Advertisement
Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.
https://www.boards.ie/group/1878-subscribers-forum

Private Group for paid up members of Boards.ie. Join the club.
Hi all, please see this major site announcement: https://www.boards.ie/discussion/2058427594/boards-ie-2026

DART+ (DART Expansion)

1417418420422423427

Comments

  • Moderators, Science, Health & Environment Moderators Posts: 5,583 Mod ✭✭✭✭spacetweek


    Hate to say I told ya so but the right way to do all these projects was from the 1990s-2030s, not all in a ten year period. That way we could have spread the load on the construction industry over a longer time and a homebrewed rail planning and construction industry would have sprouted. Instead we have a mad rush to get it all done ASAP which means huge state spending required and a lot of foreign talent having to move over for the duration, followed by a mass exodus when the current programme is done.

    That said Paris, Toronto, Montreal and Sydney are all doing the same famine-to-feast thing as us with not much rail construction in recent decades, now a huge expansion going on which will wrap up in the 2030s and it's not clear if any more projects will follow after that. Maybe this has to do with political cycles and it's the best we can do.



  • Registered Users, Registered Users 2 Posts: 18,691 ✭✭✭✭Idbatterim


    Question lads, would they ever build a tunnel for intercity, that would terminate at connell street etc, for the Cork line etc, that would bring you into central Dublin proper and connect with metrolink etc ?

    This would also take pressure off the overloaded luas red line



  • Registered Users, Registered Users 2 Posts: 74,567 ✭✭✭✭L1011


    No.

    Any Intercity tunnel, which is not on the cards at all, would absolutely not terminate anywhere; it would be through.



  • Registered Users, Registered Users 2 Posts: 19,140 ✭✭✭✭murphaph


    Maybe someday in the distant future in a united Ireland where all the island's railways are electrified at 200km/h or faster you might see a call for a DU'esque tunnel connecting the GSWR and GN lines to enable through running. It will not be in any of our lifetimes though.



  • Registered Users, Registered Users 2 Posts: 18,691 ✭✭✭✭Idbatterim


    Asking as I read this earlier...

    https://www.irishtimes.com/transport/2025/10/13/irish-rails-new-commuter-plan-will-make-thurles-as-accessible-to-dublin-as-greystones/



  • Advertisement
  • Registered Users, Registered Users 2 Posts: 19,140 ✭✭✭✭murphaph


    All the stuff they talk about in that article would need to be in place before a through tunnel would make any sort of sense really. The question would be how much demand there is for intercity travel through Dublin (really only Belfast-Cork could deliver the numbers) rather than to/from Dublin. How many people are wanting to get from Cork-Belfast (or points between) and do not want to get off in Dublin? I would say in 2025 the numbers wanting to make those journeys are quite small but in a post united Ireland scenario who knows. It's not something any of us will see though.

    It's interesting that the article states that 200km/h running would be possible on Dublin-Cork without any additional land take.



  • Registered Users, Registered Users 2, Paid Member Posts: 3,064 ✭✭✭KrisW1001


    That comment is interesting, given that IÉ’s own contributions to the All-Island Strategic Rail Review recommended a new, separate alignment from Hazelhatch to Portarlington for high-speed running because four-tracking here would be prohibitively expensive and destructive to existing properties. However, both statements can be true: the existing corridor is fit for 200 km/h, but if you want to retain that speed and increase regional services, then a new alignment will be needed too.

    The Cork-Dublin line is a very good alignment: it doesn’t really have any bad parts that would need to be completely bypassed, and there are twistier lines cleared for 200 km/h elsewhere.

    Coming back around to the thread topic: I wonder what provision has been made in DART+ for the electrification of the fast tracks into Heuston. The plans do not include it, but I wonder was the electrical infrastructure specified with a view to having four tracks at 1500 V DC rather than just two. This, of course, assumes that all electrification in the Greater Dublin Area will be 1500 V DC (like DART) rather than 25 kV AC (proposed for the national network); I can’t see IÉ operating with two electrical systems within Dublin - it’s extra costs, and a logistical nightmare that creates no-go areas for electric trains: far better to buy dual-system electric trains for inter-city use, and then power everything from 1500 V while in Dublin.



