The section of the old N4 which has been by-passed by the M4 motorway was reclassified R148. The R148 runs from Dublin to Kinnegad in County Westmeath.
The road is 45 km (28 mi) long. It is generally of a very high standard for a regional road, with wide lanes, hard shoulders, and turning bays. It is still heavily used by traffic avoiding the tolled M4 between Kilcock and Kinnegad.
The road was previously categorised as a National Primary route until the opening of the M4 motorway and therefore carried a speed limit of 100 km/h. The speed limit has now been reduced to 80 km/h. The fact that speed limits have reduced, even though traffic is lighter than before, has led some to claim that the limit reduction is simply a cynical attempt to force motorists to use the tolled M4. This argument is perhaps strengthened by the fact that the R148 received a large share of the speed cameras that were rolled out across Irish roads in 2008. However, under the Road Traffic Act 2004,[1] the default speed limit on Irish regional roads is 80 km/h. A section of the road (between Kilcock and Enfield had for safety reasons already been subject to a special speed limit of 50 mph/80 km/h for some years prior to M4's opening in any case.
The route starts (east-west) at Aston Quay in central Dublin. It then runs to Palmerstown where it becomes the N4. It starts again in Lucan, County Dublin at the same grade separated interchange at which the M4 begins. Less than 1 km west it crosses the River Liffey into Leixlip in County Kildare.
The official description of the R148 from the Roads Act 1993 (Classification of Regional Roads) Order 2012[2] reads:
R148: Dublin — Kinnegad, County Westmeath (Part old National Route 4)
Between its junction with R138 at OConnell Bridge in the city of Dublin and its junction with M50 at Palmerstown Upper in the county of South Dublin via Astons Quay, Crampton Quay, Wellington Quay, Essex Quay, Wood Quay, Merchants Quay, Ushers Quay, Ushers Island, Victoria Quay (and via Frank Sherwin Bridge, Wolfe Tone Quay, Sarsfield Quay, Ellis Quay, Arran Quay, Inns Quay, Ormond Quay Upper, Ormond Quay Lower and Bachelors Walk), Kingsbridge, Saint Johns Road West, Con Colbert Road and Chapelizod Bypass in the city of Dublin: and Redcowfarm in the county of South Dublin
and
between its junction with N4 at Cooldrinagh in the county of South Dublin and its junction with M4 at Heathstown in the county of Westmeath via Leixlip Road in the county of South Dublin: Leixlip Bridge at the boundary between the county of South Dublin and the county of Kildare: Main Street in the town of Leixlip; Collinstown, Blakestown; Dublin Road, Main Street and Mill Street in the town of Maynooth; Maws; Harbour Street, Bridge Street (and via New Lane, The Square and New Road) and Church Street at Kilcock; Allen Bridge and Boycestown in the county of Kildare: Harris’s Bridge at the boundary between the county of Kildare and the county of Meath: Johnstown, Innfield Relief Road, Newcastle and Kilmurry in the county of Meath: Blackwater Bridge at the boundary between the county of Meath and the county of Kildare: Ballynadrumny in the county of Kildare: Leinster Bridge at the boundary between the county of Kildare and the county of Meath: Clonard, Ardnamullen, Hardwood and Rossan in the county of Meath: Kinnegad Bridge at the boundary between the County of Meath and the County of Westmeath: Main Street at Kinnegad; and Correllstown in the county of Westmeath.
^S.I. No. 54/2012 — Roads Act 1993 (Classification of Regional Roads) Order 2012 Irish Statute Book. 2012-02-28.
