Goodwood Junction Underpass

 
  justapassenger Minister for Railways

The stated reopening time for Belair has always been a very non-specific mid-2013, so it could be any time from April to September. I suspect that in part it will be dictated by the contract terms worked out with Torrens Transit, for a line treated with such disdain by DPTI it's possible they'll leave that in place for a few weeks until the contract finishes, rather than paying for both bus and rail services simultaneously.

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  steam4ian Chief Commissioner


G'day all

By now the SG line should be reconnected and over the underpass.

I went and had a look about 1730 and they still had about 5 metres of rails to weld in and the track north of the underpass to to pack and level.

One bloke told me the first train was due through at 2000. It looked like they had a fair chance.

As I have said earlier there is still a lot of work to do before the Belair train could run again although the base for the south suburban, if single track to Keswick site, looked well established when I crossed Keswick bridge. the base area for the South Main looked very average.

Ian

  BillD Chief Train Controller

Hi Ian,
When I arrived at 9:30pm the tamper and regulator were working between Victoria St and the tram bridge.
The first train southbound over the new alignment was at 11:30pm.
Most of the workers left straight after the train passed, but signalling types were working in their electrical box.
Bill.
  62440 Chief Commissioner

Went for a stickybeak this week. Every access point has a stroppy young person keeping you away from the fence and I had one girl trying to block my camera telling me I couldn't take photos (even though I was on a public road). They seem overly sensitive. Good luck keeping photographers away on the next SASMEE open day! The Brownhill Creek diversion is not complete, restricting activity so little excavation has taken place.
They will need to work hard if they want to run electric trains there in September.
The top on the ARTC south of the underpass is interesting.
  Milkomeda Chief Train Controller

Went for a stickybeak this week. Every access point has a stroppy young person keeping you away from the fence and I had one girl trying to block my camera telling me I couldn't take photos (even though I was on a public road). They seem overly sensitive. Good luck keeping photographers away on the next SASMEE open day! The Brownhill Creek diversion is not complete, restricting activity so little excavation has taken place.
They will need to work hard if they want to run electric trains there in September.
The top on the ARTC south of the underpass is interesting.
62440

Its been stated multiple times that electric trains won't be going into public service until December/January. Infact I think only around 60-70% of the masts will be installed on the entire Seaford Line by the time the Noarlunga Line reopens in September.
  62440 Chief Commissioner

Its been stated multiple times that electric trains won't be going into public service until December/January. Infact I think only around 60-70% of the masts will be installed on the entire Seaford Line by the time the Noarlunga Line reopens in September.
Milkomeda
I'll rephrase that. I'll be impressed if passenger trains run through the underpass in September. It is achievable. If public electric passenger trains are to start in December, they will need several weeks of electrical testing so non-public electric trains should be appearing in late October/ November. Wiring will need to be in place by October.
The only certainty is that there will be a public ribbon cutting for public electric train services before the election in March.
  steam4ian Chief Commissioner

I'll rephrase that. I'll be impressed if passenger trains run through the underpass in September. It is achievable. If public electric passenger trains are to start in December, they will need several weeks of electrical testing so non-public electric trains should be appearing in late October/ November. Wiring will need to be in place by October.
The only certainty is that there will be a public ribbon cutting for public electric train services before the election in March.
62440

With 4 out 9 months to go the underpass and the track upgrade appear to be going well. That said, I don't know what the project schedule is.

I am certain of one thing, an opening of the underpass before Sept 14 election day would be a certain goal.
  kipioneer Chief Commissioner

Location: Aberfoyle Park
The top on the ARTC south of the underpass is interesting.
62440
Is that section still on timber sleepers?

It was the only bit not changed to concrete prior to standardisation - Millswood to Goodwood Junction.
  Gayspie Deputy Commissioner

Location: Adelaide, SA
how's the new Belair passing loop going at Goodwood?
  mclaren2007 Assistant Commissioner

Location: recharging my myki
Hows the whole eastern side of the works going, including the track works up through Goodwood Station and the new station as well?
  Milkomeda Chief Train Controller

Haven't noticed any track progress on the eastern side but on the western side track has been laid from Leader Street to the Wayville station. This is probably to be expected since up to Goodwood underpass the Noarlunga Line will now be on the eastern side with the Belair Line now on the opposite side (western side) because of the underpass.

