S2S Cycleway & Footway Interim
Works (Bull Road to Causeway Road)
Presentation to Elected Members
11th November 2015
S2S Cycleway & Footway Interim Works 1

Cycleway
and
Footpaths
Flood
Defence
New
Watermain
S2S
Interim
scheme
OVERVIEW OF THE SCHEME
2
Part 8 Planning Approval
May 2013

BENEFITS OF COMBINING SCHEMES
3
Cycleway
Required New
Sections of
Seawall
New watermain laid
during excavation
Sea Defence
Element Added to
Seawalls
Results in Greater
Efficiency in
Planning / Design
/ Procurement
Less Disruption to the SAC /
SPA and Residents
Better Value
for Money

Western Carriageway (St. Anne’s Park/Properties side)
• Kerb realignment and footpath works on the western side.
Eastern Carriageway (Seaward Side)
• 2km of cycle and pedestrians facilities on the eastern side of the existing
carriageway (4.0m wide two-way cycle track and 2m wide concrete footpath);
• Improved flood defences along route and two new sections of retaining wall and
works to improve existing seawall;
• Proposed services include improved drainage system, watermain and upgraded
public lighting.
Overall
• Streetscape improvement – new road surface, footpaths, traffic signals, cycle track and
upgraded public lighting throughout the scheme;
• Renovation of Dollymount Tram Shelter;
• Enlarged and upgraded public car park at St. Anne’s Park;
• Estimated Program Duration: 16+ months;
• Projected completion date: Q4 2016.
Overview of Scheme
Missing link in an overall 8km cycle track around North Dublin Bay
4

Public Consultation Undertaken
Advertised:
- Dublin City Council
website
- Irish Times Fri 14th
Dec 2012.
- 14 Site Notices
Erected
Plans and particulars
available for public
inspection for a 6 week
period up to 4th February
2013 at :
•Dublin City Council, Public
Counter, Planning Department.
•Raheny Library, Howth Road.
Presented to the
North Central Area
Committee:
- 17th September 2012
- 19th November 2012
5

Public Consultation Undertaken
Public information Meeting:
- 15th January 2013 at 7.30 p.m.
in Belgrove Girls School Hall.
Hosted by the Clontarf Residents
Association and attended by circa
180 people.
Engineers present with drawings
of scheme to answer questions
from members of the public.
Follow-up meeting:
- 10th May 2013 in Northside
Civic Centre, Coolock.
Engineers present and dealt
with any additional or new
queries that had not been
addressed in the consultation
process.
Planning
Approval
13th May
2013.
6

7

TYPICAL CROSS-SECTION OF SCHEME
8

TYPICAL CROSS-SECTION OF SCHEME
9

UNUSED SPACE OVERLOOKING DUBLIN BAY
10

RECLAIMING AND REUSING SPACE
11

AMENITY IMPROVEMENTS
Improved
Access along
Shoreline
Tourism &
Recreation
Renovation of
Tram Shelter
12

STREETSCAPE ENVIRONMENT IMPROVEMENTS
Energy
Efficient LED
Lighting
Reduced
Noise
Pollution
Vulnerable
Road Users
13

ST ANNE’S PARK
NEW QUADRANT ENTRANCE DESIGN
IMPROVE VIEW AND ACCESS TO TREE OF LIFE SCULPTURE
- SCULPTURE RECOMMENCING SPRING 2016
14

PARKING PROVISIONS
COMPENSATORY PARKING AT WOODEN BRIDGE
DUE TO LOSS OF PARKING ON CARRIAGWAY
15

PARKING PROVISIONS
• INCREASE IN PARKING SPACES FROM BAY
RESTAURANT UP TO DOLLYMOUNT AVENUE
• REMOVAL OF DOUBLE YELLOW ON CARRIAGEWAY
AND PART OF DOLLYMOUNT AVENUE SIDE ROAD
16

PARKING PROVISIONS
• UPGRADE OF ST. ANNES PARK CAR PARK
• NEW STREET PARKING PROVIDED
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CURRENTLY UNDER CONSTRUCTIONFOOTPATH / CYCLEWAY & ROAD PAVEMENT STILL TO BE CONSTRUCTED
SEA WALL CONSTRUCTION
18

