Speaking to someone inside the PTA the other day, it will probably be about Feb or March next year before any serious work is begun. Something to do with the fact they are still finalising some of the tunnel design in term of new regulations required for tunnels.
Ok Ladies and Gents..here is the gos on how the construction will work. Stage 1: Early March 2010
Stage 2: Completion of new underpass (south).
Stage 3: Slew the turnback to form Midland down. Midland line will use platform 7 (east). Platform 9 becomes non-operational. The 827 crossover will be removed. Construction of northern section of underpass to platform 9, 10 and Roe Street.
Stage 4: Reinstate turnback. Commission 818,819 (east) crossovers and 828 (east) points. Platforms 9 & 10 commissioned. Midland line services off platform 9 & 10. Complete underpass link to Perth Underground.
Stage 5: Fremantle mains slewed onto new alignment at Sutherland Street. New tunnel commissioned and Midland to Fremantle services restored. Armadale services terminate in Perth. Complete dive structur and west end of platform 6.
Stage 6: Final commissioning. Refurbish platforms 2,4 & 5.
Due for completion mid to late 2014.
Hope that helps you all
Platform 10 is going through on the back side of the existing Midland platform (No 9), along through the grass area between Roe Street and platform 9......
i think i had a diagram around somewhere of the new cross-overs going in, one was underneath the multistory carpark and Beaufort Street bridge, the other is on the west end of the station as the new track heads into the dive.....
The title should really be renamed. The station isnt going to be sunk, just the rail lines west of Perth station.come up with one then mate
this info comes right from the master plan, since we have a four metre long copy in the head office.......
The tunnel itself is not very long at all, and the cover begins at around the intersection of William and Roe Streets. The tunnel then only runs to level with the end of the NSR/SSR tunnel, and then rises alongside it. The existing cross overs at ground level will continue to be used, and the only difference will be the western cross over on the Freo line will be on the rise out of the tunnel, instead of at ground level.....
hope that makes a little sense, just helping to convey the ridiculously short nature of the tunnel itself......
Okay, this is an image i posted on another site, makes it a bit easier to figure out the changes being proposed:
the black is existing tracks, i am not too sure about platform numbers or anything though, so you will have to figure it all out the best you can!
The grey is the existing Freo line, which will be moved to the red location when the dive and tunnel is done.
the green is the Mandurah line underground, and the blue is the above ground portion. The crossovers on the west side of the station are being reversed in direction (red=new and grey=existing to be removed).
Hope this helps, unless i can get an electronic copy direct from work, this is the best i can do!
i do agree with you mate the thread is titled wrong, when i first read the title i thought they were having trouble with water or something under the station and it was literally sinking.The title should really be renamed. The station isnt going to be sunk, just the rail lines west of Perth station.come up with one then mate
I said that because more than once in this thread people have asked how they are going to sink the station when it isn't getting sunk at all.
Wasn't having a go and I don't really care about the title but for the people that don't know whats going on, it gives them the wrong idea.
Forward works (October 2010 – July 2011)
The first major change is closing Platforms 6 and 7 for upgrades from late October until mid-2011. During this time Fremantle Line services will move from Platform 7 to Platform 8. Armadale C# services, which currently depart from Platform 6, will also be relocated towards the Western Concourse, next to Platform 8.
While closed there will be no access to Platform 6 and 7 from the Eastern Concourse. However, an accessible walkway at the western end of Perth Train Station and the wooden footbridge near the Horseshoe Bridge will still be in place, to provide access to the relocated Fremantle and Armadale services.
The Australind platform does not get touched in the redesign of the platforms or tracks, and will operate throughout......... the actual station does not go underground, in case you were thinking that - the dives begin just before the west ends of platforms 6, 7 and 9 (and the soon-to-be-constructed 10), and the tracks will be underground at the intersection of William and Roe Streets....... they will then rise again alongside the Clarkson line rise, with the tops of the tunnels being extended to level with Lake Street........
The wooden footbridge is being dismantled - not demolished - and I believe has been promised to one group, but not sure who - it has been some time since I was involved in the tendering operation for this work.......
As for being a disaster, the staging of the works has undergone many revisions - all to allow the same number of services currently to operate throughout the works....... the only changes during the works will be platform changes - such as the Fremantle services operating from platforms 4 (?) and 5 during the tunnel works to the west of the station, or the shorter platforms during the construction of the underground connection at the west end of the platforms.......
Armadale = all stations
Armadale C = all stations to Claisebrook, then express to Cannington stopping only at Oats St.