m5 west widening - roads and maritime services€¦ · hammondville. benefits of the widening the...

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SEPTEMBER 2010 ENVIRONMENTAL ASSESSMENT moving people, goods and the economy M5 West widening Project overview The environmental assessment addresses the proposed widening of the M5 South West Motorway by one additional lane northbound from King Georges Road, Beverly Hills to Camden Valley Way, Prestons and one additional lane eastbound from Camden Valley Way to Fairford Road, Bankstown. The project has been declared critical infrastructure and is being assessed under Part 3A of the Environmental Planning and Assessment Act, 1979. The environmental assessment reviews the potential environmental, economic and social benefits and impacts of the proposed widening and identifies measures to minimise these impacts. The environmental assessment is on display for community comment. Written submissions to the Department of Planning will be received until Friday 29 October 2010. Background In November 2009 the NSW Government announced a proposal to expand the M5 corridor and invited the community to submit their comments. Submissions on the preliminary proposals closed on 12 March, 2010. Over 200 submissions relating to the M5 South West Motorway section of the M5 expansion were received. These submissions helped shape the environmental investigations to ensure the key issues that are important to the community were considered. Why the widening is needed The NSW Government is working to deliver a high quality transport network that meets Sydney’s population, employment and economic needs into the future. The M5 South West Motorway is one of Sydney’s busiest transport corridors and is used by more than 90,000 vehicles every day. It is a key road freight and commuter route and plays an important role in Sydney’s orbital network, linking Western Sydney with the CBD, Sydney Airport and Port Botany. The proposed M5 West widening supports the forecast growth for Sydney’s population, employment and infrastructure. Features of the widening The proposed M5 West widening would ease congestion on the M5 South West Motorway and surrounding roads as well as support the planned residential and employment growth in South West Sydney. It is proposed to: Widen the existing motorway west of Fairford Road to Camden Valley Way generally in the central median from two to three lanes in each direction. Widen the existing M5 South West Motorway west of King Georges Road to Fairford Road by line marking modifications from two to three lanes westbound only. Upgrade three bridge underpasses along the motorway; Queen Street Bridge, Nuwarra Road Bridge and De Meyrick Avenue Bridge. Install 22 new variable message signs on the motorway and critical roads around the motorway. Construct a new motorway control centre at Hammondville. Benefits of the widening The proposed M5 West widening would deliver much needed road capacity along the M5 South West Motorway and deliver the following benefits to the community and road users: Reduce congestion on the motorway and surrounding arterial network. Support Sydney’s long term growth. Improve access between key population hubs, commercial and economic centres such as the Western Sydney Employment Hub. Increase capacity to better service Sydney’s existing and future transport demands. Improve travel times for individuals and businesses reliant on their vehicles for work such as trades people, sales people and delivery companies. Improve traffic management with a new motorway control centre at Hammondville. Improve safety and provide early warning alerts for drivers on the motorway and arterial networks by providing additional variable message signs. RTA/Pub. 10286B Moorefields Road Camden Valley Way Fairford Road Heathcote Road Bankstown Rail Line East Hills Rail Line M 7 M o t o r w a y H u m e H i g h w a y C u m b e r l a n d Kingsgrove Road Marion Street Moorebank Avenue Milperra Road Edgar Street Davies Road Belmore Road Boundary Road The River Road H e n r y L a w s o n D ri v e F 5 F r e e w a y / H u m e H i g h w a y Beec h R o a d Newbridge Road H e n r y L a w s o n D r i v e King G eorges Road Queen Street R a i l L i n e H u me H ig h w a y De Meyrick Ave Canterbu r y Road BELMORE ROSELANDS BANKSTOWN MILPERRA MOOREBANK WATTLE GROVE LIVERPOOL HARGRAVE PARK GLENFIELD PRESTONS MORTDALE PADSTOW EAST HILLS BEVERLY HILLS BANKSTOWN AIRPORT 1 0.5 1.5km 0 M7 M5 M5 East M5 South West Motorway Eastbound widening generally in the median by one lane from Camden Valley Way to Hume Highway Eastbound widening generally in the median by one lane from Moorebank Avenue to Fairford Road Additional westbound lane to be added by line marking modifications on the westbound carriageway from King Georges Road to Fairford Road Eastbound between Fairford Road and King Georges Road will retain existing two lane configuration Westbound widening generally in the median by one lane from Hume Highway to Camden Valley Way Westbound widening generally in the median by one lane from Fairford Road to Moorebank Avenue Georges River Salt Pan Creek Queen Street Bridge upgrading De Meyrick Avenue Bridge underpass upgrading Nuwarra Road Bridge upgrading New Motorway Control Centre M5 West widening project overview N Proposed widening Proposed additional lane by linemarking modifications No widening works Major road Railway line Proposed area for variable message signs (VMS) Recreation area Water Proposed construction compounds Industrial area Bridge underpass upgrading Existing Hammondville Toll Plaza Proposed motorway control centre Legend © Commonwealth of Australia (Geoscience Australia) 2006. The Commonwealth gives no warranty regarding the data’s accuracy, completeness, currency or suitability for any particular purpose. Visit the Geoscience Australia website (www.ga.gov.au) to access the most current version of the data.

