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M11 - Arklow to Rathnew
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This is back from 2004!
ABP 21 CH 2145 /ER27.ER2032
http://www.pleanala.ie/casenum/CH2145.htmGeometry – Main Alignment (Horizontal and Vertical)
For the purpose of description the proposed route has been divided into two
sections as follows:
o the southern section from Arklow Bypass to Kilmurry North, and
o the northern section from Kilmurry North to Ballinaclogh.
Arklow Bypass to Kilmurry North
The proposed route alignment commences at the north end of the Arklow
Bypass, at a point where the dual carriageway starts to taper back towards a
single carriageway cross section. Between Arklow Bypass and Scratenagh the
new dual carriageway will be constructed to overlie the existing N11 single
carriageway with additional widening occurring to the eastern side to avoid
residential and industrial property located to the west. The proposed route
descends towards Scratenagh Cross Roads where direct access to the N11 from
the L6177 and L6674 local roads will be closed off.
A new overbridge is to be located approximately 300m north of Scratenagh
Cross Roads to allow local traffic from the L6177 and L6674 county roads to
cross the dual carriageway. An all-purpose local access road, to be designated
as the R772, will be provided on the western side of the N11 from Ballinaskea at
the north end of Arklow Bypass to Scratenagh and the proposed overbridge.
Continuing north of Scratenagh overbridge the proposed alignment sweeps
across to the western side of the existing N11 to avoid direct impact on
residential, agricultural and industrial property located adjacent to the eastern
edge of the N11 at Clonpadden and Cronakip. The existing N11 carriageway will
be retained for use as a local all-purpose access road between Scratenagh
overbridge and the proposed grade separated interchange at Jack White’s Cross
Roads. This will allow access to be provided to the various properties adjacent
to the east side of the existing N11. The proposed dual carriageway is located
close to existing ground level with minimal cut and fill to avoid potential problems
associated with drainage from large cuttings or visual intrusion from large
embankments.
As the proposed alignment approaches Jack White’s Cross Roads, it rises on an
embankment to allow an underbridge to be constructed as part of the grade
separated interchange. This allows the roundabouts either side of the proposed
alignment to be constructed at existing ground level and the side road
21 CH 2145 /ER27.ER2032 An Bord Pleanála Page 6 of 60
connections to be accommodated. Slip roads allow full access on and off the
proposed dual carriageway for local traffic and also for tourist traffic.
North of the interchange the proposed vertical alignment descends back down to
existing ground level and horizontally it closes back onto the existing N11 as they
both sweep towards Togher. South of Togher, the dual carriageway overlies part
of the existing N11 and widens along its western edge. The proposed alignment
sits in the valley adjacent to the existing N11, part of which is retained as a local
all-purpose access road.
An overbridge is proposed at Kilmurry North to allow local access over the dual
carriageway and to the interchange at Jack White’s Cross Roads. The overbridge
links two small roundabouts, which are located on the new R772 all-purpose
local access road. The eastern roundabout has a new realigned section of the
L5660 to Ballyclogh North. The western roundabout connects the overbridge, a
realigned section of the L95114 and a section of new link road to connect to the
former N11 near the Ballyhara junction.
Kilmurry North to Ballinaclogh
From Kilmurry North the proposed alignment continues north while the existing
N11 sweeps northwest towards Ballyhara. An existing residential property at
CH 8+400 requires to be demolished on the west side of the N11 at Kilmurry
North in order to avoid further impacts on residential property to the east and also
to minimise land severance effects.
The proposed alignment rises on embankment on the approach to the crossing
of the existing N11. An underbridge on the L5664 to Kilbride and on the existing
N11 just north of Ballinacor East will retain local access below the dual
carriageway. The alignment passes across the N11 between the local cemetery
and Lil Doyle’s Public House at Ballinacor East, and continues north west off-line
from the existing N11 towards Kilboy.
Crossing open farmland on alternating cutting and embankment, the dual
carriageway crosses the L5158 at Kilboy and the L1157 at Breagura. These side
roads would be retained using underbridges for local access. The topography of
the existing ground and steep gradient of the Kilboy road prevents the use of
overbridges at these locations. A tributary of the Potter’s River runs alongside the
L1157. The topography of the existing ground eliminates the possibility of
realigning this tributary away from the site of the Breagura Underbridge and
consequently this underbridge will accommodate both the L1157 and the
tributary of the Potter’s River.
