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                         FINAL REPORT


  MAIN SOUTH ROAD —
 VICTOR HARBOR ROAD
JUNCTION AND SEAFORD
ROAD/PATAPINDA ROAD
INTERSECTION UPGRADE

                             350TH REPORT

                                 OF THE

           PUBLIC WORKS COMMITTEE




 Tabled in the House of Assembly and ordered to be published, 13 October 2009




                   Third Session, Fifty-First Parliament
                                                                 CONTENTS


THE PUBLIC WORKS COMMITTEE.................................................................................................................2

THE FUNCTIONS OF THE COMMITTEE..........................................................................................................2

PART ONE : PREAMBLE AND PROJECT SUMMARY ...................................................................................3
1.1       TERM OF REFERENCE ..............................................................................................................................3
1.2       FURTHER REPORTING TO THE COMMITTEE ...............................................................................................3
1.3       SCOPE OF THIS REPORT..........................................................................................................................3
1.4       PROJECT BACKGROUND ...........................................................................................................................4
PART TWO: EVIDENCE PRESENTED TO THE COMMITTEE........................................................................5
2.1       THE CURRENT PROPOSAL ........................................................................................................................5
2.2       CONSULTATION ........................................................................................................................................6
2.3       ABORIGINAL HERITAGE.............................................................................................................................7
2.4       HERITAGE BUILDINGS ...............................................................................................................................7
2.5       ECOLOGICAL SUSTAINABILITY ...................................................................................................................7
PART THREE: FINDINGS OF THE COMMITTEE ............................................................................................9
3.1       PROJECT JUSTIFICATION ..........................................................................................................................9
3.2       PUBLIC VALUE OF THE PROPOSED PROJECT ..........................................................................................12
3.3       REVENUE EARNING CAPACITY OF PROPOSED PROJECT ..........................................................................12
3.4       W HOLE LIFE COSTS OF THE PROJECT ....................................................................................................12
3.5       ESTIMATED NET EFFECT OF THE W ORK, AND ITS USE, ON PUBLIC FUNDS ..............................................12
3.6       PROJECT DELIVERY ...............................................................................................................................13
3.7       THE EFFICIENCY AND PROGRESS OF THE PROJECT AND JUSTIFICATION OF ANY EXPENDITURE BEYOND
          ESTIMATED COSTS.................................................................................................................................13
PART FOUR : CONCLUSION & RECOMMENDATION .................................................................................14

PART FIVE : ATTACHMENTS ........................................................................................................................16
5.1       LIST OF W ITNESSES AND SUBMISSIONS ..................................................................................................16
      EXTENT OF PROJECT ............................................................................................. ATTACHMENT 1




Public Works Committee                                                        1                                Main South Road/Victor Harbor Road Junction
                                     THE PUBLIC WORKS COMMITTEE

The Public Works Committee is established pursuant to sections 12A, B and C of the Parliamentary
Committees Act, 1991, proclaimed February 1992.

The following members constitute the Seventeenth Public Works Committee as reconstituted on 24
March 2009:

Ms Vini Ciccarello MP (Presiding Member)
Ms Lindsay Simmons MP
Mr Tom Kenyon MP
Mr Michael Pengilly MP
Mr David Pisoni MP

Principal Research Officer:                 Mr Keith Barrie
Administrative Officer:                     Ms Laura de Cesare


                                   THE FUNCTIONS OF THE COMMITTEE

Section 12C of the Parliamentary Committees Act defines the functions of the Public Works
Committee as:

(a)       to inquire into and report on any public work referred to it by or under this Act, including-

          (i)       the stated purpose of the work;

          (ii)      the necessity or advisability of constructing it;

          (iii)     where the work purports to be of a revenue-producing character, the revenue that it
                    might reasonably be expected to produce;

          (iv)      the present and prospective public value of the work;

          (v)       the recurrent or whole-of-life costs associated with the work, including costs arising
                    out of financial arrangements;

          (vi)      the estimated net effect on the Consolidated Account or the funds of a statutory
                    authority of the construction and proposed use of the work;

          (vii)     the efficiency and progress of construction of the work and the reasons for any
                    expenditure beyond the estimated costs of its construction;

(b)       to perform such other functions as are imposed on the Committee under this or any other Act
          or by resolution of both Houses.