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Page 1: M5 West widening - Roads and Maritime Services€¦ · Hammondville. Benefits of the widening The proposed M5 West widening would deliver much needed road capacity along the M5 South

SEPTEMBER 2010 ENVIRONMENTAL ASSESSMENT

moving people, goods and the economy

M5 West widening

Project overview The environmental assessment addresses the proposed widening of the M5 South West Motorway by one additional lane northbound from King Georges Road, Beverly Hills to Camden Valley Way, Prestons and one additional lane eastbound from Camden Valley Way to Fairford Road, Bankstown.

The project has been declared critical infrastructure and is being assessed under Part 3A of the Environmental Planning and Assessment Act, 1979.

The environmental assessment reviews the potential environmental, economic and social benefits and impacts of the proposed widening and identifies measures to minimise these impacts.

The environmental assessment is on display for community comment. Written submissions to the Department of Planning will be received until Friday 29 October 2010.

BackgroundIn November 2009 the NSW Government announced a proposal to expand the M5 corridor and invited the community to submit their comments. Submissions on the preliminary proposals closed on 12 March, 2010.

Over 200 submissions relating to the M5 South West Motorway section of the M5 expansion were received. These submissions helped shape the environmental investigations to ensure the key issues that are important to the community were considered.

Why the widening is neededThe NSW Government is working to deliver a high quality transport network that meets Sydney’s population, employment and economic needs into the future.

The M5 South West Motorway is one of Sydney’s busiest transport corridors and is used by more than 90,000 vehicles every day. It is a key road freight and commuter route and plays an important role in Sydney’s orbital network, linking Western Sydney with the CBD, Sydney Airport and Port Botany.

The proposed M5 West widening supports the forecast growth for Sydney’s population, employment and infrastructure.

Features of the wideningThe proposed M5 West widening would ease congestion on the M5 South West Motorway and surrounding roads as well as support the planned residential and employment growth in South West Sydney. It is proposed to:

•Widen the existing motorway west of Fairford Road to Camden Valley Way generally in the central median from two to three lanes in each direction.

•Widen the existing M5 South West Motorway west of King Georges Road to Fairford Road by line marking modifications from two to three lanes westbound only.

•Upgrade three bridge underpasses along the motorway; Queen Street Bridge, Nuwarra Road Bridge and De Meyrick Avenue Bridge.

• Install 22 new variable message signs on the motorway and critical roads around the motorway.

•Construct a new motorway control centre at Hammondville.

Benefits of the wideningThe proposed M5 West widening would deliver much needed road capacity along the M5 South West Motorway and deliver the following benefits to the community and road users:

•Reduce congestion on the motorway and surrounding arterial network.

•Support Sydney’s long term growth.

• Improve access between key population hubs, commercial and economic centres such as the Western Sydney Employment Hub.

• Increase capacity to better service Sydney’s existing and future transport demands.

• Improve travel times for individuals and businesses reliant on their vehicles for work such as trades people, sales people and delivery companies.

• Improve traffic management with a new motorway control centre at Hammondville.

• Improve safety and provide early warning alerts for drivers on the motorway and arterial networks by providing additional variable message signs.

RTA/Pub. 10286B

Princ

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ighway

PresidentAvenue

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Moorefields Road

Camden Valley Way

Fair

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Heathcote Road

Bankstown Rail Lin

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East Hills Rail Line

M7 Motorway

Hume H

ighway

Cumbe

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Botany Road

Stoney Creek Road

Kingsgrove

Road

BexleyR

oad

Marsh S

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Unwins

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Bayview Avenue

KendrickPark

Cahill Park

Tempe reserve

Kogarah Golf Course

Barton Park

Wollongong

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Milperra Road Edga

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Airport Drive

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Hume Highway

DeMeyrick

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Canterbury Road

PORT BOTANY

CANTERBURY

KOGARAH

BOTANYBAY

MARRICKVILLE

TEMPE

MASCOT

ZETLAND

BELMORE

SYDNEYAIRPORT

ROSELANDS

BANKSTOWN

MILPERRAMOOREBANK

WATTLE GROVE

LIVERPOOL

HARGRAVEPARK

GLENFIELD

PRESTONS

MORTDALE

PADSTOWEAST HILLS

BEVERLYHILLS

BANKSTOWNAIRPORT

10.5 1.5km0

M7

M5

M5 East

M5 South West Motorway

Eastbound widening generally in the median by

one lane from Camden Valley Way to Hume Highway

Eastbound widening generally in the median by one lane from Moorebank Avenue to Fairford Road

