N3 road (Ireland)

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N3 road shield}}
N3 road
Bóthar N3
Route information
Length127.39 km (79.16 mi)
(bypassed routes in italics)
Highway system

The N3 road is a national primary road in the Republic of Ireland, running between Dublin, Cavan and the border with County Fermanagh. The A509 and A46 roads in Northern Ireland form part of an overall route connecting to Enniskillen, and northwest to the border again where the N3 reappears to serve Ballyshannon in County Donegal.

Rush hour congestion between Navan and Dublin city was very heavy (up to 22,000 vehicles per day on single carriageway portions of the N3 in 2002), and problems occurred at most built-up areas between these points. A tolled motorway bypass replacement, the M3 motorway, was opened to traffic on 4 June 2010.

The former section from its junction with the M50 to Dublin city centre, as well as the bypassed section from Clonee to the border with County Cavan, have been reclassified as the R147 road.


The old N3, between Clonee and Dunshaughlin

The route, known as the Navan Road as it leaves Dublin, starts at its junction with the M50 motorway (Junction 6) and then bypasses Blanchardstown, Mulhuddart and Clonee with a dual carriageway. The dual carriageway changes into the M3 motorway near the Meath border by-passing Dunshaughlin and Navan. Near Kells the route continues as the N3 dual carriage way to the border with County Cavan. It then passes through Virginia, past Cavan Town and continues past Butlersbridge and past Belturbet.

The route then crosses the border into Northern Ireland at the Senator George Mitchell Peace Bridge (also known as Aghalane Bridge), which spans the Woodford River (Irish: Sruth Gráinne), crossing into County Fermanagh where it becomes the A509, continuing on to Enniskillen. The Woodford River is part of the Shannon-Erne Waterway. The A46 (known as the Lough Shore Road) connects Enniskillen and the County Donegal border, becoming the N3 across the border at Belleek, and connecting to Ballyshannon. In Ballyshannon certain road signs have destinations A46 Enniskillen with N3 Dublin with the requisite single arrow pointing in the same direction.


During The Troubles in Northern Ireland, the border crossing at Aghalane Bridge, which spanned the Woodford River (Irish: Sruth Gráinne) just north of Belturbet, was closed. Aghalane Bridge crossed from County Cavan into County Fermanagh. The bridge was targeted by Loyalist paramilitaries and finally left impassable in 1973. The shortest route was along the N87 and A32 via Swanlinbar. The crossing was reopened in 1999 when a new bridge, named after US Senator George Mitchell, was built beside the old Aghalane Bridge.[1]

N3 upgrade[edit]

The National Roads Authority in conjunction with Cavan and Donegal County Councils plan major improvements to the N3 route in Ulster.

A 6.7 kilometre bypass of the village of Belturbet in Co. Cavan was partially opened to traffic on 2 August 2013, and the entire section including a bridge over the River Erne was opened in December 2013.[2][3][4]

M3 motorway[edit]

M3 motorway shield}}
M3 motorway
Mótarbhealach M3
N15 roadN16 roadSligoN17 roadN26 roadN5 roadN4 roadN5 roadLongfordWestportN17 roadGalwayM6 motorwayN18 roadM18 motorwayLimerickM7 motorwayM20 motorwayN24 roadN21 roadTraleeN20 roadM8 motorwayN22 roadCorkLondonderry/DerryLondonderry/DerryN13 roadN14 roadN13 roadN15 roadArmaghBelfastBelfastN2 roadN3 roadN4 roadM1 motorwayM3 motorwayM4 motorwayDublinN7 roadM7 motorwayN11 roadM9 motorwayKilkennyM11 motorwayN10 roadN11 roadN24 roadM9 motorwayN30 roadN25 roadN25 roadWaterfordN25 roadM3 motorway (Ireland).png
About this image

Mano cursor.svg Clickable image
Route information
Part of IRL N3.svg
Length51 km (32 mi)
HistoryCompleted in 2010
Major junctions
FromMulhuddart, County Dublin
Major intersectionsMotorway Exit 9 Ireland.PNG IRL N51.svg
Motorway Exit 11 Ireland.PNG IRL N52.svg
ToKells, County Meath
Dunboyne, Dunshaughlin, Navan, Kells
Highway system

Part of the old N3 route has been bypassed by the construction of 51 kilometres of new motorway. This stretch of motorway, designated M3, was opened on 4 June 2010. The M3 begins near the end of the dual carriageway outside Clonee and terminates south west of Kells just before the N52. The works were carried out by a joint venture of Ferrovial and SIAC (a local contractor).[5]

The construction scheme did not terminate at this point as a new realigned N3 2+2 Non Motorway section continued from the end of the Motorway past Kells before terminating near the County Cavan border. The overall scheme also included the N52 Kells northern bypass. Since completion, the M3 now bypasses Dunshaughlin, Navan, and Kells along with Cavan which was bypassed much earlier.


The motorway was contested because the route passes near the Hill of Tara and through the archaeologically rich Tara-Skryne valley or Gabhra.[6] The planned route corridor was approved by An Bord Pleanála (Ireland's planning appeals board) in August 2003.[7][8]

Motorway reclassification[edit]

On 30 September 2008, the Department of Transport announced the second round of proposed motorway reclassifications under the Roads Act 2007. A short section of the existing dual-carriageway N3 bypassing Clonee, from northwest of Mulhuddart to the start of the M3 toll motorway scheme, is affected by this. Following a public consultation process, on 10 July 2009 the Minister for Transport, Noel Dempsey, made a Statutory Instrument reclassifying this section of the N3 as motorway effective from 28 August 2009.[9] It was the first section of M3 to come into being.