Public Works Committee                                   2                   Main South Road/Victor Harbor Road Junction
                         PART ONE: PREAMBLE AND PROJECT SUMMARY


1.1       Term of Reference
Parliamentary Committees

Parliamentary Committees have the specific task of examining individual initiatives, projects or
policies of the government of the day, or issues of importance to society as a whole. Standing
Committees are created by Act of Parliament and charged with the ongoing examination of subject
categories such as public works.

Parliamentary Committees are made up of both government and opposition Members, with numbers
of each calculated according to rules which reflect the numbers of seats each group holds in the
Parliament. Much of the Committee process is open to the public, and completed reports are public
documents.

This Project

The Department for Transport, Energy and Infrastructure (DTEI) has referred the proposal to upgrade
the Main South Road/Victor Harbor Road junction and the Main South Road/Seaford Road/Patapinda
Road intersection project to the Public Works Committee pursuant to the requirements of the
Parliamentary Committees Act 1991. Please refer to the "Functions of the Committee" on the
previous page for a full description of the Committee's tasks.

1.2       Further Reporting to the Committee
DTEI must notify the Committee immediately in writing should there be substantial changes to the
nature of the project or the evidence provided to the Committee. To enable appropriate monitoring of
the project, DTEI must also provide quarterly reports to the Committee on the progress of
construction. Pursuant to section 12C (vii) of the Act, these reports must outline the efficiency and
progress of construction and provide an explanation of any expenditure beyond the estimated costs
quoted in this report. Evidence of any substantial changes to, or the withdrawal of, any approval
(provisional or otherwise) must also be relayed to the Committee immediately with an appropriate
explanation, and an assessment of the probability of a suitable resolution.

In addition, the Committee requires that it be notified of the proposed date for the commissioning of
the works.

The Committee has the authority under Section 16 (1)(c) of the Parliamentary Committees Act to re-
open investigations into any project for the purpose of further examination and monitoring.

1.3       Scope of This Report
This Report examines the history of the proposal and the efficacy of the application of South
Australian taxpayer funds to upgrade the Main South Road/Victor Harbor Road junction and the Main
South Road/Seaford Road/Patapinda Road intersection. The Report structure is guided by, and
largely limited to, the terms of the Parliamentary Committees Act. It describes, in summary, the
evidence presented to the Committee and concludes with a brief summary incorporating findings
and recommendations.

Detailed evidence upon which the Committee’s decision is based is held in Parliament and, in most
cases, can be examined by making an application to the Committee Administrative Officer.




Public Works Committee                           3                    Main South Road/Victor Harbor Road Junction
1.4       Project Background
The continued development of the Fleurieu Peninsula and the outer metropolitan suburbs,
particularly Seaford and Aldinga, has led to a gradual increase in traffic volumes at the Main South
Road and Victor Harbor Road junction and also at the Main South Road and Seaford Road
intersection.

Victor Harbor Road is the primary arterial link to Adelaide for the McLaren Vale township area. The
road also provides access to Victor Harbor, other Fleurieu Peninsula towns, and tourist
destinations.

In February 2009, the Australian and state governments signed a memorandum of understanding
that committed $3.5 million of Australian Government funding to the Victor Harbor Road, Main
South Road and Seaford Road junction improvements as part of the Nation Building Program
under Off - Network projects.

The South Australian government will contribute a further $8.5 million to complete the project.




Public Works Committee                           4                    Main South Road/Victor Harbor Road Junction
                     PART TWO: EVIDENCE PRESENTED TO THE COMMITTEE


2.1       The Current Proposal
DTEI proposes to upgrade the safety and efficiency of operation of Main South Road between
Seaford Road and Victor Harbor Road. Specific attention will be focused on eliminating the long
queues of vehicles on Victor Harbor Road at its junction with Main South Road. This will be
achieved through:
 Replacing the existing stop sign control on the Victor Harbor Road with a new signalised
    intersection
 Providing three north bound lanes on the Victor Harbor Road approach to Main South Road
 Providing two south bound lanes on the entry to the Victor Harbor Road from Main South
    Road
 Upgrading of the existing Seaford Road junction, to provide three through lanes in both
    directions along Main South Road and two right turn lanes into Seaford Road

Partial land acquisition is required on the northern side of Seaford Road to facilitate improvement
works to the Main South Road/Seaford Road/Patapinda Road intersection. There are three
properties that will be affected and consultations have commenced with these land owners.

