The A3 is a major road in

Northern Ireland Northern Ireland ( ga, Tuaisceart Éireann ; sco, label= Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is variously described as a country, province or region. Nort ...

. It travels through

County Antrim County Antrim (named after the town of Antrim, ) is one of six counties of Northern Ireland and one of the thirty-two counties of Ireland. Adjoined to the north-east shore of Lough Neagh, the county covers an area of and has a population o ...

County Down County Down () is one of the six counties of Northern Ireland, one of the nine counties of Ulster and one of the traditional thirty-two counties of Ireland. It covers an area of and has a population of 531,665. It borders County Antrim to the ...

County Armagh County Armagh (, named after its county town, Armagh) is one of the six counties of Northern Ireland and one of the traditional thirty-two counties of Ireland. Adjoined to the southern shore of Lough Neagh, the county covers an area of and ha ...

and parts of southern

County Fermanagh County Fermanagh ( ; ) is one of the thirty-two counties of Ireland, one of the nine counties of Ulster and one of the six counties of Northern Ireland. The county covers an area of 1,691 km2 (653 sq mi) and has a population of 61,805 a ...

. The route branches off the A1, and from the start of the route at

Lisburn Lisburn (; ) is a city in Northern Ireland. It is southwest of Belfast city centre, on the River Lagan, which forms the boundary between County Antrim and County Down. First laid out in the 17th century by English and Welsh settlers, with ...

to the border near

Middletown, County Armagh Middletown is a small village and townland in County Armagh, Northern Ireland. It lies near the border with County Monaghan, between Armagh and Monaghan along the A3. It had a population of 237 people (91 households) in the 2011 Census. Geogra ...

, it is a primary route. The A3 is also the designated road number for the sections of the Irish N54 secondary route which lie in Northern Ireland. These sections carry secondary route status.

Route

The A3 begins by proceeding ahead at a crossroads in

city centre, where the A1 veers to the left. It continues through the eastern suburbs of Lisburn before it comes to Junction 9 of the M1, where it intersects with the

A26 A26 or A-26 may refer to: Roads * List of A26 roads Transportation * Douglas A-26 Invader, a light attack bomber built by Douglas * Aero A.26, a Czech reconnaissance aircraft of the 1920s * Focke-Wulf A 26, a German Focke-Wulf aircraft * Blekinge- ...

travelling southwards from Antrim. The A3 carries the course of the A26 through the villages of Moira and

Magheralin Magheralin () is a village and civil parish in County Down, Northern Ireland. It is on the main A3 road between Moira and Lurgan, beside the River Lagan. It had a population of 1,337 people in the 2011 Census. The civil parish of Magheralin c ...

, before the A26 branches off again upon entering

Lurgan Lurgan () is a town in County Armagh, Northern Ireland, near the southern shore of Lough Neagh. Lurgan is about south-west of Belfast and is linked to the city by both the M1 motorway and the Belfast–Dublin railway line. It had a population ...

, heading towards

Banbridge Banbridge ( , ) is a town in County Down, Northern Ireland. It lies on the River Bann and the A1 road (Northern Ireland), A1 road and is named after a bridge built over the River Bann in 1712. It is situated in the Civil parishes in Ireland, c ...

. The A3 continues through the town centre of Lurgan, and becomes

dual carriageway A dual carriageway ( BE) or divided highway ( AE) is a class of highway with carriageways for traffic travelling in opposite directions separated by a central reservation (BrE) or median (AmE). Roads with two or more carriageways which are ...

from the outskirts of Lurgan through a series of roundabouts in what was planned as the new city of

Craigavon Craigavon may refer to: * Craigavon, County Armagh, a planned town in Northern Ireland ** Craigavon Borough Council, 1972–2015 local government area centred on the planned town * Viscount Craigavon, title in the Peerage of the United Kingdom ** ...

. At "Central Roundabout", the A3 veers north-easterly onto "Northway", a single-carriageway by-pass of

Portadown Portadown () is a town in County Armagh, Northern Ireland. The town sits on the River Bann in the north of the county, about southwest of Belfast. It is in the Armagh City, Banbridge and Craigavon Borough Council area and had a population of a ...

. The A3 also meets the A27 from

Craigavon Area Hospital Craigavon Area Hospital ( ga, Ospidéal Cheantar Craigavon) is a teaching hospital in Portadown, Craigavon, County Armagh, Northern Ireland. It serves an estimated 241,000 people from the boroughs/districts of Craigavon, Banbridge, Armagh and ...

at this roundabout. “Northway” was originally planned to be an extension of the M12 into the centre of Craigavon, but like many parts of the planned town, it was not built. Close to Portadown town centre, the A4 branches off towards

Dungannon Dungannon () is a town in County Tyrone, Northern Ireland. It is the second-largest town in the county (after Omagh) and had a population of 14,340 at the 2011 Census. The Dungannon and South Tyrone Borough Council had its headquarters in the ...

and

Maghery Maghery ()Placenames NI
is a small

, and the A3 continues to the city of

Armagh Armagh ( ; ga, Ard Mhacha, , "Macha's height") is the county town of County Armagh and a city in Northern Ireland, as well as a civil parish. It is the ecclesiastical capital of Ireland – the seat of the Archbishops of Armagh, the Pri ...

