N4 road
Encyclopedia : N : N4 : N4R : N4 road
- In Belgium, the N4 is the old road from Brussels to Arlon, passing Wavre, Namur, Marche-en-Famenne and Bastogne.
 
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| Destinations (E to W) | |
| On route / bypassed / bypassed by M4 | |
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† Inner relief road ‡ Roosky is in County Roscommon, the N4 passes on east bank of the River Shannon, the Leitrim side of the town. | |
The N4 road is a National Primary Route in the Republic of Ireland, running from Dublin to the northwest of Ireland and Sligo Town. The N6 road to Galway diverges from this route after Kinnegad, while the N5 road to Castlebar and Westport diverges at Longford town. The section of the N4 that is motorway standard is designated the M4 motorway.
Road Standard
The road is a dual carriageway from Heuston Station, Dublin to Mullingar (including the motorway section). This section of road intersects with the M50 motorway at Junction 7. The Liffey Valley Shopping Centre is located at this junction. It has three lanes and a bus lane in each direction between the M50 and east of Lucan. The speed limit was initially 40 mph (60 km/h from January 2005) after its upgrade in 1999, despite the quality of the road. In June 2005, the speed limit was increased to 80 km/h. The road becomes a dual carriageway again through Sligo town.M4 Motorway
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| M4 motorway | |
| Length | 34 miles 55 km |
| Direction | East - West |
| Start | Lucan |
| Primary destinations | Leixlip Kilcock Enfield |
| End | Kinnegad |
| Construction dates | 1994 - 2005 |
| Motorways joined | 11 -  M6 motorway |
The section from west of Lucan to west of Kinnegad is now the M4 motorway, also dubbed the Leixlip-Maynooth-Kilcock Bypass (phase 1) and the Kinnegad-Enfield-Kilcock Motorway during its construction. The second section of the M4 opened on 12 December 2005. A toll of €2.50 for cars is charged at a toll plaza near Enfield (thus is it possible to drive on parts of the M4 without having to pay a toll). Eurolink operate this toll scheme, the first in Ireland not operated by NTR plc. Currently NTR plc and Eurolink are in a dispute over Eurolink's failure to accept NTR's EazyPass electronic toll system on the M4.
The bypassed road (formerly the N4), has been reclassified as the R148 road.
Motorway Route
| M4 Motorway
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| Westbound | Junction | Eastbound
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| Start of motorway | 2 | Leixlip, Celbridge R148 | |
| Leixlip West, Celbridge West | 2a | Leixlip West, Celbridge West | |
| Maynooth, Clane, Naas | 3 | Maynooth, Naas | |
| Kilcock, Clane R407 | 8 | Kilcock, Clane R407
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| Toll plaza
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| Enfield, Edenderry R402 | 9 | Enfield, Edenderry R402 | |
| Kinnegad R401 | 10 | Kinnegad R401 | |
| Galway, Athlone N6 | 11 | No exit - traffic joins from M6 | |
| Kinnegad | 12 | Start of motorway regulations | |
There are no junctions 4-7, though it is possible that these numbers will be later re-assigned to the existing junctions 2-3, with these numbers then possibly re-assigned to the Lucan interchange and the yet to be constructed Esker interchange on the N4. Currently, Junction 2a is the only motorway junction number in the Republic of Ireland to have a letter, as it was constructed later between the present junctions 2 and 3. The M4's junction numbering continues on the dual carriageway section of the N4 road, until west of Mullingar.
References
- [S.I. No. 209/1994: ROADS ACT, 1993 (DECLARATION OF NATIONAL ROADS) ORDER, 1994]
- [ROADS ACT, 1993 (CLASSIFICATION OF NATIONAL ROADS) (KILCOCK - KINNEGAD ROUTE) ORDER, 2003]
| National Primary Routes of the Republic of Ireland |
|---|
| N1(M1) - N2 - N3(M3) - N4(M4) - N5 - N6(M6) - N7(M7) - N8(M8) - N9(M9) - N10 - N11(M11) - N12 - N13 - N14 - N15 - N16 - N17 - N18 - N19 - N20 - N21 - N22 - N23 - N24 - N25 - N26 - N27 - N28 - N29 - N30 - N31 - N32 - N33 - M50 |
| Roads in Ireland - National Secondary Routes - Regional Roads |
| See also: National Development Plan, National Roads Authority |
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