Drainage

Analysis of the catchment area has indicated there will be an increase in the run-off area of
approximately 7 %. The additional flow generated is considered marginal and will be catered for
within the existing storm water infrastructure.

The existing stormwater scheme involves a network of stormwater pipes encompassing run-off
from DTEI/council roads and residential/businesses with an outlet into the Onkaparinga River. The
Onkaparinga Catchment Management/Friends of Onkaparinga River and Onkaparinga Council are
being consulted.

Lighting

Road lighting will be provided along the full extent of the project and installed in accordance with
current Australian standards, utilising existing lighting/signal poles where possible at intersections.

Traffic signals

Both signalised junctions will be synchronised with each other during peak periods. Main South
Road will maintain priority during non-peak hours with vehicle detectors installed on all
approaches. In-road vehicle detectors and site traffic controllers linked to a central computer will be
used to ensure co-ordination of the signals.

Public transport

Buses account for approximately 0.5% of traffic at the Main South Road/Victor Harbor Road
junction.

The key routes used by buses are as follows:
 Patapinda Road through to Griffiths Drive via Main South Road and vice versa
 Seaford Road through to the Southern Expressway via Main South Road and vice versa
 Griffiths Drive through to Victor Harbor Road via Robinson Road and vice versa

Extension of the Noarlunga rail line to Seaford, including new stations at Seaford Meadows and
Seaford, is scheduled for completion in 2013.


Public Works Committee                            5                     Main South Road/Victor Harbor Road Junction
2.1       The Current Proposal (cont.)
Cyclists

Cycle lanes are included in the upgrade project in accordance with the SA Bicycle Strategy.

Pedestrians

The adjacent land use does not generate significant volumes of pedestrians. Most movements are
users of public transport traversing to and from bus stops, local businesses and adjacent
residential areas.

The proposed Seaford Heights land division will potentially generate increased pedestrian
movements along Robinson Road and also across Main South Road.

The signalisation of the Main South Road and Victor Harbor Road junction will provide additional
controlled pedestrian crossing facilities for the area.

Services relocation

Negotiations are in progress with the relevant service authorities which are to carry out the
necessary service alterations in advance of the main contract works.

Landscaping

A vegetation survey for the project area has been undertaken, and where possible, the route
alignment has been designed to minimise impacts on existing vegetation. Project landscaping will
be undertaken for the purpose of remediating vegetation removals. The project area does not
provide adequate opportunities for revegetation within the road reserve. Revegetation will therefore
be completed locally to contribute to amenity and habitat value.

Regional impact

This project will provide significant regional benefits through improved accessibility to the Fleurieu
Peninsula and surrounding areas.

All road users will benefit from reduced wear and tear, reduction in travel times and increased
safety.

Impact on business

The expected impact on businesses is considered minimal during the construction phase.
Disruption mitigation measures will be implemented to ensure minimal interference to business
access points; including the use of steel plates to overlay trenching works.

There is no regulatory impact on business as a result of this project.

2.2       Consultation
A DTEI community relations specialist has been engaged on this project to manage consultation
with all key stakeholders.

A public consultation exercise, including a series of public displays at locations around the local
area, was conducted between 9 June – 10 July 2009. While the rate or interest in the project from
the public perspective appeared very low, the majority of those that did respond and/or attend the
displays to discuss the project with the project team indicated satisfaction with the proposed
scheme.

Public Works Committee                            6                      Main South Road/Victor Harbor Road Junction
2.2       Consultation (cont.)
The following agencies have been consulted:
 Department of Premier and Cabinet
    o Aboriginal Affairs and Reconciliation Division
    o Sustainability and Climate Change
 Department of Water, Land and Biodiversity
 Planning SA
 Department for Environment and Heritage
 Attorney-General's Department
    o Crown Solicitor's Office - Native Title Section
 The Development Assessment Commission
 Environment Protection Agency

Consultation has also taken place with:
 City of Onkaparinga
 Alexandrina Council
 City of Victor Harbor
 District Council of Yankalilla

The following groups have been consulted:
 Victor Harbor Road Corridor Working Group
 RAA

The Committee accepts that the proposing agency has undertaken all appropriate agency and
community consultation.

2.3       Aboriginal Heritage
The Committee accepts that investigations undertaken by the proposing agency indicate that the
proposed works will have no impact upon any sites of Aboriginal significance.