Additional westbound lane to be added by line marking

modifications on the westbound carriageway from King Georges

Road to Fairford Road

Eastbound between Fairford Road and

King Georges Road will retain existing

two lane configuration

Westbound widening generally in the median by

one lane from Hume Highway to Camden Valley Way

Westbound widening generally in the median by

one lane from Fairford Road to Moorebank Avenue

Georges River

Sal

t Pan

Cre

ek

Queen StreetBridge upgrading

De Meyrick Avenue Bridge

underpass upgrading

Nuwarra Road Bridge

upgrading New MotorwayControl Centre

M5 West widening project overview

N

Proposed widening

Proposed additional lane by linemarking modifications

No widening works

Major road

Railway line

Proposed area for variable message signs (VMS)

Recreation area

Water

Proposed construction compounds

Industrial area

Bridge underpass upgrading

Existing Hammondville Toll Plaza

Proposed motorway control centre

Legend

© Commonwealth of Australia (Geoscience Australia) 2006.

The Commonwealth gives no warranty regarding the data’s accuracy,

completeness, currency or suitability for any particular purpose.

Visit the Geoscience Australia website (www.ga.gov.au) to access

the most current version of the data.

Page 2: M5 West widening - Roads and Maritime Services€¦ · Hammondville. Benefits of the widening The proposed M5 West widening would deliver much needed road capacity along the M5 South

SEPTEMBER 2010 ENVIRONMENTAL ASSESSMENT

moving people, goods and the economy

M5 West widening

Environmental issues and mitigation measures

The M5 South West Motorway runs in an east-west direction from King Georges Road, Beverly Hills to Camden Valley Way, Prestons.

The project traverses the Georges River Basin, crossing both the Georges River and Salt Pan Creek. The land uses in the surrounding area include low and medium density residential development, commercial and industrial areas, educational institutions, recreational and open space uses including parks, reserves and golf courses.

There are a number of environmental issues associated with the construction and operation of the M5 West widening.

A summary of the key issues and the measures to reduce impacts, for both the construction and operation of the motorway is provided here. Further details are provided in chapters 8 and 9 of the M5 West widening Environmental Assessment, (September 2010).

Traffic and transport issuesConstruction issues •Temporary day and night time lane closures

on the motorway outside of peak travel times.

•Temporary day and night time closures under bridges on local roads.

•A temporary increase in traffic to and from the approximately 10 construction sites.

Managing traffic and transport issues during construction•Keeping the community and road users

informed about changes to traffic conditions on and around the motorway.

•Maintaining the existing capacity of the M5 South West Motorway during peak periods.

•Access plans for each construction site that minimise construction traffic on local roads.

Biodiversity issuesConstruction issues•Protecting the downy wattle (Acacia pubescens)

and endangered vegetation communities including Cumberland Plain woodland, Sydney coastal river-flat forest, and coastal saltmarsh in the vicinity of the proposal.

•Protecting the waterways that cross or are near the motorway, including Georges River and Salt Pan Creek.

•Clearing of approximately nine hectares of planted vegetation along 22 kilometres of road corridor.

• Impacts on local fauna, including the green and golden bell frog (Litoria aurea), due to the clearing of vegetation.

•Temporary disruption to nocturnal species found along the corridor including the large-eared pied bat (Chalinolobus dwyeri), eastern freetail bat (Mormopterus norfolkenis) and the eastern bent-wing bat (Miniopterus orianae oceanenis).

Managing biodiversity issues during construction•Downy wattle and other threatened vegetation

species from the motorway site will be propagated and replanted after construction is completed.

•Water quality in the Georges River and Salt Pan Creek will be managed by locating construction sites at least 100 metres away from any water courses and by capturing water run-off from these sites in sediment basins.

•Environmental induction training for all staff working on the project would include information on the surrounding vegetation, the environmental procedures and contacts in case of environmental emergencies.

•Disturbed areas would be rehabilitated as soon as practicable through progressive landscaping.

During operation•A bush rehabilitation and landscaping plan

would be implemented.

Noise and vibration impactConstruction issues•A temporary increase in day and night time

noise and vibration levels due to:

•Excavation, earthworks and motorway construction.

•Bridge and underpass upgrading work.