I do find it a bit odd they haven't laid track up to Anzac highway bridge Belair Line side yet though unless they plan to use the cross over right near leader street.
  mclaren2007 Assistant Commissioner

Location: recharging my myki
oh yeah forgot about that, thought that Noarlunga would still use Platforms 2 and 3 at Goodwood.
  62440 Chief Commissioner

(First go at posting photos, here's hoping)

[bigimg]http://i1278.photobucket.com/albums/y501/62440/IMG_0854_zps8bb64243.jpg[/bigimg]
ARTC track, note concrete sleepers. Belair loop base visible ready for base ballast

[bigimg]http://i1278.photobucket.com/albums/y501/62440/IMG_0851_zps2828dfbb.jpg[/bigimg]
Start of the dive alongside SASMEE

[bigimg]http://i1278.photobucket.com/albums/y501/62440/IMG_0843_zpsff151d3d.jpg[/bigimg]
Brownhill Creek diversion where it joins the original course. It looks like this will be ready to take the creek in the next couple of weeks allowing the existing bridge to be removed.
  Aaron The Ghost of George Stephenson

Location: University of Adelaide SA
(First go at posting photos, here's hoping)
62440
Nicely done.
  simont141 Chief Commissioner

Location: Adelaide
The Brownhill Creek diversion where it parallels the tram overpass (as per above photo) is very aquatic at the moment. Last time it rained, it was several days before the water receded and the area cleaned. Not sure if this has caused any delays elsewhere in the site.
  David Peters Dr Beeching

Location: "With Hey Boy".
Anyone wanting to know what the track layout is at the new Wayville station should get hold of the current Edition of the Catchpoint magazine on page 14 there is a track and signal diagram showing how it will be set up when finished. By the way the Catchpoint is out now as well if you want to buy one, members one's should be in the mail and should turn up soon.
  Milkomeda Chief Train Controller

I got a brief look at the underpass on the tram today the underpass looks quite deep now shouldn't be too much longer before excavation works are complete of the underpass. Will they start laying concrete on the sides of the underpass immediately after the excavation works are done?
  nm39 Chief Commissioner

Location: By a road taking pictures
I got a brief look at the underpass on the tram today the underpass looks quite deep now shouldn't be too much longer before excavation works are complete of the underpass. Will they start laying concrete on the sides of the underpass immediately after the excavation works are done?
Milkomeda
As the excavation has got deeper the sides have actually been Shotcreted when full depth has been achieved for a reasonable distance.
  Milkomeda Chief Train Controller

The torrential rain we got today surely will delay the underpass works for a bit. Its been years since I've seen rain this heavy here.
  witsend Chief Commissioner

Location: Front RH Seat of a School Bus
[bigimg]http://i1278.photobucket.com/albums/y501/62440/IMG_0854_zps8bb64243.jpg[/bigimg]
(Source: 62440)

Not to sure if anyone else noticed, but the signal post used for NR4 on the photo is a different style. This is one of the tilt poles that actually allow the electrician to work on the ground, rather than in air, which should assist in speeding up maintenance, but also allows them to be away from the overhead in the electric area. There's a few of these appearing on the AdelaideMetro network as well. I believe one is near North Adelaide station on the up, just around the bend. I'm wondering how many will appear along the Seaford Line as part of the electrification works.
  justapassenger Minister for Railways

The torrential rain we got today surely will delay the underpass works for a bit. Its been years since I've seen rain this heavy here.
Milkomeda
I wouldn't call it torrential because it hasn't seemed too heavy to me. The thing that's been amazing is that it was so sustained across the whole day, when the Adelaide area normally tends to get short rain bands sweeping across and drying up soon after.

Regardless of what adjective is most appropriate, 35.4 mm in 12 hours is a very rare thing for BOM at Kent Town. There would have been a lot more coming down in the foothills that flow into Brownhill Creek though.