2.4       Heritage Buildings
In investigation into potential impacts to Aboriginal Heritage sites has been undertaken in
accordance with the DTEI Cultural Heritage Guidelines. Two registered sites of Aboriginal heritage
significance are located within the adjacent Onkaparinga Recreation Reserve however these sites
are outside of the project area and will not be impacted upon by the project.

As the project will be constructed within the heavily disturbed road reserve, the likelihood of
encountering aboriginal heritage items is extremely low.

2.5       Ecological Sustainability
A Sustainability Management Plan (SMP) was developed in consultation with the Office of
Sustainability and Climate Change, Department for Environment and Heritage, Department of
Water Land and Biodiversity Conservation, Environment Protection Authority and Zero Waste SA.

The key sustainability issues relating to this project are:

Noise

Widening of the eastern side of Main South Road will bring traffic closer to adjacent commercial
and residential properties. Potential impacts from this widening are being investigated through
noise modelling. Appropriate noise mitigation will be undertaken if deemed necessary under the
DTEI Road Traffic Noise Guidelines and will be provided for in the overall project budget.

Public Works Committee                              7               Main South Road/Victor Harbor Road Junction
2.5       Ecological Sustainability (cont.)
Energy consumption and renewable energy

Optimisation of the lighting design and energy efficient lighting will be utilised to provide for safe
pedestrian and traffic movement whilst minimising energy consumption over the life of this
infrastructure. Opportunities for use of materials with low embodied energy such as recycled
asphalt are being investigated.

Waste minimisation

The project will generate waste materials through waste streams associated with soil and road
base excavation. The project team will adopt the principles of the waste management hierarchy as
outlined in the Zero Waste SA Act, 2004 – a widely accepted guide for prioritising waste
management practices with the objective to obtain the most favourable environmental outcome.
Where possible, these materials will either be reused as part of the project or recycled elsewhere.

All recycling and reuse of material will be undertaken in accordance with the Environment
Protection Act, 1993 and DTEI Operational Instruction 21.6 -Recycled Fill Materials for Transport
Infrastructure.

Air pollutant and greenhouse gas emissions

The key goal of this project is to improve traffic flow through the subject intersections and reduce
congestion. Air pollution and greenhouse gas emissions generated from stop start traffic will
consequently be reduced. There will be no net increase in traffic resulting from the project.

Native vegetation impacts

The project will require removal of a small number of native trees however the majority of
vegetation removal consists of planted vegetation of low habitat value.

Some of the planted vegetation requiring removal does meet 'Significant Tree' size criteria under
the Development Act 1993. Remediation of all vegetation removals will be delivered through local
revegetation with native species. This will be undertaken in accordance with DTEI's Standard
Operating Procedure under the Native Vegetation Act 1991 and in consultation with local
biodiversity protection projects.

Environmental Impact Assessment

An Environmental Impact Assessment Report is currently being prepared by DTEI in accordance
with section 46 of the Development Act, 1993. The assessment will identify key environmental
issues and ensure that appropriate management measures are in place to mitigate any impacts on
the environment or local community.

Project Environmental Management Plan

A Project Environmental Management Plan (PEMP) will be prepared by DTEI. This will be a project
specific document that details key environmental issues and requirements for the project.

Construction Environmental Management Implementation Plan

A Construction Environmental Management Implementation Plan (CEMP) will be produced by the
construction contractor in response to the PEMP, to detail how the construction process will
implement and manage the environmental aspects of the project. The CEMP may form part of the
overall Quality Plan, which would also addresses safety, operating procedures, inspection and test
plans and checklists.

Public Works Committee                            8                    Main South Road/Victor Harbor Road Junction
                         PART THREE: FINDINGS OF THE COMMITTEE


3.1       Project Justification
The junction of Main South Road and the Victor Harbor Road is unsignalised with stop sign control
on the Victor Harbor Road approach. Traffic travelling north on Victor Harbor Road is often delayed
at the junction, and long queues can form. This occurs most noticeably on long weekends, or
during wine festival functions (Sea and Vines etc). As development within the Fleurieu Peninsula
and the Seaford area increases, further delays during week day peaks may also increase.

Traffic

Main South Road / Victor Harbor Road Junction

The stop sign control for northbound traffic on the Victor Harbor Road has limited capacity.
Consequently when traffic volumes on this approach exceed approximately 600 vehicles per hour
(vph), queues develop quickly. Some traffic diverts to Robinson Road to utilise the signalised
intersection with Main South Road. On long weekends, queues can be over 1 kilometre in length
on Victor Harbor Road. The alternative Robinson Road route adds 750 metres to the trip length.