• Increases in vehicle movements and construction traffic.

•Construction site activities, particularly where 24 hour operations are planned at Moorebank Avenue, M5/Graham Avenue, Bransgrove Road and Beaconsfield Road.

Operational issues• Increase in noise due to increasing traffic volumes.

Managing noise and vibration impacts during construction•A plan to manage construction noise and

vibration would be developed as part of the construction environmental management plan.

•All construction employees would receive training as part of their environmental inductions (for example ensuring work occurs within approved hours, noise screens are used for mobile plant and equipment, and that equipment is well maintained and not making excessive noise).

•Keeping the community informed about the nature and timing of works.

Managing operational noise impacts•New and improved noise walls.

•Assessing properties and other sensitive receivers for possible architectural treatment.

•Constructing and maintaining a low noise road pavement.

Visual impactConstruction issues•Physical changes to the surrounding environment

caused by the construction site compounds and other temporary structures on the motorway.

•Clearing of existing landscaping in the median strip and replacement of this landscaped median with concrete safety barriers.

•Loss of existing views and the character of the motorway as a green corridor.

Operational issues•Physical changes to surrounding environment

including new electronic information signs, bridge upgrades, changes to retaining walls and noise walls and a new motorway control centre at Hammondville.

Managing visual impacts during construction •Screening construction sites and positioning

temporary offices and equipment storage away from residents.

•Limiting vegetation clearance.

Managing operational visual impacts•Limiting vegetation clearance and implementing

a landscaping and rehabilitation plan.

•Designing a rehabilitation and landscaping plan that maintains the existing character of the motorway.

Other environmental considerationsAs well as key environmental issues there are a number of other environmental issues associated with the project and which are assessed as part of the environmental assessment. These include:

•Geology, solid and water quality.

•Hydrology and flooding.

•Air quality.

•Climate change and greenhouse gases.

•Aboriginal heritage.

•Resources and waste management.

Georges River

Vegetation along the motorway

Motorway near Moorebank

Parkland near the motorway Georges RiverRTA/Pub. 10286C

Page 3: M5 West widening - Roads and Maritime Services€¦ · Hammondville. Benefits of the widening The proposed M5 West widening would deliver much needed road capacity along the M5 South

SEPTEMBER 2010 ENVIRONMENTAL ASSESSMENT

moving people, goods and the economy

M5 West widening

Meeting Sydney’s transport needs The Sydney region currently has a population of 4.3 million people. This is forecast to grow to 6.0 million by 2036.

The NSW Government is working to provide an integrated approach across all modes for transport planning. The M5 West widening is one of many projects identified in the NSW Government’s Metropolitan Strategy (reviewed March 2010) and the Metropolitan Transport Plan – Connecting the City Of Cities (March 2010) to improve the efficiency of Sydney’s transport network. These projects will contribute to achieving sustainable social, economic and environmental outcomes for Sydney into the future.

Why upgrade the M5 South West Motorway?The M5 South West Motorway is one of Sydney’s busiest transport corridors, carrying more than 90,000 vehicles every day. It is an important part of Sydney’s orbital network, linking greater Sydney with the CBD, Sydney Airport and Port Botany.

The motorway is currently operating at capacity during the AM and PM peak. During the day, traffic volumes are almost as high as in peak hours, demonstrating the extent to which business and freight rely on the corridor on weekdays.

Travel demand on the motorway is expected to increase with Sydney’s forecast economic and population growth placing further demand on the corridor. The M5 West widening would improve traffic flow and reduce journey times.

Moving goods and passengersSydney Airport and Port Botany are forecast to double their freight and passenger movements over the next twenty years.

The NSW Government is working to increase the movement of containers to and from Port Botany by rail from 22 per cent in 2008/09 to 40 per cent within the next decade.

However, some freight is simply not suited to rail transport; perishable foods and flowers, small consignments, urgent deliveries and goods destined for businesses close to the port and airport all rely on the flexibility that road transport provides. Up to 1.7 million containers will still rely on road transport to and from the port by 2020. The M5 South West Motorway will need to be able to cater for this demand.

Moving peopleFuture demand for the M5 South West Motorway is expected to increase as population grows in Sydney’s west. The South West Growth Centre is planned to accommodate around 110,000 new homes in the next 30 years. It covers around 17,000 hectares of land (about twice the size of the Bankstown local government area) and will require an extensive transport network to access education, work, recreation and health facilities.

The draft South West Subregional Strategy identifies Liverpool as a centre for population and employment growth over the next 25 to 30 years. Plans are in place to double Liverpool CBD’s 2001 employment figures from over 15,000 to 30,000 by 2031 and to increase the number of homes from 11,180 to 22,000 over the same period.