Motorway project details[edit]

  • The most expensive single contract road project ever undertaken in Ireland coming in at approximately €650 million according to SIAC.
  • It is tolled at two locations, one point north of Navan and another point between Dunshaughlin and Clonee for 45 years running from 2007. The Government have the option to buy out this contract at any time. The price level of tolls are controlled by the Board of the NRA and they can reduce, increase or remove the tolls as they see appropriate. Should they lower the tolls on the M3 the government would have to make up the difference of what is owed yearly to Eurolink M3 Ltd through tax revenue.
  • An expected minimum traffic level, growing year-on-year, was agreed as part of the contract, with "Variable Operational Payments" made in lieu of toll revenue to Eurolink M3 if this figure was not reached. These payments were made every year from opening until 2019, with traffic below predicted levels; but it is now expected that no further payments will be required due to traffic growth [10]
  • It is the longest single road project ever to be constructed in Ireland including nearly 100 kilometres of new or upgraded road including 49 km of new M3, 10 km of new N3, 20 km of new link roads and interchanges, and approximately 15 kilometres of local road improvements, footpaths, cycle lanes and new bridges.
  • It was originally planned to open in 2006.
  • An Bord Pleanála initially approved the project on 22 August 2003. Exactly 4 years later, on 22 August 2007, they directed that the excavation of the Lismullin monument did not require fresh planning approval.


M3 reduced motorway IE.png (in planning)
Northbound exit Junction Southbound exit
M50 motorway Motorway Exit 6 Ireland.PNG: Dublin Port, Bray and all other routes (M50) Motorway Exit 1 Ireland.png M50 motorway Motorway Exit 6 Ireland.PNG: Dublin Port, Bray and all other routes (M50)
Blanchardstown Village, Ballycoolin Motorway Exit 2 Ireland.png No Exit
Blanchardstown Centre, Tyrrellstown, Mulhuddart Motorway Exit 3 Ireland.PNG Blanchardstown Centre, Tyrrellstown, Mulhuddart
Clonee, Damastown Motorway Exit 4 Ireland.PNG End of motorway
M3 reduced motorway IE.png
Northbound exit Junction Southbound exit
Start of motorway Motorway Exit 4 Ireland.PNG Clonee, Damastown
Pace Interchange: Dunboyne, Trim (R154), Ratoath (R155) Motorway Exit 5 Ireland.PNG Pace Interchange: Dunboyne, Trim (R154), Ratoath (R155)
Ireland Road Toll Symbol.png
Dunshaughlin, Kilcock Motorway Exit 6 Ireland.PNG Dunshaughlin, Kilcock
Skryne (R147), Johnstown Motorway Exit 7 Ireland.PNG Skryne (R147), Kilmessan
Navan (South) Motorway Exit 8 Ireland.PNG Navan (South)
Navan (North), Delvin, Athboy (N51) Motorway Exit 9 Ireland.PNG Navan (North), Delvin, Athboy (N51)
Ireland Road Toll Symbol.png
Kells N52 Motorway Exit 10 Ireland.PNG Kells N52
End of motorway Start of motorway
IRL N3.svg
Northbound exit Junction Southbound exit
Drumbaragh (R163) Motorway Exit 11 Ireland.PNG Drumbaragh (R163)
Derver Motorway Exit 12 Ireland.PNG Derver
End of Dual Carriageway Start of Dual Carriageway

See also[edit]


  1. ^ "A bridge to close the gap and open up a town". Irish Times. Archived from the original on 20 September 2020. Retrieved 2 August 2019.
  2. ^ "Part of N3 Belturbet bypass opens". Northern Sound. Archived from the original on 2 April 2015. Retrieved 9 August 2013.
  3. ^ "N3 Belturbet Bypass". National Roads Authority. Archived from the original on 7 May 2013. Retrieved 9 August 2013.
  4. ^ "N3 Belturbet Bypass Complete with Opening of Bridge" (Press release). National Roads Authority. Archived from the original on 2 April 2015. Retrieved 5 March 2015.
  5. ^ "State paid €2m in 2015 to privately run tolled motorway". Irish Times. 28 October 2016. Archived from the original on 26 April 2017. Retrieved 1 November 2018.
  6. ^ Conor Newman (2015) ‘In the way of development: Tara, the M3 and the Celtic Tiger’, in Meade, R. and Dukelow, F. (eds.) Defining Events: Power, resistance and identity in twenty-first century Ireland, Manchester: Manchester University Press, 32-50.
  7. ^ Eileen Battersby (26 May 2007). "Is nothing sacred?". The Irish Times.
  8. ^ Glenn Frankel (22 January 2005). "In Ireland, Commuters vs. Kings". The Washington Post. p. A01. Archived from the original on 13 December 2016. Retrieved 14 June 2007.
  9. ^ Dempsey, Noel (2 July 2009). "ROADS ACT 2007 (DECLARATION OF MOTORWAYS) ORDER 2009" (PDF). Archived from the original (PDF) on 15 June 2011. Retrieved 13 July 2009.
  10. ^ "Statement to the Public Accounts Committee: Michael Nolan, Chief Executive, Transport Infrastructure Ireland (TII)" (PDF). Public Accounts Committee. 22 March 2018. Archived from the original (PDF) on 4 May 2018.

External links[edit]