This kind of weather shouldn't be too much of a problem for the construction crews, since any project manager worth their salt would consider the average number of days with rainfall when working out scheduling. Since the start of January weather has been very good for construction, there has been only 17 days in five months with rainfall >1mm and greater than evaporation on the same day, which should have had them coming in ahead of schedule (assuming everything else going to plan) up to now.
  don_dunstan Dr Beeching

Location: Adelaide proud
.....
Regardless of what adjective is most appropriate, 35.4 mm in 12 hours is a very rare thing for BOM at Kent Town. There would have been a lot more coming down in the foothills that flow into Brownhill Creek though.
.....
justapassenger

Wow, that's a lot of rain-  I bet the Torrens is actually flowing.
  Aaron The Ghost of George Stephenson

Location: University of Adelaide SA
Wow, that's a lot of rain-  I bet the Torrens is actually flowing.
"don_dunstan"

I can tell you BHC was only at a moderate flow when I saw it about 1430 this afternoon, not a lot of water to be honest.Tthe kind of rain that facilitated most soaking in rather than running off. The Torrens was disinteresting tonight when I walked along it between 2200 and 2300.
  justapassenger Minister for Railways

I can tell you BHC was only at a moderate flow when I saw it about 1430 this afternoon, not a lot of water to be honest.Tthe kind of rain that facilitated most soaking in rather than running off. The Torrens was disinteresting tonight when I walked along it between 2200 and 2300.
Aaron
I don't think the soaking in is to do with the "kind of rain", but rather to do with the summer and autumn being dry (24% below average rainfall for the previous six months) and clay soil having contracted due to it also being so hot as well as dry.

Wait until tomorrow and the level will rise along Brownhill Creek as the runoff works its way down, and being so flat (the flow is driven by the water level rather than gravity) it will stick around for a couple of days after the rain stops.

This was a fairly large rain event, though not extreme, if you look at the numbers. It was enough to take us to 45% of the monthly mean rainfall for June (our wettest month, at that) in the first 12 hours of the month (rainfall is measured daily at 9am from the previous 24 hours). If it had happened a day earlier, the total for January-May would have been 5% over average instead of the 18% under it was.

The best news with this rain is that a good amount managed to get over the Mt Lofty Ranges - Murray Bridge Airport has had 54mm so far.

Wow, that's a lot of rain-  I bet the Torrens is actually flowing.
don_dunstan
The current plan for maintaining the Torrens (for preventing algal blooms and keeping the riverbed moist to avoid problems for structures) has at least a slow flow going all the way along, every day of the year. If you go to the weir at the western end of the Torrens Lake you will almost never see it without water flowing over the top, even in the middle of summer. This water comes from the spring-fed creeks and from the reservoir at Kangaroo Creek.

The Onkaparinga is a different issue. Strategies may have changed a little now that Happy Valley Reservoir is also fed from the big white desal plant with the trunk, but it definitely used to be the case that nothing other than what was needed to feed Happy Valley (via the Clarendon weir and pipeline) would be released from Mount Bold if the level there was low, they would happily let the Onkaparinga between Clarendon and Old Noarlunga dry up.
  Aaron The Ghost of George Stephenson

Location: University of Adelaide SA
I don't think the soaking in is to do with the "kind of rain", but rather to do with the summer and autumn being dry (24% below average rainfall for the previous six months) and clay soil having contracted due to it also being so hot as well as dry.
"justapassenger"

Anecdotal evidence suggests that flash floods often break dry spells, not because the soil is dry and absorbent due to cracking, but because the soil is both dry and 'not wet' (not the same thing). This happens because rather than penetration and soaking you get near 100% free water in run off.

Today's rain even was a slow downpour with an extended time period, much of the falling water will soak not run off, as referenced by the slack water flow at BHC today. Much smaller downpours have seen the creek run much faster than today. Much of the water that will appear in the creek in the coming days will not come from surface water, but will instead come from underground hydrogeologic flow.

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