The M5 South West Motorway will play a key role in supporting this growth.

Moving the economy Sydney contributes 25 percent of Australia’s gross domestic product and employs over 2.2 million of the nation’s workforce.

The population of south west Sydney is expected to reach almost one million people by 2026, a 41 per cent increase on the 2006 population. Employment in the region will see similar growth with an increase of 37 per cent over the same period.

The M5 West widening would enhance the road network in Sydney’s south west by providing better access to the employment hubs in and around the M5 corridor, including to the South West Growth Centre and the Western Sydney Employment Hub.

Forecast increase in jobs for the South West Growth Centre.

2004127,000

2031207,000

200731.9 million

202978.9 million

International and domestic passenger numbers at Sydney Airport

2007471,000

20291,077,000

International and domestic freight tonnages at Sydney Airport

(Source: Sydney Airport Corporation 2009, Sydney Airport Masterplan 2009)

(Source: Sydney Airport Corporation 2009, Sydney Airport Masterplan 2009)

(Source: M5 Transport Corridor Study, May 2009)

(Source: TIDC 2006, South West Rail Link Environmental Assessment)

This map shows traffic volumes along the M5 corridor are almost as high during the day as they are in peak hours, demonstrating the extent to which business and freight rely on the corridor.

0 2 4 6 8 10 12Hour commencing

14 16 18 20 22 24

5000

4000

3000

2000

1000

0

Vehi

cle

num

bers

6am 6pmConstant traffic volume

Tra�c volume hourly pro�le eastbound

145% increase130% increase

65% increase

Hourly traffic volumes eastbound across the M5 corridor

Moving goods

Moving people

Moving passengers

RTA/Pub. 10286D

Page 4: M5 West widening - Roads and Maritime Services€¦ · Hammondville. Benefits of the widening The proposed M5 West widening would deliver much needed road capacity along the M5 South

SEPTEMBER 2010 ENVIRONMENTAL ASSESSMENT

moving people, goods and the economy

M5 West widening

Existing noise wall on the motorway

Visual, urban design and landscapingThe M5 South West Motorway generally runs in an east-west direction from King Georges Road, Beverly Hills to Camden Valley Way, Prestons. The project traverses the Georges River Basin, crossing both the Georges River and Salt Pan Creek. The land uses in the surrounding area include low and medium density residential development, commercial and industrial areas, educational institutions, recreational and open space uses including parks, reserves and golf courses.

A Landscape Character and Visual Impact Assessment report (June 2010) has been prepared as part of the environmental assessment. Refer to Appendix G and chapter 5.2.2 of the M5 West Widening Environmental Assessment (September 2010) for further information.

Urban design and landscaping treatmentsThe urban design and landscaping treatments within the corridor would help achieve the future quality of the corridor and its surrounding areas. The urban design and landscaping treatments would include:

•Extensive landscaping measures to maintain and enhance the vegetated character of the corridor.

•Diversity in landscape treatments at interchanges that reinforce the relationship between the motorway and its various entry and exit points for the motorway driving experience.

•Distinguish the M5 South West Motorway within the Sydney orbital network through a consistent use of treatments for new motorway elements such as noise walls.

•Materials and finishes for new motorway elements that align with those elements already within the corridor.

•Seek to limit the visual intensity of motorway elements relative to the wider vegetated corridor through a consistent and limited colour palette.

What would the new noise walls look like?The design of new walls adjacent to the carriageway would consider a number of designs to reduce the visual impact, such as:

•Mounding to reduce the wall heights.

•Landscape screening such as tree and shrub planting or the use of climbers on the wall.

•Varying the colour, overlapping panels or varying the panel shape where there is limited space for landscape screening.

Where existing noise walls are to be retained, these would be repainted in the new colour palette to match the new walls, where possible.

Cumberland Plain woodland vegetation along the motorway

Overlooking the New Brighton golf course at Moorebank

RTA/Pub. 10286E

Page 5: M5 West widening - Roads and Maritime Services€¦ · Hammondville. Benefits of the widening The proposed M5 West widening would deliver much needed road capacity along the M5 South

SEPTEMBER 2010 ENVIRONMENTAL ASSESSMENT

moving people, goods and the economy

M5 West widening

What to expect during construction

Construction hours and workforceIt is anticipated that the workforce would average 300 workers, peaking at 500 for short periods of time. The workforce would comprise of labourers, plant operators, tradesmen, technicians and supervisors.

Construction works would be scheduled to minimise disruption to road users and local residents along the motorway corridor. Standard construction working hours would be:

•From 7am to 6pm Monday to Friday and

•From 8am to 1pm Saturday.

