Roads in Northern Ireland

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A1 near Newry

The main roads in Northern Ireland are signed "M"/"A"/"B" as in Great Britain. Whereas the roads in Great Britain are numbered according to a zonal system, there is no available explanation for the allocation of road numbers in Northern Ireland,[1] though their numbering is separate from the system in England, Scotland and Wales.

In Northern Ireland, DfI Roads is responsible for all 25,792 kilometers (16,026 mi) of roads.[2] Road users also have the Highway Code for Northern Ireland, which provides guidance on the legal aspects of driving on Northern Ireland's roads.[3]

Motorways

The most important roads are motorways, designated by the letter "M". The motorway network is focused on Belfast. Legal authority for motorways existed in the Special Roads Act of 1963 similar to that in the Special Roads Act 1949 in Great Britain.[4] The first motorway to open was the M1 motorway, though it did so under temporary powers until the Special Roads Act had been passed.[5] Work on the motorways continued until the 1970s when the oil crisis and The Troubles both intervened causing the abandonment of many schemes.[6] The M3 was the final motorway scheme in Northern Ireland and the United Kingdom in its entirety to open.[7]


Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
M1 Belfast Dungannon Via Lisburn and Craigavon, in the direction of Sligo, Enniskillen and Omagh. The motorway forms the main Dublin-Belfast route until Sprucefield.
M2 Belfast Ballymena In two sections built at different stages, one linking Belfast to Antrim, and the other bypassing Ballymena. The section in between was planned, but never built. Main route out of Belfast to Derry, Coleraine and Larne.
M3 M2 in north Belfast A2 Sydenham Bypass in the east of the city Lagan Bridge
M5 M2 in north Belfast Newtownabbey Forms part of the Belfast-Carrickfergus route.
M12 M1 Craigavon A spur from the M1 near Derrymacash to the centre of Craigavon.
M22 Antrim Randalstown Linking the M2 at Antrim to Randalstown. Forms part of the main road between Belfast and Derry.
A8(M) M2 Ballyhenry A spur from the M2 at Sandyknowes near Glengormley to Corr's Corner Roadabout on the A8 north-west of Newtownabbey. Forms part of the Belfast-Larne route.

"A" roads

The next most important roads are designated with the prefix "A" and a one-, two- or three-digit number.

"B" roads

Less important roads are indicated with the prefix "B" and a one-, two- or three- digit number.

"C" roads

Minor roads can be indicated with the prefix "C" and a one-, two- or three- digit number, though it is very rare to see these marked on signposts or Ordnance Survey maps

E-roads

Though unsignposted, the following Euro Routes include sections of roads in Northern Ireland:

See also

References

  1. ^ "Northern Ireland Assembly – WRITTEN ANSWERS Friday 15 December 2000". Archived from the original on 23 December 2008. Retrieved 19 November 2007.
  2. ^ "Northern Ireland Transport Statistics 2020-2021" (PDF). Northern Ireland Statistics and Research Agency. Archived from the original (PDF) on 15 April 2022. Retrieved 10 May 2023.
  3. ^ "Highway Code for Northern Ireland". Department of Environment. Archived from the original on 3 January 2007. Retrieved 30 March 2010.
  4. ^ "Conceptions and early history of the motorways in Northern Ireland". Motorway Archive. The Motorway Archive Trust. Archived from the original on 11 October 2007. Retrieved 31 December 2007.
  5. ^ "M1 Belfast to Dungannon and M12 to Craigavon". Motorway Archive. The Motorway Archive Trust. Archived from the original on 9 October 2007. Retrieved 31 December 2007.
  6. ^ "Westlink (M1 to M2)". Motorway Archive. The Motorway Archive Trust. Archived from the original on 13 October 2007. Retrieved 31 December 2007.
  7. ^ "M3 Dock Street to Bridge end and Sydenham By-pass". Motorway Archive. The Motorway Archive Trust. Archived from the original on 10 October 2007. Retrieved 31 December 2007.