  • Registered Users, Registered Users 2 Posts: 19,140 ✭✭✭✭murphaph


    Interesting question. I would point out however that it's not unheard of for parallel tracks on the same alignment to operate at different voltages. In Berlin the Stadtbahn has 4 tracks on an embankment/viaduct cutting an east-west path through the city. Two of the tracks are the 750Vdc S-Bahn (third rail) and the other two are the 15kVac regional/intercity pair. In the Netherlands the legacy system is actually 1500Vdc overhead catenary and their newer intercity routes use 25kVac, so exactly the same as our planned sytsem. They have parallel sections of both systems.

    Personally I would like to imagine that the 1500Vdc electrification is a medium term "temporary" measure that will be confined to Dublin and gradually replaced with 25kVac or whatever is chosen for the rest of the network.

    Future non-DART stock could be ordered as single voltage 25kVac. Future DART stock could be ordered as dual voltage to allow the DART network to be gradually converted to 25kVac at our leisure. It's easier to go from DC to AC as it requires less infrastructure, fewer sub-stations and no rectification obviously. I hope the DART+ project implements clearances for 25kVac operation. The required 1500Vdc clearances to structures are presumably much lower than 25kVac clearances even though DC is "better" at arcing. Maybe an electrical engineer or equivalent can chime in there.



  • Registered Users, Registered Users 2 Posts: 124 ✭✭BestWestern


    The cork line trains comfortably travel at 160kph today, and an extra 20% wouldn't push the infrastructure that far.

    Top speed on the line yesterday morning on my train was 162kph.



  • Registered Users, Registered Users 2 Posts: 19,140 ✭✭✭✭murphaph


    Do we know the max design speeds for DART+?



  • Advertisement
  • Registered Users, Registered Users 2 Posts: 1,595 ✭✭✭spillit67


    1990s to the 2000s shouldn’t be included here. People go on like nothing happened but we rolled out a hell of a lot of Quality Bus Corridors as well as the original Luas.

    The QBCs were a remarkable success story, somewhat under told now relative to Luas. Bus use went up nearly 60% in 5 years and car use declined by nearly 20%. For some corridors like the N11 it was dramatic. I recall the big thing of people boasting about how much more efficient it was and how it was actually fashionable to get the bus for a bit. A lot of housing estates started to have people using them as unofficial park and rides (something not as prevalent today). It some ways I think this was harmful as it did give credence to the idea that the Big Bang solutions like Metro North and DART Underground could be delayed. There was a notable improvement in quality of life. Some of those upsides have been rolled back now imo as we never adequately fixed the inner city issues with our transport corridors and as the population grew, we inevitably saw more cars out on the streets and making places (like a Donnybrook) hostile to the bus again (and losing some of its utility). I believe though that at the time that it was transformative, just with a different badge on it to a Bus Connects today. Really Bus Connects feels like a way that the NTA decided to approach planning and capital funding in the post crash era, I think there is some discussion to be had as to whether it was the right approach in time.

    Irish Rail certainly struggled at the time to get much done beyond Malahide/Greystones DART improvements and also Heuston/Connolly improvements. My sense is at the time that you had an aversion to CIÉ within government (see the RPA) and as an organisation they struggled in that new environment.

    The late 2000s to now has been well discussed here in terms of the missed opportunity.



  • Registered Users, Registered Users 2, Paid Member Posts: 16,168 ✭✭✭✭loyatemu


    just came through my letterbox

    image.png

    it's about 2 years since the NTA told WCC that consultation was imminent! and unsurprisingly on the website itself, no actual details of the consultation yet.