While the majority of the project could be constructed during these standard hours, a number of construction activities, such as asphalt removal and re-sheeting works, would need to be undertaken at night, subject to obtaining approval from the Department of Environment, Climate Change and Water.

Reasons for working out of standard hours could include safety and to avoid substantial traffic delays on the motorway and surrounding road network.

Existing M5toll plaza

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Note: Project detail shown is indicative only, subject to detailed design

PADSTOW

KINGSGROVE

RIVERWOOD BEVERLYHILLS

LIVERPOOL

CASULA

EDMONDSON PARK

MOOREBANK

WATTLE GROVE

Salt PanCreek

Geo

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s River East

M7 M

otorway

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Highw

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0 0.5 1km

KEYProposed variablemessage sign

Proposed motorwaycontrol centre building

Widening byconstruction

Widening bylane marking

No pavementwidening works

Construction ofnew bridge deck (major)

Construction ofnew bridge deck

Existing M5toll plaza

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Note: Project detail shown is indicative only, subject to detailed design

PADSTOW

KINGSGROVE

RIVERWOOD BEVERLYHILLS

LIVERPOOL

CASULA

EDMONDSON PARK

MOOREBANK

WATTLE GROVE

Salt PanCreek

Geo

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s River East

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otorway

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Highw

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Heathcote Road

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Camden ValleyWay Be

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De MeyrickAvenue

Nuw

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0 0.5 1km

KEYProposed variablemessage sign

Proposed motorwaycontrol centre building

Widening byconstruction

Widening bylane marking

No pavementwidening works

Construction ofnew bridge deck (major)

Construction ofnew bridge deck

N

N

Traffic managementThroughout construction motorists and the community would experience some changes to traffic flow on the motorway and local roads around the bridge underpasses at Nuwarra Road, Queen Street and De Meyrick Avenue Bridges. Some of these changes would include:

•Temporary lane closures on the motorway during the night to complete resurfacing and line marking works.

•Temporary reductions to speed limits on sections of the motorway where works are underway.

•Changed traffic conditions and temporary diversions.

• Installation of temporary concrete safety barriers separating work zones from traffic lanes and cyclist access.

Further detailed information about construction activities can be found in chapter 6 of the M5 West widening Environmental Assessment (September 2010).

M5 South West Motorway, Fairford

Construction of the project is expected to take about two years, with work anticipated to start as early as mid 2011.

During construction, the community would be kept informed about the timing, location and nature of the widening works and potential impacts. Timely communication to motorists and the community would be provided through the project website (www.m5corridorexpansion.com.au) motorway signage, traffic alerts, advertisements and letter box drops.

Key elements of construction would include: • Widening the motorway by adjusting line markings and constucting new pavement in the existing central median.

•Constructing a new motorway control centre at the Hammondville toll plaza.

• Installing new variable message signs along the motorway and in nearby arterial roads.

•Upgrading three local road underpasses along the motorway.

•Constructing temporary construction sites.

M5 South West Motorway key elements of construction

RTA/Pub. 10286F

Page 6: M5 West widening - Roads and Maritime Services€¦ · Hammondville. Benefits of the widening The proposed M5 West widening would deliver much needed road capacity along the M5 South

SEPTEMBER 2010 ENVIRONMENTAL ASSESSMENT

moving people, goods and the economy

M5 West widening

Bridge underpass worksUpgrade to bridge underpasses would be required on local roads at Queen Street, Nuwarra Road and De Meyrick Avenue. Some closures of the underpasses would be required. Motorists and the local residents would always be advised in advance.

Nuwarra Road and Queen Street bridge underpassesThe bridge underpass works at Nuwarra Road Bridge and Queen Street Bridge would include piling, construction of concrete structures, and installation of precast concrete planks. The work would not result in any long term bridge closures; although it is anticipated local road lane closures would be required to allow for the safe construction of the upgrades. Any closures would occur during the night to avoid impacts on vehicles, pedestrians and cyclists during busy peak periods.

De Meyrick Avenue Bridge underpassThe works at De Meyrick Avenue Bridge underpass would include removing parts of the existing bridge underpass and replacing with a new structure to upgrade the existing bridge.

It is anticipated that access to pedestrians and cyclists and motorists would be maintained at all times.

Construction sitesApproximately 10 temporary construction sites would need to be established at locations on or close to the motorway. Where possible, access to sites would be from the motorway or a major road.

Construction sites would be fenced, operate between eight and 24 hours a day, and comprise of:

•Office and meeting rooms.

•Parking.

•Materials and equipment storage.

•Stockpiling eg. topsoil, sand, drainage pipes etc.