• CURRENTLY UNDER CONSTRUCTION
• UNFINISHED ARTICLE
• WALL FINISH OPTIONS UNDER REVIEW
SEA WALL CONSTRUCTION
19

• CURRENTLY UNDER CONSTRUCTION
• UNFINISHED ARTICLE
• WALL FINISH OPTIONS UNDER REVIEW
SEA WALL CONSTRUCTION
20

• CURRENTLY UNDER CONSTRUCTION
• UNFINISHED ARTICLE
• WALL FINISH OPTIONS UNDER REVIEW
SEA WALL CONSTRUCTION
21

• CURRENTLY UNDER CONSTRUCTION
• UNFINISHED ARTICLE
• WALL FINISH OPTIONS UNDER REVIEW
SEA WALL CONSTRUCTION
22

• CURRENTLY UNDER CONSTRUCTION
• UNFINISHED ARTICLE
• WALL FINISH OPTIONS UNDER REVIEW
SEA WALL CONSTRUCTION
23

• CURRENTLY UNDER CONSTRUCTION
• UNFINISHED ARTICLE
• WALL FINISH OPTIONS UNDER REVIEW
SEA WALL CONSTRUCTION
24

Proposed Sea Wall Finishes
Proposed wall finishes are as follows:
• At sections of poured concrete wall
– Smooth F4 concrete finish with new coping.
• At all other sections of wall (both where existing wall is rebuilt or raised,
and where new masonry wall is built)
– Ready mixed smooth render finish with new coping.
• Options currently being looked at to amend design to improve aesthetics
of the newly completed wall.
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Wall Heights between Junctions along Route
Wall height adjustments are as follows:
• Bull Island Junction to Seafield Road East Junction: Level adjustment of up to 276mm (11
inches). First 25m no level change. New average wall height = 540mm (21 inches).
• Seafield Road East Junction to Dollymount Park Junction: Level adjustment up to 120mm
(5 inches) and new wall construction. New average wall height = 580mm (23 inches).
• Dollymount Park Junction to Doyle’s Lane Junction: New wall construction to match
existing wall heights. New average wall height = 690mm (27 inches).
• Doyle’s Lane Junction to Dollymount Avenue Junction: New wall construction for 55
metres to match existing levels, no level adjustment to retained wall. New average wall
height = 450mm (18 inches).
• Dollymount Avenue Junction to The Oaks Junction: Wall level relatively unchanged with
new coping to be installed. New average wall height = 700mm (28 inches) with
maximum wall height = 975mm (39 inches) – same as existing.
• The Oaks Junction to Mount Prospect Avenue Junction: No level change. New average
wall height = 800mm (32 inches).
• Mount Prospect Avenue Junction – Naniken Stream: Level adjustment of 450mm-
690mm (18-27 inches). New average wall height = 840mm (33 inches) with maximum
wall height = 1,138mm (45 inches) including 75mm (3 inch) coping.
• Note: the section of wall just south of Mount Prospect Avenue which is not being adjusted is currently at a height
up to 975mm (38.4 inches). The max height of our current wall north of this is 1,063mm (42 inches) excluding
coping, which would be 1,138mm (45 inches) allowing for a 75mm (3 inch) coping.
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• TIMBER BATTENS SET OUT ON SITE
• BLUE SPRAY MARK = FINISHED FOOTPATH LEVEL
• TOP OF BATTEN = COMPETED WALL HEIGHT
SEA WALL HEIGHT
27

SEA WALL HEIGHT
Opposite St. Anne's Park Lodge
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SEA WALL HEIGHT
Mount Prospect Ave Junction
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• WALL HEIGHT RELATIVE TO COMPLETED FOOTPATH LEVEL
• 300m WITH NO RELATIVE INCREASE
• ILLUSTRATES WALL HIGHER ADJACENT ST. ANNES PARK
• MAX =1.138M
• MIN = 0.410M
SEA WALL HEIGHT
(RELATIVE TO FOOTPATH)
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SEA WALL HEIGHT
(RELATIVE TO FOOTPATH)
31

