[COM] M2 Northern Connector | 15.5km | $867m

[Norman]

I'm still waiting to see a detailed map of how the shared cycling pedestrian pathway will cross over or under the junction with Salisbury Hwy and Port River Expressway, to connect between South Road and the path that follows the Northern Connector.

At some point in the future I hope there is also an east-west pathway constructed, to get bikes off the Port River Expressway.

Have you tried to contact the project team about it?

[ralmin]

Have you tried to contact the project team about it?

A year ago I did and got the reply:

The design for the Shared Use Path has not yet been finalised – the drawings noted below are from the reference design that is currently being further developed.

Further information regarding the path will be uploaded on to the website as it becomes available

[muzzamo]

New video - https://www.facebook.com/DPTISA/videos/ ... 089748160/

[Eurostar]

It looks like Bolivar Road/Port Wakefield Highway intersection will move slightly south

[Goodsy]

It looks like Bolivar Road/Port Wakefield Highway intersection will move slightly south

It will

[[Shuz]]

That merge is going to get real ugly where the northbound PWR left onto the NC onramp conflicts with southbound PWR and eastbound Bolivar Road traffic wanting to go southbound onto the NC. There's barely 50-100m of conflicting crossover.

[Goodsy]

That merge is going to get real ugly where the northbound PWR left onto the NC onramp conflicts with southbound PWR and eastbound Bolivar Road traffic wanting to go southbound onto the NC. There's barely 50-100m of conflicting crossover.

I can't imagine they're expecting much traffic to turn left there from PWR

[Mr Messy]

Alternatively just use a signallised left turn

[rev]

That merge is going to get real ugly where the northbound PWR left onto the NC onramp conflicts with southbound PWR and eastbound Bolivar Road traffic wanting to go southbound onto the NC. There's barely 50-100m of conflicting crossover.

Why totally ignore what’s just to the south of that?

[Brucetiki]

Drone footage of Northern Connector Zone 1 & 2 progress as at April 2018: https://vimeo.com/265694616.

Unfortunately, nothing on the Bolivar Interchange.

That looks pretty impressive so far.

[mawsonguy]

The community update for May 2018 is now available online at https://www.infrastructure.sa.gov.au/__ ... _LR_v6.pdf. Nothing really new. However, it says that 13km of the 15.5km northern connector will be surfaced in concrete but the 4 interchanges will be surfaced in asphalt. I'm sure that there is a valid engineering reason for only asphalt being used at the interchanges. Could one of the engineers on the list tells what it is?

[Patrick_27]

The community update for May 2018 is now available online at https://www.infrastructure.sa.gov.au/__ ... _LR_v6.pdf. Nothing really new. However, it says that 13km of the 15.5km northern connector will be surfaced in concrete but the 4 interchanges will be surfaced in asphalt. I'm sure that there is a valid engineering reason for only asphalt being used at the interchanges. Could one of the engineers on the list tells what it is?

This was announced some time ago... The reasoning behind it is that concrete is cheaper and supports local industries that are producing it; it's also a lot stronger with a longer life and less maintenance required than that of asphalt which is perfect for a roadway expected to be used a lot by freight.

I think it's a great outcome and would love to see it considered more in Adelaide, especially bus heavy routes such as Grenfell and Currie Streets. What you'll notice a lot in Sydney is that there bus-lanes are made of concrete with asphalt for the neighbouring standard vehicle roadways.

[SBD]

The community update for May 2018 is now available online at https://www.infrastructure.sa.gov.au/__ ... _LR_v6.pdf. Nothing really new. However, it says that 13km of the 15.5km northern connector will be surfaced in concrete but the 4 interchanges will be surfaced in asphalt. I'm sure that there is a valid engineering reason for only asphalt being used at the interchanges. Could one of the engineers on the list tells what it is?

This was announced some time ago... The reasoning behind it is that concrete is cheaper and supports local industries that are producing it; it's also a lot stronger with a longer life and less maintenance required than that of asphalt which is perfect for a roadway expected to be used a lot by freight.

I think it's a great outcome and would love to see it considered more in Adelaide, especially bus heavy routes such as Grenfell and Currie Streets. What you'll notice a lot in Sydney is that there bus-lanes are made of concrete with asphalt for the neighbouring standard vehicle roadways.

So why would the interchanges be asphalt instead of building the full length with concrete? Does it have to do with wear, grip or noise when braking or turning for example?

[Patrick_27]

The community update for May 2018 is now available online at https://www.infrastructure.sa.gov.au/__ ... _LR_v6.pdf. Nothing really new. However, it says that 13km of the 15.5km northern connector will be surfaced in concrete but the 4 interchanges will be surfaced in asphalt. I'm sure that there is a valid engineering reason for only asphalt being used at the interchanges. Could one of the engineers on the list tells what it is?

This was announced some time ago... The reasoning behind it is that concrete is cheaper and supports local industries that are producing it; it's also a lot stronger with a longer life and less maintenance required than that of asphalt which is perfect for a roadway expected to be used a lot by freight.

I think it's a great outcome and would love to see it considered more in Adelaide, especially bus heavy routes such as Grenfell and Currie Streets. What you'll notice a lot in Sydney is that there bus-lanes are made of concrete with asphalt for the neighbouring standard vehicle roadways.

So why would the interchanges be asphalt instead of building the full length with concrete? Does it have to do with wear, grip or noise when braking or turning for example?

Good question, and one that I don't know the answer to... All I can offer is that concrete roads are made in such a way that gripping wouldn't necessarily be an issue, it could be a simple factor of asphalt is easier to lay in around bends than concrete otherwise maybe it's meant to act as an interchange or transition point between the concrete and asphalt surfaces... Who knows?

[aaronjameslange]

My guess is that the whole northern and southern interchange will be asphalt, but the rest of the connector in concrete. Bolivar and waterloo will have asphalt on ramps, off ramps, bridges etc, but i doubt the main carriageway will change to asphalt for such a short period. In otherwords, there will be 13km of continuous concrete dual carriageway from the northern end of the prexy interchange, to the southern end of the nexy interchange. As soon as you take an off ramp anywhere you will be on asphalt.