traffic too lazy to use public transport (however poor it is) will become the main use, doesn't mean the project should actively bend over backwards for it.

[Archer]

Is it just me or is this section looking like it is going to live up to the "Roller Coaster" nickname much of the rest of the Corridor is earning?

Looking at those drawings, it looks like the motorway emerges from the tunnels and returns to grade, or very close to it, before diving again into the Gallipoli Underpass and back to grade again. All in the Space of what looks to be about 800m. Very similar to the Darlington area past Ayliffes Road & Tonsley.

Is this purely a Cost thing or is there some other reasoning for the "Roller Coaster" Effect?

As for the connection to Anzac Highway, It would be good to see more detail, but it seems a reasonable solution to me, doing as much for commuters as it does to help ensure freight can remain as free flowing as possible through the area. Of course it won't stop the possibility of traffic backing up from the leader Street traffic lights, but hopefully that's far enough up the road to minimise the effect on the motor way.

[SRW]

It's a lot more than I thought this interchange would require. The rationale of preventing cars queuing back into the tunnel makes sense, though I'd like to see the modelling that supports this as the solution.

[NTRabbit]

The main reason for the Motorway very much was for freight and improving community health and road safety by getting trucks off local roads.

Just because commuter traffic too lazy to use public transport (however poor it is) will become the main use, doesn't mean the project should actively bend over backwards for it.

Everything south of the Northern Connector has always been about commuter traffic to and from the CBD, there's never been enough freight from the south to justify freeway construction alone - the two freight corridors have always been the Sturt Highway and the South Eastern Freeway.

[muzzamo]

Video flythrough on Stephen Marshalls' Facebook page

https://www.facebook.com/watch/?v=556706735628332

[aceman]

The main reason for the Motorway very much was for freight and improving community health and road safety by getting trucks off local roads.

Just because commuter traffic too lazy to use public transport (however poor it is) will become the main use, doesn't mean the project should actively bend over backwards for it.

Everything south of the Northern Connector has always been about commuter traffic to and from the CBD, there's never been enough freight from the south to justify freeway construction alone - the two freight corridors have always been the Sturt Highway and the South Eastern Freeway.

exactly, if you stand on the seacombe rd bridge for example and observe the total number of vehicles on the motorway only a very small percentage could even be classified as freight. a lot of the trucks are service vehicles more so than freight vehicles.

[Nort]

I don't get the comments that this seems over engineered. If anything it seems quite restrained in the impact on the existing intersection and Anzac highway considering the need for traffic coming from the tunnel to keep moving without suddenly hitting lights and creating a potential backup

[Brucetiki]

The main reason for the Motorway very much was for freight and improving community health and road safety by getting trucks off local roads.

Just because commuter traffic too lazy to use public transport (however poor it is) will become the main use, doesn't mean the project should actively bend over backwards for it.

So you bag commuters for being lazy, yet admit public transport is poor, resulting in people driving...

[A-Town]

The main reason for the Motorway very much was for freight and improving community health and road safety by getting trucks off local roads.

Just because commuter traffic too lazy to use public transport (however poor it is) will become the main use, doesn't mean the project should actively bend over backwards for it.

Everything south of the Northern Connector has always been about commuter traffic to and from the CBD, there's never been enough freight from the south to justify freeway construction alone - the two freight corridors have always been the Sturt Highway and the South Eastern Freeway.

And this is why linking the South Eastern Freeway to the North-South Motorway is so important.