Locations where construction sites are planned can be seen in the table to the right. Please note that final locations are yet to be finalised.

What to expect during construction continued....Road widening worksThe proposed M5 West widening would take place within the existing motorway corridor. The original design of the motorway, opened to traffic in 1992, made provisions for the addition of one traffic lane in each direction.

Additional lanes would be created by adjusting line markings and constructing pavement in the existing median space within the centre of the motorway.

Between King Georges Road and Fairford Road, the existing motorway pavement is wide enough to provide additional lanes by line marking. This work on the westbound carriageway would include resurfacing the existing motorway. This work can be noisy and would take place at night with appropriate traffic management and noise controls in place.

Between Fairford Road and Camden Valley Way, additional lanes would be created within the centre of the motorway using the existing centre median. This work can be noisy and would involve excavation and pavement construction with appropriate traffic management and noise controls in place.

Motorway control centreThe motorway control centre at Hammondville would be upgraded. The new centre would be a single story building of about 200 square metres (the size of a small house). The building would operate 24 hours a day, seven days a week and would monitor traffic flow and incidents on the motorway and surrounding road network. The motorway control centre would feed information to variable message signs along the motorway and surrounding local roads, providing motorists with live information about traffic conditions.

The construction of the control centre would involve laying concrete foundations with a frame and cladding, much the same as the construction of a house.

Variable message signsTo improve traffic management along the motorway, approximately 22 new variable message signs would be installed along the motorway and on local roads surrounding the motorway. These provide drivers with live information about traffic conditions such as accidents, road works and special events.

The installation of variable message signs would generally involve excavating footings, installing concrete foundations and erecting the sign and its support structure. Installing the signs would require day and night time work with some temporary lane closures required while the signs are lifted into place.

EASTBOUNDCARRIAGEWAY

WESTBOUNDCARRIAGEWAY

2.5m 3.5m 3.5m 3.5m 3.5m3.5m 3.5m

Breakdown/cyclists

lane

2.5m

Breakdown/cyclists

laneNewlane

Newlane

3m

Existing embankment Existing embankment

New F-type barrier

Existinggrassedmedian

Existinglanes

Existinglanes

De Meyrick Avenue Bridge underpass

Construction sites

An example of a variable message sign

Indicative cross-section of widened carriageways by new pavement construction

Contstruction site

Location Size (approx m²)

Proposed use

Proposed access

Moorebank Avenue (24 hour use)

Near 175–209 Moorebank Avenue, Moorebank

46,750 Main office From Moorebank Avenue

M5/Graham Avenue (1) (24 hour use)

Near 59-79 Graham Avenue, Casula

17,930 Satellite office From M5 South West Motorway

M5/Graham Avenue (2) Near 81 Graham Avenue, Casula

6,170 Satellite office, materials laydown

Access from either Graham Avenue, Liverpool Street or M5 Southwest Motorway

M5/Graham Avenue (3) Near 85A Graham Avenue, Lurnea

10,900 Satellite office, materials laydown

Access from Henry Lawson Drive and possibly from M5 South West Motorway on ramp

Bransgrove Road (24 hour use)

Bransgrove Road, Panania

29,940 Satellite office, materials laydown

Access from Henry Lawson Drive into Bransgrove Road

Beaconsfield Road (24 hour use)

Near 68 Marigold Street, Milperra

3,000 Main office, materials laydown

Access via either Milperra Road or Beaconsfield Road into Marigold Street

Heathcote Road (north) (northern side of the M5 South West Motorway)

Corner M5 on ramp and Heathcote Road, Moorebank

3,000 Materials laydown Access/egress from southbound Heathcote Road. Possible egress onto M5 South West Motorway on ramp

RTA/Pub. 10286F

Page 7: M5 West widening - Roads and Maritime Services€¦ · Hammondville. Benefits of the widening The proposed M5 West widening would deliver much needed road capacity along the M5 South

SEPTEMBER 2010 ENVIRONMENTAL ASSESSMENT

moving people, goods and the economy

M5 West widening

Operational noiseOperational traffic noise has been a key issue raised by the community since the initial proposal to expand the M5 corridor was announced in November 2009.

As part of the road development process, the RTA is committed to minimising the impact of traffic noise on the community through noise reduction measures. Assessment of noise impacts and potential noise reduction measures will occur during the initial planning stages and throughout design, construction and following opening of the widened motorway.

What are the noise goals for the M5 West widening?

Noise goals for the M5 West widening (which is classified as a redevelopment of existing freeway), are specified as:

•60dB(A) during the day (7am to 10pm).

•55dB(A) during the night (10pm to 7am).