The proposed Seaford Heights residential development adjoining Robinson Road will generate
significant additional traffic and make the diversion of traffic from Victor Harbor Road less
attractive.

Main South Road / Seaford Road/Patapinda Road intersection

In the evening peak, congestion can occur in the left hand south bound approach to the Seaford
Road intersection, where traffic queues to exit via the single left turn lane on the Victor Harbor
Road, just south of Seaford Road.

The increase in development at Seaford, west of Main South Road, means there is a growing need
for additional right turn capacity from Main South Road at the Seaford Road intersection.

Traffic composition

Commuters

The main component of the traffic flow during weekday peak periods on Main South Road and
Victor Harbor Road is commuters. Many workers in the area travel north to work which generates a
tidal flow in both peak hours, and as a result the queuing impacts on Victor Harbor Road.

Freight

The current commercial vehicle content for all three approaches of the Main South Road / Victor
Harbor Road junction is approximately 6.5%, with three quarters of these being rigid vehicles and
the remainder articulated vehicles – see Table 5 in Appendix B. Although both roads are gazetted
B-double routes, the current proportion of B-Double traffic is less than 0.2% of total traffic volumes.

Road safety

Analysis of crash history at the Main South Road and Victor Harbor Road junction, for the period
2003-2007 (inclusive) indicates that there are two main crash types that dominate the statistics:
 Right angle crashes between northbound Victor Harbor Road traffic and southbound Main
    South Road southbound traffic
 Rear end collisions within the Victor Harbor Road right turn queue

Public Works Committee                            9                     Main South Road/Victor Harbor Road Junction
3.1       Project Justification (cont.)
The provision of traffic signals at the Victor Harbor Road intersection is predicted to reduce the
number of right-angle crashes by 70 per cent.

The crash history at the Main South Road / Seaford Road/Patapinda Road intersection indicates
that rear end crashes dominate. The greatest concern is the southbound approach to Main South
Road, with double the number of crashes in comparison to those for northbound traffic.

The project is intended to contribute to the following State Strategic Plan objectives and targets:

          Objective                    Target Number & Description

          1: Growing prosperity        T1.15 Tourism industry: increase visitor expenditure
                                       in South Australia tourism industry from $3.7 billion in
                                       2002 to $6.3 billion by 2014.
                                       T1.21 Strategic infrastructure: match the national
                                       average in terms of investment in key economic and
                                       social infrastructure.

          2: Improve wellbeing         T2.9 Road safety - fatalities: by 2010, reduce road
                                       fatalities to less than 90 persons per year.
                                       T2.10 Road safety - serious injuries: by 2010
                                       reduce serious injuries to less than 1000 per year.

          3: Building communities      T5.9 Regional population levels: maintain regional
                                       South Australia’s share of the state’s population
                                       (18%).

In the development of this project four options were considered. These were:
Option 1 – A traffic signal scheme
Option 2 – A roundabout scheme
Option 3 – Formally redirect all northbound traffic on Victor Harbor Road via Robinson Road
Option 4 – Grade separation

Option 1 – A traffic signal scheme (recommended option)

The recommended option consists of:
 Replacing the existing stop sign control on the Victor Harbor Road with a new signalised
    intersection
 Providing three north bound lanes on the Victor Harbor Road approach to Main South Road
 Providing two south bound lanes on the entry to the Victor Harbor Road from Main South
    Road
 Upgrading of the existing Seaford Road junction, to provide three through lanes in both
    directions along Main south Road and two right turn lanes into Seaford Road

The recommended option will provide very good performance as demonstrated by micro-simulation
traffic modelling which was undertaken to test the proposal. It is able to cater for traffic growth over
the next 15 to 20 years.

Option 2 - A multi-lane roundabout scheme

Existing road geometry and traffic flow patterns do not favour a roundabout solution. A roundabout
will limit future capacity of the junction.



