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Bringing the N7 to motorway between Naas and Dublin

  • 30-09-2018 1:23am
    #1
    Registered Users, Registered Users 2 Posts: 24,820 ✭✭✭✭


    What needs to be done?

    But first,

    My plan

    My plan is for a new 6 lane motorway each way from Naas (with high occupancy lanes as well) until Newcastle where a new M4 would merge with the road and then a 9 lane each way highway the relatively short distance to the M50 where there would be a big spaghetti junction.

    The motorway could then continue toward the city/docks by widening and emptying the Grand canal and replacing with the road but first thing's first.

    You kill the M4 and M7 link with M50 with the one stone.

    Some are sceptical but it's a real plan that would work.

    So if we take the inferior plan (favored among the "it will do" posters) to upgrade the existing road to motorway what needs to be done?

    There are some petrol stations on the route and direct access junctions.

    The road would need serious expenditure just to mean it could be changed to an M road.

    A study was carried out in 2015 on bringing the existing carriageway to motorway standard but I don't see any results anywhere.

    Offline new carriageway would likely have to built on some sections.

    One way or another both the M4 and M7 have to reach the M50.

    Your opinions on the options.


Comments

  • Moderators, Science, Health & Environment Moderators Posts: 14,617 Mod ✭✭✭✭marno21


    What needs to be done?

    But first,

    My plan

    So if we take the inferior plan (favored among the "it will do" posters) to upgrade the existing road to motorway what needs to be done?

    There are some petrol stations on the route and direct access junctions.

    The road would need serious expenditure just to mean it could be changed to an M road.

    A study was carried out in 2015 on bringing the existing carriageway to motorway standard but I don't see any results anywhere.

    Offline new carriageway would likely have to built on some sections.

    One way or another both the M4 and M7 have to reach the M50.

    Your opinions on the options.

    I have removed the spawn of a night on mushrooms from the original post down to reality.

    Kildare County Council planned to do this back in 2015/16 but the costs of the plan meant it was abandoned.

    It would require the removal of the businesses along the route, the petrol stations, the garden centre on the outbound carriageway near Citywest. I presume there would also be an issue with Roadstone between Kingswood and Newlands Cross

    There are also plenty of LILOs and accesses, e.g. Colemanstown Lane inbound near the Kill exit, across the road from it there is a gated access. Plenty of T junction LILOs also e.g. Rathcoole at An Poitin Stil, the Citywest/Baldonnel roads

    Some further discussion on this here: https://www.boards.ie/vbulletin/showthread.php?t=2057539899 . If this thread relates to what is/was planned or what will likely happen I will merge the two.


  • Moderators, Science, Health & Environment Moderators Posts: 14,617 Mod ✭✭✭✭marno21


    Also, post from SSC that shows it may actually be cheaper to upgrade the N4 to motorway from Lucan to the M50 and build a new motorway from the M7 to the M4.

    The length of the N7 DC is quite considerable compared to the non motorway length of N4.

    https://www.skyscrapercity.com/showpost.php?p=148505977&postcount=2102


  • Registered Users, Registered Users 2 Posts: 24,820 ✭✭✭✭Kermit.de.frog


    Let me remind you of my plan.

    My plan is for a new 6 lane motorway each way from Naas (with high occupancy lanes as well) until Newcastle where a new M4 would merge with the road and then a 9 lane each way highway the relatively short distance to the M50 where there would be a big spaghetti junction.

    The motorway could then continue toward the city/docks by widening and emptying the Grand canal and replacing with the road but first thing's first.

    Let's get on with it.


  • Registered Users, Registered Users 2 Posts: 1,920 ✭✭✭zubair


    giphy.gif


  • Registered Users, Registered Users 2 Posts: 3,536 ✭✭✭JohnC.


    I don't think Kermit is going far enough. Tarmac the whole country so we have infinite lanes.



    Apologies for treating him with the seriousness he deserves.


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  • Registered Users, Registered Users 2 Posts: 7,303 ✭✭✭pad199207


    Let me remind you of my plan.

    My plan is for a new 6 lane motorway each way from Naas (with high occupancy lanes as well) until Newcastle where a new M4 would merge with the road and then a 9 lane each way highway the relatively short distance to the M50 where there would be a big spaghetti junction.

    The motorway could then continue toward the city/docks by widening and emptying the Grand canal and replacing with the road but first thing's first.

    Let's get on with it.

    Would a tunnel from the red cow into the city centre not be better?


  • Registered Users, Registered Users 2 Posts: 2,849 ✭✭✭Bards


    This whole country has the same population as Manchester... Time to get real with regards to better planning and not having a everything in Dublin mentality.

    M50 is bursting at the seems but yet the DAA wants to build another runway with no heavy rail or metro to the airport which will just lead to more congestion along the M7/N7 M50 corridor..the mind boggles


  • Closed Accounts Posts: 3,378 ✭✭✭CeilingFly


    Must be the change in weather affecting Kermit 😂

    There is a plan for a m4/n7 connection coming out near Rathcoole.

    There's another long term plan for the M9 to continue to the M1

    A large amount of traffic on the m50 heads onto the m7/n7 and vice versa.

    Moving this to another less congested route is what's needed.


  • Closed Accounts Posts: 3,378 ✭✭✭CeilingFly


    Bards wrote: »
    This whole country has the same population as Manchester.

    Manchester doesn't have the sea preventing development on one entire side and mountains preventing development on part of another side.

    And greater Manchester's population is 2.8m, (it's a big area - think Arklow to drogheda and out to monasterevin) but the city has a population of just over 500k

    As for traffic - it's utter hell at the best of times. Not something to look at for any inspiration.


  • Registered Users, Registered Users 2 Posts: 6,115 ✭✭✭Chris_5339762


    Kermit does have a recent history on here of an impractical number of lanes on his motorways, but lets not forget that the original plan for the N7 from Naas to the M50 was to build an M7 that would join the M50 at the unused J8. That would likely be three lanes each way and would have left the original Naas road (with lights etc) intact.


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  • Registered Users, Registered Users 2 Posts: 15,465 ✭✭✭✭loyatemu


    leaving aside the grandiose nonsense above, is there any major benefit to upgrading the N7 to motorway standard? It's already a grade-separated 6-lane 100km/h road.


  • Registered Users, Registered Users 2 Posts: 1,122 ✭✭✭Rulmeq


    CeilingFly wrote: »
    There is a plan for a m4/n7 connection coming out near Rathcoole.

    There's another long term plan for the M9 to continue to the M1
    Would you have links for either of those, would love to see them.


  • Closed Accounts Posts: 3,378 ✭✭✭CeilingFly


    Rulmeq wrote: »
    Would you have links for either of those, would love to see them.

    The M9 extension - called the m45, by some, but I reckon it will stay as M9 http://www.irishmotorwayinfo.com/inex/roads/m45/m45.html

    The Rathcoole scheme is long fingered but was mentioned in Applegreens planning application in relation to the truck parking area.

    I suspect it is one or the other and preferred road is M9 extension


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