Road Investment Strategy East Area 6 A47 / A11 Thickthorn Junction Improvements PCF Stage 2 Scheme Assessment Report (SAR) HE551
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Road Investment Strategy East Area 6 A47 / A11 Thickthorn Junction Improvements PCF Stage 2 Scheme Assessment Report (SAR) HE551492-ACM-GEN-TJ-RP-ZM-00006 Date: 16 January 2018 Version: 4.0 1 This page is intentionally left blank 2 Document Control Document Title Scheme Assessment Report (SAR) – HE551492-ACM-GEN-TJ-RP-ZM-00006 Author Kevin Mitchell / Oluwatobi Owoiya/Fay Lagan/John Alderman/Constantinos Rontogiannis Owner Romeu Rosa Distribution See Reviewers List Document Status For Stage Approval Revision History Version Date Description Author 1.0 30th June 2017 For Stage Approval Kevin Mitchell 2.0 8th December 2017 For Stage Approval (core growth Oluwatobi Owoiya/Fay only – Traffic) Lagan/John Alderman 3.0 21st December 2017 For Stage Approval (including high- Oluwatobi Owoiya/Fay low growth summary) Lagan/Mark Chadwick 4.0 16th January 2018 For Stage Approval (all final Constantinos comments) Rontogiannis/Brendan Kemp Reviewer List Name Role Romeu Rosa Intergrated Project Team Peter Grant Transport Planning Group (TPG) Jose Garvi Serrano SES Environment Team Mark Howes SES Safer Roads Group Approvals Name Signature Title Date of Version Issue Guy Lewis Programme Lead (PL) 25/01/18 1 The original format of this document is copyright to the Highways England 3 Limitations AECOM Infrastructure & Environment UK Limited (“AECOM”) has prepared this Report for Highways England (“Client”) in accordance with the Agreement under which our services were performed in the Collaborative Delivery Framework (Consultancy) 2016-2017, Roads Investment Strategy Schemes A47/A12 Corridor, Project Control Framework Stage 2 commission. No other warranty, expressed or implied, is made as to the professional advice included in this Report or any other services provided by AECOM. This Report is confidential and may not be disclosed by the Client or relied upon by any other party without the prior and express written agreement of AECOM. The conclusions and recommendations contained in this Report are based upon information provided by others and upon the assumption that all relevant information has been provided by those parties from whom it has been requested and that such information is accurate. Information obtained by AECOM has not been independently verified by AECOM, unless otherwise stated in the Report. The methodology adopted and the sources of information used by AECOM in providing its services are outlined in this Report. The work described in this Report was undertaken between 3rd January 2017 and Janaury 2018 and is based on the conditions encountered and the information available during the said period of time. The scope of this Report and the services are accordingly factually limited by these circumstances. Where assessments of works or costs identified in this Report are made, such assessments are based upon the information available at the time and where appropriate are subject to further investigations or information which may become available. AECOM disclaim any undertaking or obligation to advise any person of any change in any matter affecting the Report, which may come or be brought to AECOM’s attention after the date of the Report. Certain statements made in the Report that are not historical facts may constitute estimates, projections or other forward-looking statements and even though they are based on reasonable assumptions as of the date of the Report, such forward-looking statements by their nature involve risks and uncertainties that could cause actual results to differ materially from the results predicted. AECOM specifically does not guarantee or warrant any estimate or projections contained in this Report. 4 Table of Contents 1 Introduction ................................................................................................................................. 13 1.1 Scheme Development and History........................................................................................ 13 1.2 Project Control Framework ................................................................................................... 14 1.3 Approach and Scope ............................................................................................................. 15 1.4 Purpose of the Report ........................................................................................................... 16 2 Planning Brief .............................................................................................................................. 17 2.1 Introduction ............................................................................................................................ 17 2.2 National Policy....................................................................................................................... 17 2.4 Local planning policy ............................................................................................................. 22 2.5 Spatial strategies ................................................................................................................... 23 2.6 Neighbourhood Development Plans ..................................................................................... 24 3 Existing Conditions .................................................................................................................... 26 3.1 Description of the Locality ..................................................................................................... 26 3.2 Existing Highway Network ..................................................................................................... 28 3.3 Operational Assessment of Thickthorn Junction................................................................... 41 3.4 Collision Data ........................................................................................................................ 46 3.5 Statement of the Problem ..................................................................................................... 47 3.6 Topography, Land Use, Property and Industry ..................................................................... 47 3.7 Climate .................................................................................................................................. 48 3.8 Drainage ................................................................................................................................ 49 3.9 Geology ................................................................................................................................. 51 3.10 Unexploded Ordnance .......................................................................................................... 52 3.11 Mining .................................................................................................................................... 52 3.12 Public Utilities ........................................................................................................................ 52 3.13 Technology ............................................................................................................................ 53 3.14 Maintenance Access ............................................................................................................. 55 4 Accessibility and Integration ..................................................................................................... 57 4.1 Impact of the Scheme ........................................................................................................... 57 4.2 Existing NMU Provision ......................................................................................................... 57 4.3 Existing Severance ............................................................................................................... 57 4.4 Existing Access to Transport Systems .................................................................................. 57 5 Planning Factors ......................................................................................................................... 59 5.1 Planning Procedure ............................................................................................................... 59 5.2 Committed Developments ..................................................................................................... 59 5.3 Committed Infrastructure ....................................................................................................... 68 5.4 Potential Development .......................................................................................................... 70 5.5 Options Investigated ............................................................................................................. 71 5.6 Single Option Constraints ..................................................................................................... 71 6 Summary of Do-Nothing Consequences .................................................................................. 73 5 6.1 Traffic and Economics ........................................................................................................... 73 7 Summary of the originally proposed Single Option ................................................................ 75 7.1 Background ........................................................................................................................... 75 7.2 Originally proposed Single Option ........................................................................................ 75 7.3 Preliminary