Beyond Nerriga Route Options Study
SEATS Meeting 7 November 2013 at Queanbeyan
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Presentation overview
Study purpose / background
Study area
Project objectives
Methodology
Route options
Progress to date
Preferred route selection
Traffic model
Next steps
Questions
Study purpose / background
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Study’s prime aim is to identify a preferred route(s) for HML BDoubles across the escarpment from the NSW South Coast to the
Monaro, Federal, Kings and/or Hume Hwy’s
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Total funding commitment of $300k - $200k from NSW Gov’t and
$100k from five local councils (Goulburn-Mulwaree, Palerang,
Shoalhaven City, Upper Lachlan Shire and Yass Valley)
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Managed by a Technical Committee - representatives RMS, TfNSW
and the five local councils
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Project managed on behalf of SEATS by Steve Warrell
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Study programmed to be completed in 36 weeks – mid Nov 2013
RMS – 26.5m B-Double access
Study area
Generally, bounded by Hume Hwy to the west, Goulburn, MR92 Nerriga
to Braidwood, Kings Hwy, Canberra and the Barton Hwy
Note - traffic network modelling is beyond the study area
Project Objectives
Determine a preferred route that, as a minimum:
• Improves freight productivity, efficiency and reliability of travel;
• Improves road safety;
• Can meet required design standards;
• Minimises the impact on the natural, cultural and built
environment;
• Maximises the use of existing assets;
• Has the ability to be staged; and
• Provides value for money.
Methodology
• Project Review – previous studies
• Workshops with key stakeholders – heavy vehicle traffic demands
(existing/future) within study area and beyond
• Request and receipt all traffic and crash data from Councils and Gov’t
authorities
• Build GIS mapping to assist understanding of constraints and route
selection
• Heritage (AHIMS, Non-Indigenous)
• State Forest / National Parks
• Crash data
• Topography
• Other miscellaneous data
• Build a network traffic model – base model (calibrated) and predictive
modelling for option assessment
Methodology
cont’d
• Develop and confirm project objectives with TC
• Develop and confirm assessment criteria with TC (in line with project
objectives)
• Build cost estimates for the 3 route options and staging options
• Selection of a preferred route with TC
• Draft Route Options Report
• Meet and present Draft Route Options Report
• Finalise Route Options Report
Route options
ARUP Study 1999 identified 5 key route options –
• Nowra – Nerriga – Tarago – Collector – Gunning
• Nowra – Nerriga – Tarago – ACT
• Nowra – Nerriga – Goulburn
• Nowra – Nerriga – Braidwood – Cooma
• Nowra – Nerriga – Braidwood - Bungendore - ACT
Route options
cont’d
Current study considering 3 route options only –
1. Nerriga – Tarago – Collector – Gunning - Yass (green)
2. Nerriga – Braidwood – Bungendore – Murrumbateman – Yass (red)
and a combination of the above
3. Nerriga – Tarago – Bungendore - Murrumbateman – Yass (red/green)
Projective objective – ‘ability to be staged’
R
Progress to date
• Desktop review of previous studies completed
• Meetings with Councils and key stakeholders completed
• Undertake various reviews –
alignment, drainage completed
environmental,
geotechnical,
• GIS model completed
• Cost estimates for route options and staging – near completion
• Network traffic model – near completion
• Meetings with TC in May, June and Sept
• Assessment of route options and selection of a preferred route –
near completion
• Commenced draft route options report
Preferred route selection
Assessment of the 3 route options and selection of preferred route
has commenced and near completion.
3 meetings with TC throughout this process • Project objectives confirmed
• Assessment criteria agreed and supporting data considered
• Ranking/weighting and scoring methodology agreed
• Staging of options considered
• Traffic network modelling presented and challenged
• Cost estimates presented and challenged
• Selection of a preferred route – subject to further investigation
Traffic Model
•
Links based on GIS
•
Speeds based on Google
•
Route choice checked
•
Demands from Matrix Estimation
Matrix Estimation
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Calibrated Network - 2012
Prior demand matrix
Matrix altered to match observed flows
Separate matrices for light and heavy
Model Validation
Model Validation
Future demands
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2036
Freight Study
Population Growth
Updated trip ends
New demand matrices
Change in OD pairs
Change in Flows – Green Route
2036 – increase / decrease light/heavy
2036 – increase / decrease heavy
Change in Flows – Red Route
Change in Flows – Red / Green Route
Next steps and timing
• Finalise network modelling – 15 Nov
• Finalise cost estimates – 15 Nov
• Finalise scoring of assessment criteria and
selection of preferred route – 22 Nov
• Complete draft report – submit to TC - 11 Dec
Questions
www.ghd.com