January 06, 2023
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The R148 road is one of Ireland s regional roads which was classified following the opening of a by passed national primary road R148 roadBothar R148Route informationLength45 km 28 mi LocationCountryIrelandPrimarydestinationsCounty Dublin Chapelizod Bypass Lucan leave N4 in interchange with M4 R403 Crosses the River Liffey at Leixlip Bridge County Kildare Leixlip Village Main Street R149 Leixlip R404 West Leixlip Crosses the Royal Canal and the Dublin Sligo railway line at Louisa Bridge West Leixlip R449 East Maynooth R157 Maynooth Main Street R406 R408 and crosses the Lyreen River Kilcock R407 R125 West Kilcock R158 then crosses the Royal Canal and Dublin Sligo railway line West Kilcock connects to the M4 via a link road County Meath Enfield R402 R159 Crosses into Kildare again at Blackwater Bridge County Kildare Moyvalley crosses the Royal Canal and Dublin Sligo railway again R160 Crosses the River Boyne at Leinster Bridge Clonard Kinnegad terminates at the N4 junction where the M4 also terminatesHighway systemRoads in IrelandMotorways Primary Secondary RegionalThe section of the old N4 which has been by passed by the M4 motorway was reclassified R148 The R148 runs from Dublin to Kinnegad in County Westmeath The road is 45 km 28 mi long It is generally of a very high standard for a regional road with wide lanes hard shoulders and turning bays It is still heavily used by traffic avoiding the tolled M4 between Kilcock and Kinnegad The road was previously categorised as a National Primary route until the opening of the M4 motorway and therefore carried a speed limit of 100 km h The speed limit has now been reduced to 80 km h The fact that speed limits have reduced even though traffic is lighter than before has led some to claim that the limit reduction is simply a cynical attempt to force motorists to use the tolled M4 This argument is perhaps strengthened by the fact that the R148 received a large share of the speed cameras that were rolled out across Irish roads in 2008 However under the Road Traffic Act 2004 1 the default speed limit on Irish regional roads is 80 km h A section of the road between Kilcock and Enfield had for safety reasons already been subject to a special speed limit of 50 mph 80 km h for some years prior to M4 s opening in any case R148 east of Kinnegad Clickable imageRoute EditThe route starts east west at Aston Quay in central Dublin It then runs to Palmerstown where it becomes the N4 It starts again in Lucan County Dublin at the same grade separated interchange at which the M4 begins Less than 1 km west it crosses the River Liffey into Leixlip in County Kildare It then passes through Leixlip Maynooth Kilcock Enfield and Clonard before rejoining the N4 west of Kinnegad The official description of the R148 from the Roads Act 1993 Classification of Regional Roads Order 2012 2 reads R148 Dublin Kinnegad County Westmeath Part old National Route 4 Between its junction with R138 at OConnell Bridge in the city of Dublin and its junction with M50 at Palmerstown Upper in the county of South Dublin via Astons Quay Crampton Quay Wellington Quay Essex Quay Wood Quay Merchants Quay Ushers Quay Ushers Island Victoria Quay and via Frank Sherwin Bridge Wolfe Tone Quay Sarsfield Quay Ellis Quay Arran Quay Inns Quay Ormond Quay Upper Ormond Quay Lower and Bachelors Walk Kingsbridge Saint Johns Road West Con Colbert Road and Chapelizod Bypass in the city of Dublin and Redcowfarm in the county of South Dublinand dd dd between its junction with N4 at Cooldrinagh in the county of South Dublin and its junction with M4 at Heathstown in the county of Westmeath via Leixlip Road in the county of South Dublin Leixlip Bridge at the boundary between the county of South Dublin and the county of Kildare Main Street in the town of Leixlip Collinstown Blakestown Dublin Road Main Street and Mill Street in the town of Maynooth Maws Harbour Street Bridge Street and via New Lane The Square and New Road and Church Street at Kilcock Allen Bridge and Boycestown in the county of Kildare Harris s Bridge at the boundary between the county of Kildare and the county of Meath Johnstown Innfield Relief Road Newcastle and Kilmurry in the county of Meath Blackwater Bridge at the boundary between the county of Meath and the county of Kildare Ballynadrumny in the county of Kildare Leinster Bridge at the boundary between the county of Kildare and the county of Meath Clonard Ardnamullen Hardwood and Rossan in the county of Meath Kinnegad Bridge at the boundary between the County of Meath and the County of Westmeath Main Street at Kinnegad and Correllstown in the county of Westmeath See also EditRoads in Ireland National primary road National secondary roadReferences EditRoads Act 1993 Classification of Regional Roads Order 2006 Department of Transport Book eISB electronic Irish Statute electronic Irish Statute Book eISB www irishstatutebook ie S I No 54 2012 Roads Act 1993 Classification of Regional Roads Order 2012 Irish Statute Book 2012 02 28 Retrieved from https en wikipedia org w index php title R148 road Ireland amp oldid 1085678410, wikipedia, wiki, book, books, library,
