Sensational-Adelaide.com

The aim is to shift traffic more efficiently as part of the greater South Road problem, but I’m still scratching my head about this – we could’ve had 23km of light rail to Port Adelaide for the same price. There are supposed economic benefits, no doubt, but I question the need for so much more concrete, so much more steel reinforcement and so much more bitumen – and little else – over a more traditional road solution.

Some might say the solution picks the low-hanging fruit, by ignoring more important and problematic parts of South Road – the intersections with Port Road, Richmond Road or Sir Donald Bradman Drive, for example.

drsmith wrote:Those last two photos are amazing.

That deck section is obviously counter balanced north/south, but how much stress would the uneven load be putting on the supporting bridge pier ?

It would be a bit of a bugger if it all came crashing down on the intersection of Grand Junction Road.

crawf wrote:This thing is so ridiculously tall, it's going to be quite a site driving so high above the ground level. Possibly some great city views.

AG wrote:

drsmith wrote:Those last two photos are amazing.

That deck section is obviously counter balanced north/south, but how much stress would the uneven load be putting on the supporting bridge pier ?

It would be a bit of a bugger if it all came crashing down on the intersection of Grand Junction Road.

The huge unsupported overhang would be creating a large rotating force (bending moment we call it in structural engineering) that would require strong resistance from the (I hope) deep foundation to stop it from overturning. It's amazing what reinforcing steel can do when combined with concrete.

Maximus wrote:

AG wrote:

drsmith wrote:Those last two photos are amazing.

That deck section is obviously counter balanced north/south, but how much stress would the uneven load be putting on the supporting bridge pier ?

It would be a bit of a bugger if it all came crashing down on the intersection of Grand Junction Road.

The huge unsupported overhang would be creating a large rotating force (bending moment we call it in structural engineering) that would require strong resistance from the (I hope) deep foundation to stop it from overturning. It's amazing what reinforcing steel can do when combined with concrete.

Let's just hope there are no engineers from Canberra working on it. A half-finished bridge just like this actually did collapse a couple of years ago...

http://the-riotact.com/gde-collapses-on ... hway/26041