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Beyond Nerriga Route Options Study SEATS Meeting 7 November 2013 at Queanbeyan Image placeholder
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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
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Study purpose / background Study’s prime aim is to identify a preferred route(s) for HML B- Doubles across the escarpment from the NSW South Coast to the Monaro, Federal, Kings and/or Hume Hwy’s 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) Managed by a Technical Committee - representatives RMS, TfNSW and the five local councils Project managed on behalf of SEATS by Steve Warrell Study programmed to be completed in 36 weeks – mid Nov 2013
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RMS – 26.5m B-Double access
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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
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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.
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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
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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
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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
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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’
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R
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Progress to date Desktop review of previous studies completed Meetings with Councils and key stakeholders completed Undertake various reviews – environmental, geotechnical, alignment, drainage completed 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
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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
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Traffic Model Links based on GIS Speeds based on Google Route choice checked Demands from Matrix Estimation
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Matrix Estimation Calibrated Network - 2012 Prior demand matrix Matrix altered to match observed flows Separate matrices for light and heavy
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Model Validation
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Future demands 2036 Freight Study Population Growth Updated trip ends New demand matrices Change in OD pairs
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Change in Flows – Green Route 2036 – increase / decrease light/heavy2036 – increase / decrease heavy
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Change in Flows – Red Route
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Change in Flows – Red / Green Route
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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 Next steps and timing
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Questions
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