Marion Station Underpass

 
  Milkomeda Chief Train Controller

Just saw this got put up on the DPTI site a pedestrian underpass is to be built under the Marion Station to accommodate safety regulations for electrification because the overpass does not meet them.

http://www.infrastructure.sa.gov.au/RR/rail_revitalisation/marion_station_underpass

Construction work starts on the underpass in August and be operational at the end of October and full works complete by the end of 2013 alternative pedestrian crossing will be provided so it doesn't effect the opening date of the Noarlunga Line reopening from my understanding.

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  justapassenger Minister for Railways

Just saw this got put up on the DPTI site a pedestrian underpass is to be built under the Marion Station to accommodate safety regulations for electrification because the overpass does not meet them.

http://www.infrastructure.sa.gov.au/RR/rail_revitalisation/marion_station_underpass

Construction work starts on the underpass in August and be operational at the end of October and full works complete by the end of 2013 alternative pedestrian crossing will be provided so it doesn't effect the opening date of the Noarlunga Line reopening from my understanding.
Milkomeda
The design looks rather bizarre and anti-user to me. Running an underpass ramp off the end of the platform (i.e. not from the middle) means there is no opportunity to include stairs from the platform for those who are able to use them as a shortcut. If there were to be both a ramp and stairs, the entrances could be roughly 1/4 and 3/4 of the way along the platform instead of all users being required to go all the way to one and and then 80 metres beyond that, pointing away from the main trip generator (Westminster College) and the provided parking at that.

I wonder if the reason for the odd design is another case of central design without local knowledge, or just cost cutting? The cynic in me says that putting the ramp off the end is actually about justifying that it's not a modification to the platform and therefore no money needs to be spent bringing the platform up to DDA standards.

Still, at least it's not quite as silly as the stair-only bridge over the ARTC track built at Blackwood to the main station parking last year.
  steam4ian Chief Commissioner

For what it is worth, and I know that is not much, I approve.

By locating it at the up end they can take advantage of the relative rail height to the surrounding area levels.
This makes the underpass more open and less threatening to users much like the underpass at Hallett Cove Beach. Is also more accessible to persons not pax crossing the tracks.

The alternative could have been an active pedestrian crossing but this can be subjected to vandalism and missuse by school kids.
  sr1180 Locomotive Fireman

Apparently it was originally an overpass because of the extremely high water table in the area. Since the sturt creek was cemented, probably not so much of an issue any more.
  GN4472 Deputy Commissioner

Salisbury could use one of these too, at the moment there is only pedestrian access at the Southern end of the down platform during the day - Not good for crowds!

Let's hope the new Marion underpass is managed properly and doesn't end up smelling like a toilet like many on the Gawler line.
  mmciau Locomotive Driver

Location: Marion, South Australia
Terrible design - absolutely no consideration for a majority user of the current crossing - Westminster College.

That layout shows the entrance of the proposed tunnel at the eastern end of the platform
  yoyoman Junior Train Controller

Location: Adelaide, SA
The document linked by OP indicates the key benefits of the north eastern location and explains that the area around the existing overpass has underground stormwater infrastructure that prevents an underpass being built at that location.
  justapassenger Minister for Railways

The document linked by OP indicates the key benefits of the north eastern location ...
No it doesn't. It only demonstrates that the DPTI has a