Dudley, here is a more detailed plan of where the bridges and viaducts are
on the Western Sydney Metro.
https://www.skyscrapercity.com/cdn-cgi/image/format=auto,onerror=redirect,width=1920,height=1920,fit=scale-down/https://www.skyscrapercity.com/attachments/metro-airport-alignment-jpg.4967037/
Tony P
On Monday, 15 May 2023 at 14:44:58 UTC+10 Dudley Horscroft wrote:
> Thanks, Tony P for the info on the Airport line.
>
> Dudley
> On 14/05/2023 8:30 am, TP wrote:
>
> There's not a "change of gauge" issue because services on the different
> metro lines will never be required to through-run onto each other. Avoiding
> line entanglement is part of the whole point of it.
>
> The first line is 1,500 volts DC because it includes two existing sections
> of line that already had DC power. You could argue the decision but perhaps
> they found it cheaper than converting the power supply for the existing
> lines.
>
> Dudley, construction and tunnel boring of the Western Sydney line as
> already underway. The land there is very undulating and rises to the
> airport, so there are tunnels at each end. The rest is on the surface or on
> viaducts.
>
>
> https://www.felix.net/hs-fs/hubfs/Felix%20Project%20News/Content%20images/Project%20alignment%20map%20EIS%20Oct2020%20(1).jpg?width=3000&name=Project%20alignment%20map%20EIS%20Oct2020%20(1).jpg
>
> Tony P
>
> On Saturday, 13 May 2023 at 23:00:09 UTC+10 Dudley Horscroft wrote:
>
>> From Google Maps, the route is almost entirely agricultural land, with
>> the occasional hamlet. As such the line, if built, should be at grade
>> except for overpasses of roads. And possibly a very short subway where a
>> hamlet cannot be avoided.
>>
>> So, is it to be economical, with short lengths of elevated tract or
>> expensive, with tunnel throughout. If the latter, I reckon they should
>> wait till they can get the TBMs released from the Snowy 2 debacle.
>>
>> Dudley Horscroft
>> On 13/05/2023 9:52 pm, Robert Taaffe wrote:
>>
>> Are the Airport Metro trains still going to be 25kV? In which case do we
>> never learn the lessons of the gauge debacle?
>>
>> On 13 May 2023, at 9:06 pm, TP histor...@...> wrote:
>>
>>
>> https://www.railexpress.com.au/wp-content/uploads/2022/12/Siemens-Mobility-InfoGraphic-1024x576.png
>>
>> Tony P
>>
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