    Post edited by loyatemu on

    Put your money where yer mouth is... Subscribe and Save Boards!

    https://subscriptions.boards.ie/



  • Registered Users, Registered Users 2 Posts: 1,595 ✭✭✭spillit67


    The funding on DART+ is what would concern me more. It hasn’t got attention but the Business Case is more out of date.

    I’m no expert on construction but I don’t think it’s beyond what the State can do. I’d guess looking at the figures that there is about 30k direct jobs from those projects required. Bus Connects would you assume require mostly people already engaged in road projects in Dublin. There’s things rolling on and off. Intel had about 6k at peak, for example.



  • Registered Users, Registered Users 2, Paid Member Posts: 3,064 ✭✭✭KrisW1001


    The Intel project often gets overlooked because it was private, and outside of Dublin, but it was a genuine megaproject, and thus very relevant to a discussion about our capability as a nation to complete large-scale construction projects. This was a €17 billion programme of works, and even when you strip out the factory equipment, you’re looking at €5~6 billion just on physical build, water, data-communications and power infrastructure.

    If Intel could find people for a concrete build of that size in this country, then the smaller build of DART+ won’t be a problem. Building an electric railway is a closer to building a factory than building a road.



  • Registered Users, Registered Users 2 Posts: 276 ✭✭Bsharp


    The funding/finance is my concern too.

    There's very little construction activity happening at minute so hard to tell how quickly the industry would get saturated. I know a good few people flying out to Europe to work on projects, especially data centres, they'd be delighted to work on the metro/luas/rail electrification at home even if it pays less.



  • Registered Users, Registered Users 2 Posts: 1,595 ✭✭✭spillit67


    NCH finishing up too (hopefully!). I’d be interested to know where all the workers on the National Broadband Plan end up too. Possibly ESB/Irish Water stuff?

    How many more people would you really need on a Bus Connects route than say the Clontarf to City Centre cycleway? Wasn’t there over 1,000 on that? They’re rolling that out sequentially rather than a big bang, which works really given the JRs going on.

    Because transport was painfully slow, there’s a bit of a myth that nothing has been done on capital projects. That’s really not the case.

    I’m a bit dubious on DART+ and number of workers actually required. I know there are heavy enough standalone projects like Spencer Dock but they’ll almost certainly do the thing in stages.



  • Registered Users, Registered Users 2, Paid Member Posts: 3,064 ✭✭✭KrisW1001


    I agree. This isn’t MetroLink - there isn’t a huge structure to be created before we can even start. It’s a refurbishment and electrification on an existing railway, reconstruction of some major road bridges, and construction of at least one new major passenger station. Still a big project, but DART+ SW is not much bigger than the Kildare Route Project, and that all happened largely without anyone noticing.



  • Registered Users, Registered Users 2 Posts: 4,540 ✭✭✭goingnowhere


    DART+ SW is much smaller than KRP for the most part its just stick up the wires. The bit from Park West to Heuston was removed from the KRP to cut costs back in the day. Tiny bit tricky between Inchicore and Heuston to make space.

    DART+ W will be challenging given the urban environment and level crossing removals

    DART+ N probably the simplest of the projects, minimal civils

    Putting the wires up is relatively simple

    • Team to bore holes, concrete foundations
    • Team to crane in masts and bolt down
    • Team to string up wires

    The Foynes project is all but complete and progress on Midleton is rapid, second track has started to be laid so there are skilled teams available. Also the UK has pulled the plug on more electrification so there are a lot of skilled folks hanging around. Paris is completing its massive metro expansion also.



  • Registered Users, Registered Users 2 Posts: 40 orb123


    I presume that Coastal South is fairly straight forward too?



  • Registered Users, Registered Users 2, Paid Member Posts: 3,064 ✭✭✭KrisW1001


    That depends on whether they still want to address the level crossings in the Southside of Dublin…



  • Advertisement
  • Registered Users, Registered Users 2, Paid Member Posts: 16,168 ✭✭✭✭loyatemu


    per the flyer I posted above, "stage 1" is the Bray-Greystones enhancement, presumably stage 2 is the LCs and may never happen.

