List of A roads in Northern Ireland

The following is a list of A roads in Northern Ireland. As of 2023, A roads made up 8.9% of all roads in Northern Ireland.

RoadFromTo Notes A1 BelfastKilleenVia Lisburn and Newry. Forming part of the main route from Belfast to Dublin. Becoming the N1 at the border, joining onto the Southern Irish M1 before Dundalk. A2 Derry NewryNorthern Irish coastal road. Including routes such as Belfast-Bangor, Belfast-Carrickfergus, Newry-Warrenpoint and Derry-Limavady A3 Lisburn Cavan Via Craigavon and Armagh. Becomes the N12 at Middletown until Monaghan, then the N54 to Cavan via southern Fermanagh. A4 Craigavon (Portadown)Belcoo Via Dungannon and Enniskillen. Becomes the N16 at the border towards Sligo. A5 DerryAughnacloy Via Strabane and Omagh. Becomes the N2 after the Aughnacloy at the border towards Dublin. A6 DerryBelfastVia Dungiven, Antrim and Glengormley. A7 CarryduffDownpatrickVia Saintfield. Stemming off the A24, it forms most of the main road from Belfast to Downpatrick. A8 GlengormleyLarneVia Ballynure. Stemming from the A6.A9 - A10Unused A11 Belfast Inner Ring Road A12 Belfast (Broadway)Belfast (York Street)Westlink dual-carriageway in BelfastA13 - A19Unused A20 Belfast (Bridge End)PortaferryVia Dundonald and Newtownards A21 Bangor BallynahinchVia Newtownards and Comber and Ballygowan A22 Dundonald DownpatrickVia Comber, Killinchy and Killyleagh. A23 BelfastBallygowanVia Moneyreagh. A24 Belfast (Cromac Street)CloughVia Carryduff and Ballynahinch. Forms the greater part of the route from Belfast to Newcastle, and Kilkeel. A25 StrangfordAltnamackanVia Downpatrick, Clogh, Rathfriland, Newry and Newtownhamilton. Becomes the R182 at the border and carries on towards Castleblaney. A26 ColeraineBanbridgeVia Coleraine, Ballymena, Antrim, Moira, Craigavon (Lurgan) and Warringstown. A27 NewryCraigavon (Portadown) A28 Newry (Sheepsbridge)AughnacloyVia Markethill, Armagh and Caledon. A29 PortrushBallymacloshaVia Maghera, Cookstown, Dungannon, Armagh, Keady and Newtownhamilton. At the border it becomes the R177 and carries on towards Dundalk. A30 LisburnGlenavy A31 MoneymoreCastledawsonForm part of the route connecting Cookstown to Belfast. A32 Omagh Swanlinbar Via Enniskillen. Becomes the N87 at the border. A33 NewtownbutlerRepublic of Ireland border west of ClonesBecame a portion of a rerouted A34 by the 1970s. A34 MaguiresbridgeClonesVia Lisnaskea and Newtownbutler. Becomes the R183 road at the border A35 IrvinestownPettigoVia Kesh. Becomes the R234 at the border. A36 BallykeelBallyrickardVia Moorfields and Killwaughter. Forms the main route from Larne to Ballymena. A37 (Co. Londonderry)MacosquinLimavadyPart of the Coleraine to Derry route.(North) A37 (Co. Armagh)DundalkCastleblayneyOnly a short stretch of this route actually lies within Northern Ireland. The rest of the route being called the N53.(South) A38 Strabane LiffordLess than a mile lies in Northern Ireland crossing the River Foyle and divides into the N14 to Letterkenny and N15 to Sligo. A39 MaguiresbridgeLisnaskeaBecame a portion of a rerouted A34. A40 Derry city centre CarrigansWest of the River Foyle, becomes the R236 at the border which carries on towards Raphoe.A41Unused A42 Maghera CarnloughVia Portglenone, Ahoghill, Galgorm, Ballymena and Broughshane. A43 BallymenaGlenarriff Via Martinstown. A44 BallycastleA26 north of CloughmillsVia Armoy. A45 GranvilleTamnamoreVia Dungannon and Coalisland A46 Enniskillen BelleekBecomes the N3 at the border which carries on towards Ballyshannon. A47 Enniskillen (Trory)BelleekVia Killadeas, Lisnarick, Kesh, Boa Island and Leggs. A48 NewtownardsDonaghadeeVia Six Road Ends. A49 LisburnBallynahinch A50 Craigavon (Portadown)NewcastleVia Gilford, Banbridge, Katesbridge and Castlewellan. A51 GilfordArmaghVia Tandragee and Hamiltonsbawn. A52 Belfast (Carlisle Circus)CrumlinVia Nutt's Corner. A53 CookstownOrritorDeclassified. A54 Castledawson ColeraineVia Bellaghy and Kilrea. A55 Belfast Outer Ring RoadA56Unused A57 Belfast International Airport BallynureVia Templepatrick and Ballyclare. Forms part of the main route connecting the airport with Belfast City and Larne.A58 - A67Unused A68 High Street, Belfast York Road station, Belfast via Corporation Street; now part of the A2 one-way system. It is unknown why the A68 number was chosen; an A5xx number (which were allocated to Belfast until the A505), the A56 (was and still is the lowest available number) or an A1x number (later allocated to central Belfast roads) would have been more logical.A69 - A75Unused A76M1Craigavon (Lurgan)A77 - A96Unused A97Number appears on 1940s maps; typo for the A37 running through Cullaville.A98Unused A99A3 Edward Street, LurganA26/B3 in LurganMillennium Way; one sign showed "A3", but this is incorrect. A101M1Sprucefield, near Lisburn A211Bridge Street and Newtownards Road in Comber, designated when the A21 Comber Bypass was opened in 2004 A221Bridge Street and Newtownards Road in Comber, designated when the A21 Comber Bypass was opened in 2004. Officially known as A211, but signed as A221. A371Various roads in Limavady town centre, designated when the A37 Limavady Bypass was opened in 2004 A500Donegall Street, BelfastWhitla Street, Belfast The northern section is now part of a rerouted A2 and the southern half unclassified. A501BelfastA30 just east of GlenavyA502Unused A503Donegall Square, BelfastShaftesbury Square, Belfast via Howard Street and Great Victoria Street; former portions of the B38 and B23. Later became part of the A1 one-way system and is now part of the A1 and A11. A504DundonaldNewtownbreda Formerly a section of the B205 before it was upgraded as part of work to give Belfast an outer ring road. Now part of the A55. A505OmaghCookstownVia Mountfield.A506 - A507Unused A508AntrimRathbeg via Belmont Road, Ballycraigy Road and Greystone Road (former B95); the section along Belmont Road is now part of a rerouted A6 and the remainder downgraded to Class II status: Ballycraigy Road is now the B518 and Greystone Road returned to the B95. A509EnniskillenBelturbetBecomes the N3 at the border after Derrylin. A510Belfast (Cromac Street)Ballymacarrett (Albertbridge Road)Formerly numbered as A20.A511Unused A512Old Golf Course link road in West Belfast and North Lisburn A513BallymacashDerriaghyLisburn Feeder Road A514Derry Ring Road (Crescent Link) A515Derry Ring Road (Foyle Bridge and Skeoge Link Road)A516 - A518Unused A519TonaghBallymacashDistributor road in western Lisburn A520BallymacashKnockmoreLink between the A3 and the A519 in Western LisburnA521Unused A522Dublin Road, AntrimBelmont Road, AntrimFormer route of the A6 through Antrim town centre. A523Ballymena Town CentreBallee Roundabout, BallymenaFormer route of the A26 through Ballymena.

References