Forth Replacement Crossing Study Report 3 : Option Generation and Sifting Volume 1 : Main Report
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Forth Replacement Crossing Study Report 3 : Option Generation and Sifting Volume 1 : Main Report December 2006 Jacobs U.K. Limited, 95 Bothwell Street, Glasgow G2 7HX Tel: 0141 204 2511 Fax: 0141 226 3109 www.jacobs.com Transport Scotland Forth Replacement Crossing Study Authorisation Jacobs UK Ltd in association with Faber Maunsell, Grant Thornton and Tribal Consulting has great pleasure in presenting this document. Copyright Jacobs U.K. Limited. All rights reserved. No part of this report may be copied or reproduced by any means without prior written permission from Jacobs U.K. Limited. If you have received this report in error, please destroy all copies in your possession or control and notify Jacobs U.K. Limited. This report has been prepared for the exclusive use of the commissioning party and unless otherwise agreed in writing by Jacobs U.K. Limited, no other party may use, make use of or rely on the contents of this report. No liability is accepted by Jacobs U.K. Limited for any use of this report, other than for the purposes for which it was originally prepared and provided. Opinions and information provided in the report are on the basis of Jacobs U.K. Limited using due skill, care and diligence in the preparation of the same and no warranty is provided as to their accuracy. It should be noted and it is expressly stated that no independent verification of any of the documents or information supplied to Jacobs U.K. Limited has been made. Authorisation & Preparation Prepared by: Ian Dudgeon Reviewed by: David Webster Approved by: Alan Duff Version History Version No. Date Change Details Author Approver 1 21/12/06 Draft Version 1 IWD WAD 2 26/01/07 Draft Version 2 IWD WAD 3 07/02/07 Draft Version 3 IWD WAD 4 12/02/07 Draft Version 4 IWD WAD 5 13/02/07 Final IWD WAD 2 Transport Scotland Forth Replacement Crossing Study Contents EXECUTIVE SUMMARY 1 INTRODUCTION ...........................................................................................................................12 1.1 BACKGROUND ....................................................................................................................12 1.2 METHODOLOGY..................................................................................................................13 1.3 SUMMARY OF REPORTS 1 AND 2 ....................................................................................14 2 CONSTRAINTS MAPPING ...........................................................................................................19 2.1 INTRODUCTION ..................................................................................................................19 2.2 ENVIRONMENTAL CONSTRAINTS....................................................................................19 2.3 PHYSICAL CONSTRAINTS .................................................................................................23 2.4 CONSTRAINTS IMPOSED BY THE CONDITION OF THE EXISTING CROSSINGS ........27 2.5 SUMMARY OF CONSTRAINTS...........................................................................................29 3 GENERATION OF OPTIONS........................................................................................................31 3.1 INTRODUCTION ..................................................................................................................31 3.2 LIGHT RAPID TRANSIT OPTIONS......................................................................................33 3.3 HEAVY RAIL OPTIONS .......................................................................................................33 3.4 POSSIBLE COMPLEMENTARY MEASURES.....................................................................34 3.5 INITIAL TESTING OF COMPLEMENTARY MEASURES....................................................35 4 INITIAL SIFTING ...........................................................................................................................37 4.1 INTRODUCTION ..................................................................................................................37 4.2 INITIAL SIFTING...................................................................................................................37 5 OPTION DEVELOPMENT FOR SIFTING.....................................................................................55 5.1 THEMATIC GROUPING.......................................................................................................55 5.2 CORRIDOR SIFTING CRITERIA .........................................................................................56 5.3 CORRIDOR SIFTING ASSUMPTIONS................................................................................57 5.4 BRIDGE CROSSING DESIGN ISSUES...............................................................................58 3 Transport Scotland Forth Replacement Crossing Study 5.5 TUNNEL OPTIONS ..............................................................................................................64 6 CORRIDOR ASSESSMENT .........................................................................................................67 6.1 INTRODUCTION ..................................................................................................................67 6.2 CORRIDOR A.......................................................................................................................67 6.3 CORRIDOR B.......................................................................................................................69 6.4 CORRIDOR C.......................................................................................................................72 6.5 CORRIDOR D.......................................................................................................................74 6.6 CORRIDOR E.......................................................................................................................76 6.7 SUMMARY AND RECOMMENDATIONS ............................................................................78 7 PROCUREMENT AND FINANCE.................................................................................................82 7.1 INTRODUCTION ..................................................................................................................82 7.2 STAGE 1 – IDENTIFICATION OF PROCUREMENT & FUNDING OPTIONS ....................83 7.3 STAGE 2 – QUANTITATIVE AND QUALITATIVE ANALYSIS ............................................89 7.4 INITIAL RISK ASSESSMENTT ...............................................................................................90 8 LEGISLATIVE ISSUES .................................................................................................................93 8.1 INTRODUCTION ..................................................................................................................93 8.2 A NEW ACT OF THE SCOTTISH PARLIAMENT ................................................................93 8.3 MAKING USE OF EXISTING LEGISLATION.......................................................................94 8.4 FUTURE MANAGEMENT OF THE CROSSINGS ...............................................................95 9 SUMMARY AND CONCLUSIONS..............................................................................................100 9.1 INTRODUCTION ................................................................................................................100 9.2 CONSTRAINTS MAPPING ................................................................................................100 9.3 GENERATION OF OPTIONS AND INITIAL SIFTING........................................................100 9.4 GENERAL DESIGN ISSUES..............................................................................................101 9.5 COMPLEMENTARY MEASURES......................................................................................102 9.6 OPTIONS FOR CONSIDERATION....................................................................................102 4 Transport Scotland Forth Replacement Crossing Study 9.7 CORRIDOR SIFTING CONCLUSION................................................................................103 9.8 PROCUREMENT AND FINANCE ......................................................................................103 9.9 LEGISLATIVE ISSUES.......................................................................................................104 9.10 NEXT STEPS......................................................................................................................104 APPENDIX A APPENDIX B APPENDIX C APPENDICES D AND E APPENDIX F 5 Transport Scotland Forth Replacement Crossing Study EXECUTIVE SUMMARY INTRODUCTION The Scottish Executive and Transport Scotland are investing more than £3 billion on transport infrastructure projects to 2012, across all modes of transport. This includes providing funding for local authorities and their partners to improve transport. Scottish Ministers are committed to a Strategic Transport Projects Review (STPR) and Jacobs with Faber Maunsell were commissioned by Transport Scotland to provide technical advice to the study. The STPR commission involves identifying the strengths and weaknesses of the Scottish strategic transport network, identifying gaps between the future demand and capacity of the network, and producing a prioritised list of interventions for the period 2012-22. The commission also covers a study of the Forth Replacement Crossing. The objective of the study