The M50 motorway is a C-shaped orbital motorway in Dublin and the busiest motorway in Ireland. The current route was built in various sections over the course of 27 years, from 1983 to 2010. It begins at Dublin Port, running northward through the Dublin Port Tunnel and along a portion of the Airport Motorway. It then turns west at its junction with the M1, circling the northern, western and southern suburbs of Dublin, before merging with the M11 at Shankill in South East Dublin. The road forms part of European route E01.
The island of Ireland, comprising Northern Ireland and the Republic of Ireland, has an extensive network of tens of thousands of kilometres of public roads, usually surfaced. These roads have been developed and modernised over centuries, from trackways suitable only for walkers and horses, to surfaced roads including modern motorways. The major routes were established before Irish independence and consequently take little cognisance of the border other than a change of identification number and street furniture. Northern Ireland has had motorways since 1962, and has a well-developed network of primary, secondary and local routes. The Republic started work on its motorway network in the early 1980s; and historically, the road network there was once somewhat less well developed. However, the Celtic Tiger economic boom and an influx of European Union structural funding, saw national roads and regional roads in the Republic come up to international standard quite quickly. In the mid-1990s, for example, the Republic went from having only a few short sections of motorway to a network of motorways, dual carriageways and other improvements on most major routes as part of a National Development Plan. Road construction in Northern Ireland now tends to proceed at a slower pace than in the Republic, although a number of important bypasses and upgrades to dual carriageway have recently been completed or are about to begin.
The N11 road is a national primary road in Ireland, running for 129 km (80 mi) along the east side of Ireland from Dublin to Wexford. It passes close to Bray, Greystones, Wicklow, Arklow, Gorey, and Enniscorthy. Beyond Wexford, the route continues to Rosslare as the N25. The road forms part of European route E01. As of July 2019 the N11/M11 is of dual carriageway or motorway standard from Dublin as far as Oilgate in County Wexford.
Tullamore is the county town of County Offaly in Ireland. It is on the Grand Canal, in the middle of the county, and is the fourth most populous town in the midlands region with 14,607 inhabitants at the 2016 census.
The N17 road is a national primary road in Ireland, and is part of the Atlantic Corridor route. It begins in County Galway and ends in County Sligo. On 27 September 2017 the southern, Tuam–Galway, section was upgraded to motorway status and designated M17.
The R113 road is a regional road in Ireland. Located in Dublin, it forms a semi-orbital route around the south of the city. As of 2007, clockwise, it starts at the N31 at Temple Hill in Blackrock and ends at a junction with the N4 at Palmerstown.
The N14 road is a national primary road in the Republic of Ireland. The entirety of the route is located in the northwest of Ireland, in County Donegal, connecting Manorcunningham to Lifford in the east. Here it connects to the N15 near the border with Northern Ireland and along the A38 to Strabane in County Tyrone.
The R445 road is a regional road in Ireland. The route is a non-motorway alternative route to the N7/M7 motorway between Naas and Limerick, and at 170 km it is one of the longest regional roads in Ireland. Indeed, much of the route comprises roads that were formerly part of the N7 between the cities, prior to motorway and other bypasses. Some of the R445 route also comprises local link roads to new N7/M7 route sections.
A national secondary road is a category of road in Ireland. These roads form an important part of the national route network but are secondary to the main arterial routes which are classified as national primary roads. National secondary roads are designated with route numbers higher than those used for primary roads, but with the same "N" prefix. Routes N51 and higher are all national secondary roads.
The N52 road is a national secondary road in Ireland. It links the M7 motorway from just south of Nenagh, County Tipperary to the M1 motorway north of Dundalk in County Louth. The route forms a connection between the north east of Ireland and the mid west traversing the midlands. It interchanges with the M6 at Kilbeggan and at Tyrrellspass, the N4 at Mullingar, the N3 at Kells, and the N2 at Ardee before continuing towards Dundalk.
The A428 road is a major road in central and eastern England. It runs between the cities of Coventry and Cambridge by way of the county towns of Northampton and Bedford. Together with the A421,, the eastern section of the A428 forms the route between Cambridge and Oxford. The A428 was formerly part of the main route from Birmingham to Felixstowe before the A14 was fully opened in 1993.
The A421 is an important road for east/west journeys across south central England. Together with the A428, the A43 and A34, it forms the route from Cambridge through Milton Keynes to Oxford. The section between the A1 and the A5 is a national primary route.
The N30 road is a national primary road in Ireland. It connects the N25 road and M11 motorway, providing a link running east-northeast through County Wexford, between New Ross and Enniscorthy. This provides for a more direct national route between the two towns, as the N25 and N11 both run to Wexford town, eastwards from New Ross and southwards from Enniscorthy respectively.
The A6 road in Northern Ireland runs for 71.4 miles (114.9 km) from Belfast to Derry, via County Antrim and County Londonderry. From Belfast to Randalstown the route has been superseded by a motorway. Mostly single carriageway, there are sections of dual carriageway in Antrim town centre and from Randalstown to Toome, including the Toome bypass. In urban and suburban districts of Belfast and Derry the route is single carriageway with 4 lanes. In rural parts, there are numerous climbing lanes along the route. The A6 is one of Northern Ireland's most important arterial routes, as the road runs between its two largest cities and urban areas. Between Randalstown and Derry the road forms part of European route E16.
The N62 road is a national secondary road in Ireland. It links the M6 motorway east of Athlone, County Westmeath with junction 6 of the M8 motorway at Kilnoe near Horse and Jockey in County Tipperary, 96.625 kilometres (60.040 mi) to the south. The route also forms a junction with the M7 motorway south of Roscrea.
The N80 road is a national secondary road in Ireland that runs southeastwards from its junction with the N52 and R443 in the town of Tullamore in County Offaly, to the N30 at Ballynahallin, just north of Enniscorthy in County Wexford, a distance of 114.683 km. Total length is 114.683 km (71.261 mi).
The R772 road is a regional road in Ireland which comprises disconnected sections of road which once formed part of the N11 but which have now been by-passed, joined together by some new road sections and some former local roads.
The R421 road is a regional road in Ireland which runs southwest-northeast from the R445 south of Roscrea to the N52 north of Tullamore. The route also passes through Clareen, Kinnitty and Killurin. The bulk of the route is in County Offaly with small sections in counties Tipperary and Laois. The route is 50 km (31 mi) long.
The R420 road is a regional road in Ireland, which runs northwest-southeast from the R446 near Moate in County Westmeath to the R445 just west of Monasterevin. The road travels through the towns of Clara, Tullamore & Portarlington. The route is 35 km (22 mi) long.
The R730 road is a regional road in County Wexford, Ireland. From its junction with the R702 in Kiltealy it takes a southeasterly route to its junction with the R741 in the centre of Wexford Town, continuing south to Blackhorse to its junction on a roundabout with the N25 Wexford bypass.