SEA WALL HEIGHT
(RELATIVE TO FOOTPATH)
32

SEA WALL HEIGHT
(RELATIVE TO FOOTPATH)
33

SEA WALL HEIGHT
(RELATIVE TO FOOTPATH)
34

SEA WALL HEIGHT
(RELATIVE TO FOOTPATH)
35

Howth Road to Baldoyle Road
- Old Sea Wall Height for Comparison
Distance from Howth Road to Baldoyle Road is 2.1km (1.3 miles) – almost
identical in length to this scheme.
Old sea wall is 0.7m (27.6 inches) to 1m (39.4 inches) high along the 2.1km
length.
Depending on the relative road level the wall does restrict views of the foreshore
at times although Howth is clearly visible.
This length of road is much straighter and does not have a bend or camber on the
road like there near the pond at St. Anne’s Park that would restrict views for car
drivers even further.
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Average Wall Height Chart
37
16%
26%
34%
8%
Average Wall Height 0.4m - 0.6m (16 - 24 inches): 16%
Average Wall Height 0.6m - 0.8m (24 – 32 inches): 26%
Average Wall Height 0.8m – 1.0m (32 – 40 inches): 34%
Average Wall Height 1.0m – 1.138m (40 – 45 inches): 8%

• ROAD SURFACE LOWER THAN FOOTPATH LEVELS (AVG. 140mm).
• 150m SECTION ON BEND AT ST. ANNES PARK SUPERELEVATED RESULTING
IN ROAD SURFACE LOWER RELATIVE TO FOOTPATH / WALL (Max = 0.5m).
• 460m SECTION OF ROAD WHERE DRIVER EYE HEIGHT LOWER THAN WALL .
• 33 SECONDS AT 50KPH.
SEA WALL HEIGHT
(RELATIVE TO ROAD SURFACE)
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SAFETY BENEFITS – COLLISION STATISTICS
1996 – 2011: 163 accidents
50% of Serious and Fatal Accidents
involved Pedestrians
39

SAFETY BENEFITS
SAFETY
Reduced
Carriageway
Width
(2 x 3m)
Upgraded
Junctions
along route
Improved
Driver
Behaviour
Reduced
speed limit at
north end
60km/h →
50km/h
Reduced
speeds -
85%ile
currently
57.3km/h
Removal of
Driver/Cyclist
Conflict
40

SAFETY BENEFITS
Reasons for Buildouts:
• Improve visibility and safety for
pedestrians crossing junctions.
• Improve visibility for drivers entering
or exiting side streets.
• Make it easier for visually and mobility
impaired people to cross the junction,
as well as people will child buggies.
• Prevent drivers from parking too close
to corners thereby blocking visibility
for pedestrians and other drivers.
41

Environmental Measures
• Appropriate Assessment carried out for the scheme
• Environmental Clerk of Works appointed by DCC
• Project Ecologist engaged by Contractor
– Environmental Management Plan
– Grassland Management Plan
– Method Statements for Works on Lagoon
– Ongoing environmental monitoring
• Liaison with NPWS and BirdWatch Ireland
• Mitigation Measures Implemented
– Screen erected between Works and Lagoon
– No Lagoon Works during winter to facilitate wintering birds
42

Lowest Road Level
National Standard Tide Flood Level Dublin Bay 3.20m
Associated Wave Height. Dollymount/St. Anne’s Park 3.45m
Global Warming Interim Allowance.
(90mm of which appear to have occurred already) 3.95m
Minimum Safety or Freeboard Allowance. 4.25m
250mm
10”
500mm
20”
300mm
12”
Dollymount Flood Defence Levels
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Impacts of Climate Change
-60
-40
-20
0
20
40
60
80
100
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
MSLinmmODM
Dublin Annual Mean Sea Level 2000 – 2013
(Provisional)
Observed Annual…
44

Bull Island
(Extract from Draft Development Plan Strategic Flood Risk Assessment SFRA)
Flood Zone A Dark Green; no wave action modelled.
Flood Zone B Lighter Green; no wave action modelled.
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