S2S Presentation to DCC - 11th November 2015

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

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Part 8 Planning Approval May 2013

BENEFITS OF COMBINING SCHEMES

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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

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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

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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.

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TYPICAL CROSS-SECTION OF SCHEME

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TYPICAL CROSS-SECTION OF SCHEME

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UNUSED SPACE OVERLOOKING DUBLIN BAY

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RECLAIMING AND REUSING SPACE

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AMENITY IMPROVEMENTS

Improved Access along Shoreline

Tourism & Recreation

Renovation of Tram Shelter

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STREETSCAPE ENVIRONMENT IMPROVEMENTS

Energy Efficient LED Lighting

Reduced Noise Pollution

Vulnerable Road Users

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ST ANNE’S PARK

NEW QUADRANT ENTRANCE DESIGN

IMPROVE VIEW AND ACCESS TO TREE OF LIFE SCULPTURE - SCULPTURE RECOMMENCING SPRING 2016

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PARKING PROVISIONS

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

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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

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PARKING PROVISIONS

• UPGRADE OF ST. ANNES PARK CAR PARK • NEW STREET PARKING PROVIDED

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CURRENTLY UNDER CONSTRUCTION FOOTPATH / CYCLEWAY & ROAD PAVEMENT STILL TO BE CONSTRUCTED

SEA WALL CONSTRUCTION

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


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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

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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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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

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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

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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

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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.

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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

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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

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MSL

in m

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Dublin Annual Mean Sea Level 2000 – 2013 (Provisional)

Observed Annual …

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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. 45

S2S Presentation to DCC - 11th November 2015

Government & Nonprofit

Transcript of S2S Presentation to DCC - 11th November 2015