    Put your money where yer mouth is... Subscribe and Save Boards!

    https://subscriptions.boards.ie/



  • Registered Users, Registered Users 2, Paid Member Posts: 1,454 ✭✭✭riddlinrussell


    Coastal South from a technical standpoint ranges from simple (some track realignments and passing loop work, signalling and station upgrades) to fairly significant (new bridges and track raising/lowering) depending on what happens with the level crossings in South Dublin.

    Whether it will ever get to that point given the political/Judicial pressure the greatly offended of the leafy suburbs can bring to bear is another matter entirely...

    Boards is in danger of closing very soon, if it's yer thing, go here (use your boards.ie email!)

    👇️ 👇️



  • Registered Users, Registered Users 2 Posts: 14,217 ✭✭✭✭Zebra3


    New sub-stations for DART W and SW, I assume.

    A



  • Registered Users, Registered Users 2 Posts: 10,371 ✭✭✭✭cgcsb


    Coastal North is now facing a JR from a farm owner beside rush and lusk station



  • Registered Users, Registered Users 2 Posts: 4,540 ✭✭✭goingnowhere


    Substations are all to a common design, are simple to build structures which do not encroach on the live railway



  • Registered Users, Registered Users 2 Posts: 256 ✭✭OisinCooke




  • Registered Users, Registered Users 2 Posts: 522 ✭✭✭PlatformNine


    Had a little look through IE's response to the PC submission (not the submission itself, it is 54 pages and based on what I'll explain below may be… problematic), and my takeaways are:

    • They objected to the location of a substation/OHLE maintenance compound
    • They wanted it to be on the west side of the track/station not the east side as is planned
    • All of the information the company was operating off of was incorrect/out-of-date, IÉ makes it sound like it was based on pre- non-statutory consultation information, meaning even then it would have been 2-3 years old.
    • They had met with IE many times before the submission to ACP, and despite this their submission still showed that they still had little to no understanding of what they were objecting to and/or operating on out-of-date information
    • They had also supposedly come to an agreement with IÉ (verbal and email) about how they will move forward, and despite this still submitted the objection to ACP and now the JR

    It sounds as though their objection essentially ignored any changes to the plan that was made to accommodate them. They then gave IÉ the go-ahead before preceding to object to the plan anyways, and they have now file a JR application.

    Ideally this would be the textbook example of a JR application to throw out. They have either maliciously or through sheer incompetence failed to engage with the PC process, they also then lied to IÉ that they were okay with it moving forward. Especially if the meetings were recorded or the emails are still saved, they should be laughed out of court.

    I also am 100% assuming they are trying to look for an easy payout, and it wouldn't be the first business to file a JR to do so.

    On the bright side, I do believe the window to file a JR has ended meaning this is the only one? Additionally, I think D+N does fall under the new JR rules? Which I think means there will be no need for leave to apply (may have butchered that term), but also that the grounds cannot be amended after the application, and important to my points above for an application to be approved the objector must have engaged in good faith with IÉ.



  • Registered Users, Registered Users 2 Posts: 459 ✭✭Thunder87


    I'm not really sure how it all works now but it was approved in August which is before the new legislation came into effect, so I guess it'll likely have to go through the full drawn out circus act?

    Best we can hope for is probably for IÉ give them a pay out behind the scenes or whatever tactic they used to get the other Dart+ JR's withdrawn, otherwise that's another 1-2 years down the tubes



  • Registered Users, Registered Users 2 Posts: 14,217 ✭✭✭✭Zebra3


    No way in hell should taxpayers’ money be used to pay off extortionists.



  • Advertisement
  • Registered Users, Registered Users 2 Posts: 2,512 ✭✭✭MayoSalmon




Advertisement