Road noise levels were measured at 20 representative locations and then, using computer modelling, estimated elsewhere throughout the area being investigated. Noise levels were measured and calculated using procedures set down in the Australian Standards (eg. AS 2702 Acoustic Methods of Measurement of Road Traffic Noise) and following the Department of Environment, Climate Change and Water requirements. Professional acoustic practitioners undertake all noise assessments for the RTA.

Detailed noise calculations were carried out for two different scenarios: 1. In the future (2013) without the proposed widening.2. In the future (2023) 10 years post opening, with the proposed widening.When assessing future road traffic noise, the RTA considered:•Volume and percentage of heavy and light vehicles during day and night.•Vehicle speeds.•Type of road surface.•Location of homes and other noise sensitive sites (eg. hospitals, schools and parks) relative to road traffic.•Surrounding natural landscape.•Noise reflection from buildings or other man made roadside barriers.•Noise from other traffic sources.

The Department of Environment, Climate Change and Water sets the road traffic noise level goals for the RTA. The Environmental Criteria for Road Traffic Noise (NSW Environment Protection Authority 1999) provides the framework for managing road traffic noise. The RTA must design the widened motorway to take account of the level of noise from traffic 10 years into the future and strive to achieve the noise goals.

Measures proposed to reduce operational noise include:•The widened motorway would be resurfaced with a lower noise road treatment ie. open grade asphalt.•Installation of new noise walls. Refer to the map below for details of existing and proposed new noise walls.

It is anticipated that approximately 180 residences would still be predicted to exceed noise goals and would require consideration of architectural treatments including:•Fresh air ventilation.•Sealing of wall vents.•Replacing window and door seals.•Double glazing of windows.

The map to the right shows where alterations of existing, or construction of new noise walls are proposed. For further information, refer to Chapter 8.2 and Appendix E of the M5 West Widening Environmental Assessment (September 2010).

Existing noise wall on the motorway

Step 1 Measure the existing noise levels

Step 2 Forecast the noise generated by the widened motorway

Step 3 Consider the widened motorway noise levels against the guidelines

Step 4 Install design measures to reduce noise levels during operation

Step 5 Identify properties where noise levels are still predicted to exceed noise goals

For

cont

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tion

see

belo

w

For

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see

abov

e

Note: Project detail shown is indicative only, subject to detailed design

PADSTOW

KINGSGROVE

RIVERWOOD BEVERLYHILLS

LIVERPOOL

CASULA

EDMONDSON PARK

MOOREBANK

WATTLE GROVE

Camden ValleyWay

Salt PanCreek

Geo

rges

Rive

r West

George

s River East

M7 M

otorway

Hume

Highw

ay

Heathcote Road

Moo

reba

nk A

venu

e

Fairf

ord

Roa

d

Milperra Road

Que

en S

tree

t

King Georges Road

Beec

h R

oad

Gibson Street

Casula

MAI

N SOU

THER

N

RAILW

AY

EAST HILLS RAILWAYPanania

RevesbyPadstow

Riverwood

Narwee

BeverlyHills

KEYWidening byconstruction

Widening bylane marking

Existing noise walls

Proposed new oraugmented noise walls

No pavementwidening works

0 0.5 1km

Upgrade of De MeyrickAvenue upderpass

Construction ofbridge deck

Proposed motorwaycontrol centre building

M7/M5MOTORWAY INTERCHANGE

For

cont

inua

tion

see

belo

w

For

cont

inua

tion

see

abov

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Note: Project detail shown is indicative only, subject to detailed design

PADSTOW

KINGSGROVE

RIVERWOOD BEVERLYHILLS

LIVERPOOL

CASULA

EDMONDSON PARK

MOOREBANK

WATTLE GROVE

Camden ValleyWay

Salt PanCreek

Geo

rges

Rive

r West

George

s River East

M7 M

otorway

Hume

Highw

ay

Heathcote Road

Moo

reba

nk A

venu

e

Fairf

ord

Roa

d

Milperra Road

Que

en S

tree

t

King Georges Road

Beec

h R

oad

Gibson Street

Casula

MAI

N SOU

THER

N

RAILW

AY

EAST HILLS RAILWAYPanania

RevesbyPadstow

Riverwood

Narwee

BeverlyHills

KEYWidening byconstruction

Widening bylane marking

Existing noise walls

Proposed new oraugmented noise walls

No pavementwidening works

0 0.5 1km

Upgrade of De MeyrickAvenue upderpass

Construction ofbridge deck

Proposed motorwaycontrol centre building

M7/M5MOTORWAY INTERCHANGE

N

N

M5 South West Motorway location of existing and proposed new or augmented noise walls

RTA/Pub. 10286G