Continuing north the proposed alignment sweeps northeast on a right hand curve
to rejoin the corridor of the existing N11 at Ballinameesda Upper. The Potter’s
River is crossed at CH 11+800, the river will be re-aligned in this vicinity in order
that a perpendicular river crossing is achieved thereby shortening the length of
culvert structure. Thereafter the alignment follows the line to the west of the
existing N11 carriageway.
From Coolacork to Roscath the proposed dual carriageway alignment runs
parallel to the west side of the existing N11 to minimise agricultural landtake. As
21 CH 2145 /ER27.ER2032 An Bord Pleanála Page 7 of 60
it approaches Roscath the vertical alignment enters a cutting, which will reduce
visual intrusion and the effects of traffic noise on the adjacent farm properties.
As it passes Roscath across open farmland the alignment continues parallel to
the N11 at existing ground level. The proposed culvert for the Three Mile Water
river is crossed at CH14+300. The dualled N11 crosses the L1113 Coolbeg
county road and then enters a cutting through the disused quarry area north west
of the N11/R751 Beehive junction. Continuing north the alignment closes on the
existing N11 and ties into the dual carriageway Newtownmountkennedy to
Ballynabarny road improvement at Ballinaclogh.
A grade separated interchange is proposed adjacent to the N11/R751 Beehive
junction.
The existing N11 is retained to the south of the proposed interchange and
connected to its eastern roundabout to allow full access to the dual carriageway
for local traffic.
Junctions and Grade Separated Interchanges
The junction strategy restricts access to the dual carriageway to the junctions
described below. These junctions provide linkage between the N11 Rathnew to
Arklow Road Improvement and the local road network. The strategy reduces the
number of traffic conflict points to enhance the safety of road users. All other
local roads are grade separated from the dual carriageway or realigned and do
not have direct access to it. Similarly direct private access shall not be permitted
to the dual carriageway with the exception of a single left on/left off gated priority
junction access to forest land owned by Coillte. Access to private properties has
been maintained from the local road network and by the provision of
accommodation roads and underpasses.
The proposed junctions on the dual carriageway are therefore restricted to the
following locations:
o grade separated interchange west of Jack White’s Cross Roads
o grade separated interchange west of the Beehive junction
o left on/left off gated priority junction access to Coillte lands at Chainage
12+550.
Ancillary Roads
Regional and Local Roads
The proposed road development necessitates the realignment or crossing of a
number of Regional and Local Roads in order that they can be integrated into the
proposed local R772 all-purpose road network, and their existing junctions with
the N11 can be closed off to improve road safety. Other than the junctions
described in the previous section there will be no access provided between these
roads and the dualled N11.
It is proposed to provide a local all-purpose road from Ballymoyle at the southern
limit of the proposed road development to Ballinaclogh near to the northern limit.
This road will be designated the R772 Regional Road and will utilise significant
lengths of the existing N11 to provide a complete local road along the length of
the proposed road development. The R772 will provide access to properties,
21 CH 2145 /ER27.ER2032 An Bord Pleanála Page 8 of 60
businesses, farms and fields, and will allow direct access to the N11 to be closed
off to improve road safety. The all purpose road will also allow local traffic on the
R772, and strategic traffic on the dual carriageway N11, to be kept separate
which will further improve road safety. The R772 will provide access to and from
the dual carriageway via the new grade separated interchanges at Jack White’s
Cross Roads and The Beehive junction.
In order to further improve road safety on the local all-purpose road it is proposed
to standardise the cross section where possible to provide a six metre wide
single carriageway with one metre wide hardstrips, this will necessitate the
breaking up and landscaping of some redundant areas of the existing N11
carriageway.
Accesses
There are an abundance of junctions, field gates and private entrances on the
existing route which increase the potential for road accidents. This proposed road
development will eliminate right turn crossings of the opposing traffic flow on the
N11 through the use of a closed central median and grade separated
interchanges. There are approximately 90 direct accesses excluding field
accesses onto the single carriageway N11 within the limits of the proposed road
development. Excluding the slip roads of the two proposed grade separated
interchanges, the two public lay-bys and the four Garda observation platforms
there will only be one direct access onto the dualled N11, this being a gated
minor access onto the northbound carriageway for Coillte. This reduction in
potential conflict points will greatly assist in improving road safety on the N11.
Maybe I'll figure out a map from this
Something like this
https://www.google.com/maps/ms?msid=211487821863709886471.0004db99e055b3a88165b&msa=00 -
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