Public Works Committee                            10                    Main South Road/Victor Harbor Road Junction
3.1       Project Justification (cont.)
In the operation of any roundabout scheme, give-way principles still apply. In this instance traffic on
Victor Harbor Road will still need to give way to south bound traffic on Main South Road. This is a
similar constraint to the current stop sign control on Victor Harbor Road and as a consequence will
provide little or no improvement to current traffic flow restrictions for northbound Victor Harbor
Road traffic. Signalised control of movements on the roundabout would still be required to enable
traffic flow improvements out of Victor Harbor Road.

Option 3 - Redirect northbound Victor Harbor Road traffic onto Robinson Road

The redirection of all northbound Victor Harbor Road traffic via Robinson Road impacts on the role
of that road as a local road. Under this option, the existing northbound traffic section of Victor
Harbor Road will be closed to through traffic between Main South Road and Robinson Road;
forcing all northbound traffic onto Robinson Road and via the Robinson Road / Main South Road
intersection to join Main South Road.

The proposed Seaford Heights residential development is expected to commence construction
later this year with its main access point onto Robinson Road. The development will generate a
significant increase in traffic volumes and a signalised junction is being proposed to cater for this
traffic. Diversion of all northbound Victor Harbor Road traffic onto Robinson Road is likely to
compromise the effectiveness of both Victor Harbor Road and the Seaford Heights residential
access.

This option would also require significant road works at the Robinson Road and Victor Harbor
Road intersection and along Robinson Road. The use of Robinson Road also requires northbound
traffic to travel an extra 750 metres, increasing road user costs.

Option 4 - Grade separation

The option consists of a two lane overpass structure extending from the northbound lanes on
Victor Harbor Road, passing over both Main South Road carriageways and merging into Main
South Road on the southern approach to Seaford Road intersection. The concept provides for a
free flow of traffic off Victor Harbor Road onto Main South Road and also maintaining free flow
northbound traffic on Main South Road. All traffic would still be required to pass through the
Seaford Road intersection.

The close proximity of the Seaford Road signalised intersection would counteract the potential
benefits of this option and would require land acquisition on the western side of Main South Road

The cost of a grade separation is very high compared to the other options considered. A full grade-
separated interchange at this location is difficult to justify in comparison to other more highly-
congested locations in metropolitan Adelaide (e.g. intersections along South Road, north of
Darlington). Additionally, a grade separation will have significant visual, noise and land acquisition
impacts.

An economic evaluation has been carried out for the signalisation of the Main South Road/Victor
Harbor Road junction and the recommended improvements to the Main South Road/Seaford
Road/Patapinda Road intersection.

The analysis of costs and benefits over a twenty year period using a 7% discount rate resulted in a
project Net Present Value (NPV) of $11.1 million (2009 dollars), and a Benefit Cost Ratio (BCR) of
2.2. For road related projects, the BCR is a typical measure used to compare capital spending
against benefits gained. A positive NPV and a BCR well above 1 indicate strong justification for the
project.



Public Works Committee                            11                    Main South Road/Victor Harbor Road Junction
3.1       Project Justification (cont.)

                                                                    7%          4%
                         NPV Benefits ($m)                          20.6        27.4
                         NPV Costs ($m)                              9.5        10.4
                         Net Present Value                          11.1        17.0
                         BCR                                         2.2         2.6

3.2       Public Value of the Proposed Project
The major objectives of the upgrade project are to:
 Reduce long queues and delays on the Victor Harbor approach to the Main South Road
    junction from the south, particularly at weekends and holiday periods
 Reduce weekday peak hour delays on the Main South Road southern approach to the Victor
    Harbor Road junction, caused by the number of traffic lanes reducing from two to one
 Address concerns about safety, particularly the potential for conflict with right turning traffic out
    of Victor Harbor Road onto Main South Road
 Increase the provision for traffic turning into and out of Seaford Road.
 Ensure satisfactory levels of operation for at least twenty years

3.3       Revenue Earning Capacity of Proposed Project
No revenue opportunities have been identified for this project.

3.4       Whole Life Costs of the Project
The estimated project capital cost for the recommended improvements to the Main South
Road/Seaford Road/Patapinda Road intersection and the signalisation of the Main South
Road/Victor Harbor Road junction is $11.6 million. Construction costs are estimated at $10.17
million.

The project moderately increases the total pavement area and additional routine maintenance
costs of approximately $4600 per year are expected. However, the existing pavement at both
junctions is being replaced with new asphalt pavement with a twenty year design life. As a result,
there will be significant future periodic pavement maintenance savings, which will offset the
additional routine maintenance costs associated with the increased pavement area.

