Q TRAFFIC AND TRANSPORT IMPACT ASSESSMENT SNOWY 2.0 MAIN WORKS TRAFFIC AND TRANSPORT ASSESSMENT 13 SEPTEMBER 2019 EMM Consulting Snowy 2.0 Main Works Traffic and Transport Assessment EMM Consulting Quality Assurance Project: Snowy 2.0 Main Works Traffic and Transport Assessment Project Number: SCT_00059 Client: EMM Consulting ABN: 28 141 736 558 Prepared by: SCT Consulting PTY. LTD. (SCT Consulting) ABN: 53 612 624 058 Quality Information Document name: Snowy 2.0 Main Works Traffic and Transport Assessment Prepared: Daniel Lee, Principal Consultant Shawn Cen, Senior Consultant Reviewed: Andy Yung, Director Authorised: Seamus Christley, Director Revision Revision Date Details 0.1 14 June 2019 Table of Contents 1.0 11 July 2019 Preliminary Draft 1.1 12 July 2019 Preliminary Draft 2.0 30 August 2019 Updated Draft 3.0 9 September 2019 Final Draft 4.0 11 September 2019 Draft Final report 5.0 13 September 2019 Final report © SCT Consulting PTY LTD (SCT Consulting) SCT Consulting’s work is intended solely for the use of the Client and the scope of work and associated responsibilities outlined in this document. SCT Consulting assumes no liability with respect to any reliance that the client places upon this document. Use of this document by a third party to inform decisions is the sole responsibility of that third party. Any decisions made or actions taken as a result of SCT Consulting’s work shall be the responsibility of the parties directly involved in the decisions or actions. SCT Consulting may have been provided information by the client and other third parties to prepare this document which has not been verified. This document may be transmitted, reproduced or disseminated only in its entirety and in accordance with the above. Snowy 2.0 Main Works Traffic and Transport Assessment EMM Consulting Contents 1.0 Introduction ...................................................................................................................................................... 1 1.1 The project .............................................................................................................................................. 1 1.2 Project location ....................................................................................................................................... 2 1.2.1 Project area ............................................................................................................................ 3 1.2.2 Study area.............................................................................................................................. 3 1.3 Proponent ............................................................................................................................................... 4 1.4 Purpose of this report .............................................................................................................................. 4 1.4.1 Assessment guidelines and requirements ............................................................................. 4 1.5 Related projects ...................................................................................................................................... 5 1.6 Other relevant reports ............................................................................................................................. 5 2.0 Project Description .......................................................................................................................................... 7 2.1 Overview of Snowy 2.0 ........................................................................................................................... 7 2.2 Construction of Snowy 2.0 ...................................................................................................................... 9 2.3 Operation of Snowy 2.0 ........................................................................................................................ 15 2.3.1 Scheme operation and reservoir management .................................................................... 15 2.3.2 Permanent access ............................................................................................................... 15 2.3.3 Maintenance requirements................................................................................................... 15 2.4 Rehabilitation and final land use ........................................................................................................... 16 3.0 Existing traffic and transport environment .................................................................................................. 17 3.1 Study area ............................................................................................................................................ 17 3.2 Existing transport context ...................................................................................................................... 17 3.2.1 Modes of travel .................................................................................................................... 17 3.2.2 Public transport .................................................................................................................... 17 3.2.3 Walking and cycling ............................................................................................................. 18 3.2.4 Road network ....................................................................................................................... 18 3.2.5 Key intersections .................................................................................................................. 21 3.3 Existing traffic volumes ......................................................................................................................... 26 3.3.1 Overview .............................................................................................................................. 26 3.3.2 Daily traffic volumes ............................................................................................................. 26 3.3.3 Seasonal traffic variation ...................................................................................................... 27 3.3.4 Intersection traffic volumes .................................................................................................. 28 3.4 Network assessment criteria ................................................................................................................. 31 3.4.1 Safe Intersection Sight Distance .......................................................................................... 31 3.4.2 Intersection Level of Service ................................................................................................ 32 3.4.3 Austroads intersection warrants ........................................................................................... 32 3.5 Crash review ......................................................................................................................................... 34 3.6 Road conditions / safety assessment .................................................................................................... 36 3.6.1 Safe intersection sight distance review ................................................................................ 39 3.7 Existing intersection capacity assessment ............................................................................................ 39 3.7.1 Austroads intersection warrants ........................................................................................... 39 3.7.2 SIDRA intersection modelling .............................................................................................. 41 4.0 Potential impacts of construction traffic ..................................................................................................... 44 4.1 Construction overview ........................................................................................................................... 44 4.1.1 Construction activities and staging ....................................................................................... 44 4.1.2 Construction staff ................................................................................................................. 44 4.1.3 Construction and staff accommodation compounds ............................................................ 45 4.2 Assessment scenarios .......................................................................................................................... 45 4.3 Construction traffic volumes .................................................................................................................. 46 4.3.1 Projected mid-block traffic volumes ..................................................................................... 46 4.3.2 Projected intersection traffic volumes .................................................................................. 47 4.4 Traffic impacts along key road network sections .................................................................................. 51 Snowy 2.0 Main Works Traffic and Transport Assessment EMM Consulting 4.4.1 Link Road ............................................................................................................................. 51 4.4.2 Snowy Mountains Highway .................................................................................................. 51 4.4.3 Polo Flat Road ....................................................................................................................