Altona line duplication options

 
  ngarner Chief Train Controller

Location: Seville
Somewhere on this forum, which I cannot find after doing a reasonable amount of searching, is a comment about how duplicating the Altona line is constrained by roads on either side of the formation.


Railway St Nth and Sth, from Greive Pde to Westona, limit ground level duplication. However, with the LXRAs continued use of elevated cast concrete channels, such as used on the CD9, elevated rail from the up side of Civic Pde, to either up or down sides of Westona station would overcome this space limitation. Civic Pde, Millers Rd, Pier St and Grieve Pde crossings would all be removed as a result and, depending on how warranted replacing the, relatively, recent station at Westona is, Maidstone St could be included if the elevated track extended to the down side of Westona.

Duplicating the remaining lengths of line would then be a, relatively, simple task.

This could be a follow on project after completion of the Cranbourne/Clyde and Hurstbridge duplications, which, considering the increasing number of references to the fact that Melbourne has far more single line sections than a modern rail network should have to maintain timetables, would mean one less single line section.


Any comments or ideas to improve this?

Neil

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  TOQ-1 Deputy Commissioner

Location: Power Trainger
If you elevate the line, do you really need a full size road on both sides of the viaduct? Half the width of the Station St South road where practical and turn it into a one way service lane. I am suggesting that it be done to the south one as it has fewer property frontages where a service lane might not be needed at all - e.g. outside Altona Primary school.
  LancedDendrite Chief Commissioner

Location: North Haverbrook; where the monorail is king!
Somewhere on this forum, which I cannot find after doing a reasonable amount of searching, is a comment about how duplicating the Altona line is constrained by roads on either side of the formation.


Railway St Nth and Sth, from Greive Pde to Westona, limit ground level duplication. However, with the LXRAs continued use of elevated cast concrete channels, such as used on the CD9, elevated rail from the up side of Civic Pde, to either up or down sides of Westona station would overcome this space limitation. Civic Pde, Millers Rd, Pier St and Grieve Pde crossings would all be removed as a result and, depending on how warranted replacing the, relatively, recent station at Westona is, Maidstone St could be included if the elevated track extended to the down side of Westona.

Duplicating the remaining lengths of line would then be a, relatively, simple task.
ngarner
To fully duplicate you're looking at 3km+ of viaducts between Civic Parade (Seaholme) and Westona, in addition to duplicated ground level track along the rest of the line. That's a lot of money to spend in an area like Altona, although the urban development improvements that it could bring would be enormous.

On the other hand, the current arrangements are totally unsatisfactory for reliable train running - even after the addition of some duplicated track at Altona Junction following the level crossing removal.

A more appropriate solution might be to just run duplicated track at grade from Laverton Junction to Westona and extend the duplication an extra 1300m from Kororoit Creek to about 200m before Civic Parade level crossing (to leave room for eventual total duplication and grade separation). That would at least give the line some wiggle room to ward off the high rate of 'loop bypassing' that has occurred in the last few years.

Cheaper still (channelling ZH1231463423525) would be to rebuild Paisley station and build a strong frequent bus network that circulates through Altona with all services running to Paisley. Keep the Altona train running, but offer no further infrastructure or service improvements.
  tom9876543 Train Controller

I had a quick look on google maps.
IMHO there IS enough room for second rail line, north of existing track, between Seaholme Station and Altona Station.
Dual track and second platforms can be built at Seaholme and Altona.
Would this simple upgrade would be adequate to meet timetable requirements?
  True Believers Chief Commissioner

The Transport For Victoria has the feasibility study for the Altona rail duplication (not publically available though), the study is complete according to Aurecon (I sent them a message while ago)

If anyone here has access to it, that would be cool, I'm still curious what that feasibility study has to offer.
  ngarner Chief Train Controller

Location: Seville
Found a video, on Youtube, of the Altona line, largely pre-completion of the removal of the Kororoit Creek Rd level crossing, although there's a short bit at the end with the crossing replaced.
The line appears to be able to be duplicated without too many problems, the catenary and other support structures would be the limiting factor, as there appears to be enough room for two tracks; apart from the stretch between Altona and Westona. This section is really tight unless some ground is taken from the adjoining land.
What a short sighted decision to only lay one line between Westona and Laverton! As LD says, duplicating that section would be easy and reduce the problems of this line

Altona line



Neil
  Altona Loopy Station Master

Somewhere on this forum, which I cannot find after doing a reasonable amount of searching, is a comment about how duplicating the Altona line is constrained by roads on either side of the formation.


Railway St Nth and Sth, from Greive Pde to Westona, limit ground level duplication. However, with the LXRAs continued use of elevated cast concrete channels, such as used on the CD9, elevated rail from the up side of Civic Pde, to either up or down sides of Westona station would overcome this space limitation. Civic Pde, Millers Rd, Pier St and Grieve Pde crossings would all be removed as a result and, depending on how warranted replacing the, relatively, recent station at Westona is, Maidstone St could be included if the elevated track extended to the down side of Westona.

Duplicating the remaining lengths of line would then be a, relatively, simple task.
To fully duplicate you're looking at 3km+ of viaducts between Civic Parade (Seaholme) and Westona, in addition to duplicated ground level track along the rest of the line. That's a lot of money to spend in an area like Altona, although the urban development improvements that it could bring would be enormous.

On the other hand, the current arrangements are totally unsatisfactory for reliable train running - even after the addition of some duplicated track at Altona Junction following the level crossing removal.

A more appropriate solution might be to just run duplicated track at grade from Laverton Junction to Westona and extend the duplication an extra 1300m from Kororoit Creek to about 200m before Civic Parade level crossing (to leave room for eventual total duplication and grade separation). That would at least give the line some wiggle room to ward off the high rate of 'loop bypassing' that has occurred in the last few years.

Cheaper still (channelling ZH1231463423525) would be to rebuild Paisley station and build a strong frequent bus network that circulates through Altona with all services running to Paisley. Keep the Altona train running, but offer no further infrastructure or service improvements.
LancedDendrite

If so, Paisley would be a Monday - Friday station only given all Werribee trains run via the Altona Loop on weekends / public holidays.

Duplicating Laverton junction to Westona and Altona Junction to Civic Parade would allow 15 minute intervals and would be a vast improvement for the poor commuters on the loop. Would also be sufficient.

I often think the numbers on this section are under estimated as I doubt they include the many commuters who prefer (me being one regularly) to board an AL train at Laverton to avoid the crush on ex-Werribee express trains.

If these people "tap" on at Laverton the metro figures probably assume we all board the express train to Newport?

By the time the AL trains reach Newport they are comfortably full now. Denser households through Altona has definitely increased patronage recently IMO.
  Maximas Station Master

Location: Geelong

If so, Paisley would be a Monday - Friday station only given all Werribee trains run via the Altona Loop on weekends / public holidays.

Duplicating Laverton junction to Westona and Altona Junction to Civic Parade would allow 15 minute intervals and would be a vast improvement for the poor commuters on the loop. Would also be sufficient.

I often think the numbers on this section are under estimated as I doubt they include the many commuters who prefer (me being one regularly) to board an AL train at Laverton to avoid the crush on ex-Werribee express trains.

If these people "tap" on at Laverton the metro figures probably assume we all board the express train to Newport?

By the time the AL trains reach Newport they are comfortably full now. Denser households through Altona has definitely increased patronage recently IMO.
I'm much the same, Altona loop trains definitely see some decent school traffic between Newport and Flinders st from 3-4pm as well.

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