3.5       Estimated Net Effect of the Work, and Its Use, on Public Funds

            Activity                                          Cost ($M)
                                       2008-2009         2009-2010    2010-2011               Total

            Planning & Design                .275           .150                               .425
            Construction                                   8.491           1.679             10.170
            Land Acquisition                                 .305                              .305
            Management             &         .050             425           .177               .652
            Supervision
            Consultation           &         .025           .015            .010                .050
            publicity
            TOTAL                            .350          9.386           1.866             11.602




Public Works Committee                              12                     Main South Road/Victor Harbor Road Junction
3.6       Project Delivery
Key milestones for project delivery are:

    Early Oct 2009                         Calling of tenders for construction
    Nov-Dec 2009                           Service relocations & accommodation works
    Mid Dec 2009                           Awarding of contract
    Early Jan 2010                         Commencement of main contract works
    Mid August 2010                        Completion of work

The process of providing a formal forum to display project plans and seek community feedback has
been completed. Consultation with identified stakeholders will continue throughout the project as
required (e.g. affected land holders, councils etc).

It is proposed that construction works for this project be undertaken by a private contractor
appointed through a competitive tendering process, in accordance with the State Government’s
Procurement Management Framework.

DTEI will undertake project management in accordance with its project management framework
and guidelines.

Risk management has been undertaken as an integral part of the project management process for
this project. Potential risks that may affect the project have been identified. These risks have been
investigated and measures to manage and/or mitigate impacts investigated. The main project risk
that has been identified is as follows:

Project cost exceeds funding

This risk has been mitigated through inclusion of a contingency allowance in the project estimate.
DTEI will closely manage the project to ensure delivery within the allocated budget.

Traffic delays during construction

This risk will be mitigated by the production of a Traffic Management Plan by the successful
contractor and monitoring throughout construction to ensure that traffic delays are minimised
wherever possible.

3.7       The Efficiency and Progress of the Project and Justification of Any
          Expenditure Beyond Estimated Costs
The Committee will monitor the progress of the project as required by the Parliamentary Committees
Act through the regular reports the proposing agency is required to provide prior to the completion of
construction (refer to "Further Reporting to the Committee"). The Committee will provide a further
statement to Parliament in the event that subsequent information provided renders this Report
inaccurate or misleading.




Public Works Committee                             13                  Main South Road/Victor Harbor Road Junction
                         PART FOUR: CONCLUSION & RECOMMENDATION


The Public Works Committee has examined written and oral evidence in relation to the proposal to
upgrade the Main South Road/Victor Harbor Road junction and the Main South Road/Seaford
Road/Patapinda Road intersection. It has also been assured by the Department for Transport,
Energy and Infrastructure that acquittals have been received from the Departments of Treasury and
Finance, Premier and Cabinet and the Crown Solicitor that the works and procedures are lawful. The
Committee is satisfied that the proposal has been subject to the appropriate agency and
community consultation and meets the criteria for examination of projects as set out in the
Parliamentary Committees Act 1991.

Victor Harbor Road is the primary arterial link to Adelaide for the McLaren Vale township area. The
road also provides access to Victor Harbor, other Fleurieu Peninsula towns, and tourist
destinations.

In February 2009, the Australian and state governments signed a memorandum of understanding
that committed $3.5 million of Australian Government funding to the Victor Harbor Road, Main
South Road and Seaford Road junction improvements as part of the Nation Building Program
under Off - Network projects. The South Australian government will contribute a further $8.5
million to complete the project.

DTEI proposes to upgrade the safety and efficiency of operation of Main South Road between
Seaford Road and Victor Harbor Road. Specific attention will be focused on eliminating the long
queues of vehicles on Victor Harbor Road at its junction with Main South Road.

The stop sign control for northbound traffic on the Victor Harbor Road has limited capacity.
Consequently when traffic volumes on this approach exceed approximately 600 vehicles per hour,
queues develop quickly. Some traffic diverts to Robinson Road to utilise the signalised intersection
with Main South Road. On long weekends, queues can be over 1 kilometre in length on Victor
Harbor Road. The alternative Robinson Road route adds 750 metres to the trip length.

The proposed Seaford Heights residential development adjoining Robinson Road will generate
significant additional traffic and make the diversion of traffic from Victor Harbor Road less
attractive.

