The R112 road is a
regional road in south
Dublin, Ireland.[2] It begins at the junction with the
R148 road at
Chapelizod and arcs southeastwards, then eastwards across the middle of south Dublin, ending at the
Mount Merrion junction of the
R138. The road is a single carriageway, with cycle lanes on some stretches. Improvements to the road have been made over the last 10 years, the most significant being at
Dundrum Cross where the road was widened to make room for the new
Luas bridge and Dundrum bypass (
R117 road).
The official description of the R112 from the Roads Act 1993 (Classification of Regional Roads) Order 2012[2] reads:
R112: Chapelizod - Churchtown - Mount Merrion, County Dublin
Between its junction with R148 at Chapelizod Bypass in the city of Dublin and its junction with R138 at Stillorgan Road in the county of Dun Laoghaire — Rathdown via Kylemore Road and Walkinstown Avenue in the city of Dublin: Saint Peters Road, Greentrees Road, Templeville Road and Springfield Avenue, Dodder View Road and Dodder Park Road in the county of South Dublin: Dodder Park Road, Braemor Road, Churchtown Road Upper, Taney Road, Mount Anville Road and Fosters Avenue in the county of Dun Laoghaire — Rathdown.
The R112 is 15.2 kilometres (9.4 mi) long (
map of the road).
Route
The R112 begins at the junction of the
R148 road at
Chapelizod, heading a short distance to the east. It turns south and passes under the R148. The road is known as Kylemore Road at this point.
Continues south through the
R833 (
Ballyfermot Road) roundabout.
Crosses a bridge over the Dublin-Cork railway line.
Major junction with the
R810 (Naas Road). It crosses the
Luas Red Line at this point and is named Walkinstown Avenue.
Shortly after this there is another major junction with the
R110 (Long Mile Road).
Continues southeast through
Walkinstown roundabout where the road connects with the
R819 and
R818. After the roundabout, the road becomes Saint Peter's Road.
Road moves in a more easterly direction and is known as Greentrees Road after the junction with Limekiln Lane.
Road becomes Templeville Road after a roundabout at the junction with Whitehall and Wellington Road. The road crosses the
River Poddle 200m southeast of the Wellington Road roundabout, or 50m northwest of the Grosvenor Road intersection. The presence of the river is not readily evident to passing motorists. Further on, it intersects the
R817 at the Templeville roundabout. The 850m stretch between the Wellington and Templeville roundabouts was a greenfield area which was developed in the 1970s as a connecting road (including new housing) between Greentrees Road and Templeogue College.
After the R137, it becomes Springfield Avenue where it crosses and then follows the winding
River Dodder, with
Bushy Park to the north. The road bridges the
Owendoher River just before the tributary flows into the Dodder.
After a junction with the
R114 (which connects
Terenure to
Rathfarnham at this point) the R112 road becomes the Dodder Park Road, which later becomes the Braemor Road as it passes
Churchtown.
It then passes a junction with
R821 (
Nutgrove Avenue) and Beaumont Avenue and becomes the Upper Churchtown Road before a major junction at
Dundrum, where the road intersects with the
R117 and passes underneath the
Luas bridge on the
Green Line. It also bridges the
Slang or Dundrum River at this point, though the bridge is barely noticeable.
Past Dundrum, the road climbs steeply to
Taney Church, and a T-junction with the
R826, before a decline down to
Goatstown. There, it meets another major junction with the
R825 (Goatstown Road) to the south and
R133 (Lower Kilmacud Road) to the north. The R112 road is known as Taney Road before the junction and Mount Anville Road afterwards.
The Mount Anville Road passes
Deer Park before another steep decline down to a small junction where the road becomes Foster Avenue. The road has
UCD, Belfield to the north and
Mount Merrion to the south before it terminates at a T-junction with the
R138.
An on-street bike lane starts at the Walkinstown roundabout and continues to Templeoge, at the junction of the R137. There, it changes to an off-street bike lane until the junction with the
R114 road, where it switches back to an on-street lane. Following the junction at
Ely Arch, there is an off-street bike lane until the crossroads at Dundrum. After this, only short stretches of the route have on-street bike lanes, though there are plans to add to this route in the proposed Goatstown development plan.
[3]
Parks — Californian Hills Park (Ballyfermot), Walkinstown Avenue Park, Dodder Valley Park (Templeogue),
Bushy Park (Terenure), Deer Park (Mount Merrion)
A feasibility study has explored the idea of running the proposed Luas Line E along the Upper Churchtown Road from the existing Luas Green Line at Dundrum, before turning off to the
R821 road, towards Nutgrove. However, this project is unlikely to proceed soon due to scarce revenue and doubts about the sustainability of the line. Currently, there are plans to upgrade the junction with the R821.[4] The proposed Goatstown development plan is likely to make small changes to the road layout at that section of the route.
Doyle, Joseph W. (2012) [2008]. Ten Dozen Waters: The Rivers and Streams of County Dublin (5th edition). Dublin, Ireland: Rath Eanna Research. pp. 1–50 + iv + map.
ISBN978-0-9566363-4-8.