, bypassing the village of Richhill. On entering Armagh, the road meets a series of other main roads leading to the city along a half-ring road; firstly the A51 from Gilford, then the A28 from

Newry Newry (; ) is a city in Northern Ireland, divided by the Clanrye river in counties Armagh and Down, from Belfast and from Dublin. It had a population of 26,967 in 2011. Newry was founded in 1144 alongside a Cistercian monastery, althoug ...

and the A29 from

Dundalk Dundalk ( ; ga, Dún Dealgan ), meaning "the fort of Dealgan", is the county town (the administrative centre) of County Louth, Ireland. The town is on the Castletown River, which flows into Dundalk Bay on the east coast of Ireland. It is h ...

. It then continues its route through the villages of

Milford Milford may refer to: Place names Canada * Milford (Annapolis), Nova Scotia * Milford (Halifax), Nova Scotia * Milford, Ontario England * Milford, Derbyshire * Milford, Devon, a place in Devon * Milford on Sea, Hampshire * Milford, Shro ...

and Middletown before reaching the border with the

Republic of Ireland Ireland ( ga, Éire ), also known as the Republic of Ireland (), is a country in north-western Europe consisting of 26 of the 32 counties of the island of Ireland. The capital and largest city is Dublin, on the eastern side of the island. A ...

and

County Monaghan County Monaghan ( ; ga, Contae Mhuineacháin) is a county in Ireland. It is in the province of Ulster and is part of Border strategic planning area of the Northern and Western Region. It is named after the town of Monaghan. Monaghan County Cou ...

in the townland of Ardgonnell. The road continues as the N12 to

Monaghan Monaghan ( ; ) is the county town of County Monaghan, Republic of Ireland, Ireland. It also provides the name of its Civil parishes in Ireland, civil parish and Monaghan (barony), barony. The population of the town as of the 2016 census was 7 ...

and then as the N54 towards

Cavan Cavan ( ; ) is the county town of County Cavan in Ireland. The town lies in Ulster, near the border with County Fermanagh in Northern Ireland. The town is bypassed by the main N3 road that links Dublin (to the south) with Enniskillen, Bally ...

. The Monaghan–Cavan road resumes the A3 designation twice, where it enters southeast

Fermanagh Historically, Fermanagh ( ga, Fir Manach), as opposed to the modern County Fermanagh, was a kingdom of Gaelic Ireland, associated geographically with present-day County Fermanagh. ''Fir Manach'' originally referred to a distinct kin group of a ...

: first from the western outskirts of

Clones Clone or Clones or Cloning or Cloned or The Clone may refer to: Places * Clones, County Fermanagh * Clones, County Monaghan, a town in Ireland Biology * Clone (B-cell), a lymphocyte clone, the massive presence of which may indicate a pathologi ...

for two miles, before reverting to the N54 in the

Drummully Drummully or Drumully ( ga, Droim Ailí; "rocky ridge") is an electoral division (ED) in the west of County Monaghan in Ireland. Known as the Sixteen Townlands to locals and as Coleman's Island or the Clonoony salient ; to the security for ...

salient in County Monaghan, part of the Republic; then again for another short stretch where it meets the B533 from

Newtownbutler Newtownbutler or Newtown Butler is a small village in County Fermanagh, Northern Ireland. It is in the southeast corner of the county, near Lough Erne, the border with County Monaghan, and the town of Clones. It is surrounded by small lakes and ...

at a Y-junction at

Wattlebridge Wattlebridge ( Irish: ''Droichead na nGad'' Logainm.ie: Droichead na nGad / Wattlebridge. https://www.logainm.ie/en/130664), sometimes written as Wattle Bridge, is a small hamlet in the south-south-east of County Fermanagh in Northern Ireland. '' ...

before reverting again to the N54 until it meets the N3 at

Butlersbridge Butlersbridge (), also Butler's Bridge, is a village in County Cavan in Ireland, north of Cavan town just off the N3 national primary road. It was previously a through-point on the N3, but was bypassed in 1999. The bridge in the village cro ...

, on the north-western edge of Cavan Town. Whereas the main A3 section from Lisburn to the border near Monaghan is a primary route, the two Fermanagh sections have 'secondary status' as B roads.

Planned developments

At present, the

Department for Regional Development The Department for Infrastructure (DfI, ga, An Roinn Bonneagair; Ulster-Scots: ''Depairment fur Infrastructure'') is a devolved Northern Ireland government department in the Northern Ireland Executive. Up until May 2016, the department wa ...

plan a series of future road schemes for the A3: *A link road through the northern and western areas of

city, with a further link in the southwestern part of the city, construction timetable for after 2015 *Improvements to the junctions on the Northway at Portadown; construction timetabled for after 2015 Roads in Northern Ireland Roads in County Antrim Roads in County Down Roads in County Armagh Roads in County Fermanagh {{Use dmy dates, date=June 2013