The project will:
 Replace the existing stop sign control on the Victor Harbor Road with a new signalised
    intersection
 Provide three north bound lanes on the Victor Harbor Road approach to Main South Road
 Provide two south bound lanes on the entry to the Victor Harbor Road from Main South Road
 Upgrade the existing Seaford Road junction, to provide three through lanes in both directions
    along Main South Road and two right turn lanes into Seaford Road

Both signalised junctions will be synchronised with each other during peak periods. Main South
Road will maintain priority during non-peak hours with vehicle detectors installed on all
approaches. In-road vehicle detectors and site traffic controllers linked to a central computer will be
used to ensure co-ordination of the signals.

This project will provide significant regional benefits through improved accessibility to the Fleurieu
Peninsula and surrounding areas. In addition, all road users will benefit from reduced wear and
tear, reduction in travel times and increased safety.

Widening of the eastern side of Main South Road will bring traffic closer to adjacent commercial
and residential properties. Potential impacts from this widening are being investigated through
noise modelling. Appropriate noise mitigation will be undertaken if deemed necessary under the
DTEI Road Traffic Noise Guidelines and will be provided for in the overall project budget.

Public Works Committee                            14                    Main South Road/Victor Harbor Road Junction
4.        Conclusion and Recommendation (cont.)
Analysis of crash history at the Main South Road and Victor Harbor Road junction, for the period
2003-2007 (inclusive) indicates that there are two main crash types that dominate the statistics:
 Right angle crashes between northbound Victor Harbor Road traffic and southbound Main
    South Road southbound traffic
 Rear end collisions within the Victor Harbor Road right turn queue

The provision of traffic signals at the Victor Harbor Road intersection is predicted to reduce the
number of right-angle crashes by 70 per cent.

The crash history at the Main South Road / Seaford Road/Patapinda Road intersection indicates
that rear end crashes dominate. The greatest concern is the southbound approach to Main South
Road, with double the number of crashes in comparison to those for northbound traffic.

The major objectives of the upgrade project are to:
 Reduce long queues and delays on the Victor Harbor approach to the Main South Road
    junction from the south, particularly at weekends and holiday periods
 Reduce weekday peak hour delays on the Main South Road southern approach to the Victor
    Harbor Road junction, caused by the number of traffic lanes reducing from two to one
 Address concerns about safety, particularly the potential for conflict with right turning traffic out
    of Victor Harbor Road onto Main South Road
 Increase the provision for traffic turning into and out of Seaford Road.
 Ensure satisfactory levels of operation for at least twenty years

The project will provide very good performance as demonstrated by micro-simulation traffic
modelling which was undertaken to test the proposal. It is able to cater for traffic growth over the
next 15 to 20 years.

An economic evaluation has been carried out for the signalisation of the Main South Road/Victor
Harbor Road junction and the recommended improvements to the Main South Road/Seaford
Road/Patapinda Road intersection.

The analysis of costs and benefits over a twenty year period using a 7% discount rate resulted in a
project Net Present Value (NPV) of $11.1 million (2009 dollars), and a Benefit Cost Ratio (BCR) of
2.2. For road related projects, the BCR is a typical measure used to compare capital spending
against benefits gained. A positive NPV and a BCR well above 1 indicate strong justification for the
project.

The project is expected to commence in January 2010 and be completed by August 2010 at a cost of
$11.6 million.

Given the above and pursuant to Section 12C of the Parliamentary Committees Act, 1991, the Public
Works Committee reports to Parliament that it recommends the proposed public work.




Vini Ciccarello MP
PRESIDING MEMBER
Public Works Committee                                                                    2009




Public Works Committee                            15                    Main South Road/Victor Harbor Road Junction
                                  PART FIVE: ATTACHMENTS


5.1       List of Witnesses and Submissions

Witnesses

The following persons appeared before the Committee on Wednesday, 30 September 2009 at Old
Parliament House, North Terrace, Adelaide:

Mr Lou George, Director, Projects, DTEI;
Mr John Calder, Senior Project Officer, Projects, DTEI;
Nilesh Bhindi, Project Manager, Projects, DTEI.




Submissions

Department for Transport, Energy and Infrastructure, Main South Road/Victor Harbor Road
Junction, Main South Road/Seaford Road/Patapinda Road Intersection Upgrade, September 2009.




Public Works Committee                            16             Main South Road/Victor Harbor Road Junction
ATTACHMENT: 1

								
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